Yealink SIP-T19 Specifications

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This device is compliant with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1.
This device may not cause harmful interference, and
2.
This device must accept any interference received, including interference that may cause undesired
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1.
Reorient or relocate the receiving antenna.
2.
Increase the separation between the equipment and receiver.
3.
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4.
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About This Guide
This guide is intended for administrators who need to properly configure, customize,
manage, and troubleshoot the IP phone system rather than end-users. It provides
details on the functionality and configuration of IP phones.
Many of the features described in this guide involve network settings, which could affect
the IP phone’s performance in the network. So an understanding of IP networking and a
prior knowledge of IP telephony concepts are necessary.
This guide covers SIP-T28P, SIP-T26P, SIP-T22P, SIP-T21P, SIP-T20P and SIP-T19P IP phones. The
following related documents are available:

Quick Installation Guides, which describe how to assemble IP phones.

Quick Reference Guides, which describe the most basic features available on IP
phones.

User Guides, which describe the basic and advanced features available on IP
phones.

Auto Provisioning Guide, which describes how to provision IP phones using the
configuration files.

<y0000000000xx>.cfg and <MAC>.cfg template configuration files.

IP Phones Deployment Guide for BroadSoft UC-One Environments, which describes
how to configure BroadSoft features on the BroadWorks web portal and IP phones.
For support or service, please contact your Yealink reseller or go to Yealink Technical
Support online: http://www.yealink.com/Support.aspx.
The information detailed in this guide is applicable to firmware version 72 or higher. The
firmware format is like x.x.x.x.rom. The second x from left must be greater than or equal
to 72 (e.g., the firmware version of SIP-T28P IP phone: 2.72.0.1.rom). This administrator
guide includes the following chapters:

Chapter 1, “Product Overview” describes the SIP components and SIP IP phones.

Chapter 2, “Getting Started” describes how to install and connect IP phones and
the configuration methods.

Chapter 3, “Configuring Basic Features” describes how to configure the basic
features on IP phones.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones

Chapter 4, “Configuring Advanced Features” describes how to configure the
advanced features on IP phones.

Chapter 5, “Configuring Audio Features” describes how to configure the audio
features on IP phones.

Chapter 6, “Configuring Security Features” describes how to configure the security
features on IP phones.

Chapter 7, “Upgrading Firmware” describes how to upgrade firmware of IP
phones.

Chapter 8, “Resource Files” describes the resource files that can be downloaded
by IP phones.

Chapter 9, “Troubleshooting” describes how to troubleshoot IP phones and
provides some common troubleshooting solutions.

Chapter 10, “Appendix” provides the glossary, reference information about IP
phones compliant with RFC 3261, SIP call flows and the sample configuration files.
This section describes the changes to this guide for each release and guide version.
The following section is new for this version:

Power Indicator LED on page 40
Major updates have occurred to the following sections:
vi

DHCP on page 21

Replace Rule on page 33

Dial-now on page 34

Contrast on page 42

Backlight on page 43

Time and Date on page 50

Key as Send on page 64

Anonymous Call on page 81

LDAP on page 139

Busy Lamp Field on page 142

Action URL on page 163

IPv6 Support on page 196

Transport Layer Security on page 211
About This Guide

Upgrading Firmware on page 225

Resource Files on page 229
Documentations of the newly released SIP-T19P and SIP-T21P IP phones have also been
added.
Major updates have occurred to the following sections:

Action URL on page 163

Action URI on page 166
Major updates have occurred to the following sections:

Logo Customization on page 59

Anonymous Call on page 81

Distinctive Ring Tones on page 131

Server Redundancy on page 169

Transport Layer Security on page 211

Secure Real-Time Transport Protocol on page 217

Encrypting Configuration Files on page 219

Local Contact File on page 233

Viewing Log Files on page 241

Capturing Packets on page 244
Major updates have occurred to the following section:

Appendix B: Time Zones on page 257
Major updates have occurred to the following section:

Configuring DSS Key on page 399
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The following sections are new for this version:

Hot Desking on page 162

TR-069 Device Management on page 194

IPv6 Support on page 196
Major updates have occurred to the following sections:

Configuring Network Parameters Manually on page 24

Softkey Layout on page 61

Directed Call Pickup on page 107

Distinctive Ring Tones on page 131

Automatic Call Distribution on page 149

Action URL on page 166

Server Redundancy on page 169

VLAN on page 179

Transport Layer Security on page 211

Local Contact File on page 233
The following sections are new for this version:
viii

Configuring Network Parameters Manually on page 24

Contrast on page 42

Backlight on page 43

Logo Customization on page 59

Softkey Layout on page 61

Key as Send on page 64

Call Log on page 68

Live Dialpad on page 73

Auto Answer on page 77

Call Completion on page 79

Anonymous Call on page 81

Anonymous Call Rejection on page 82

Busy Tone Delay on page 88
About This Guide

Return Code When Refuse on page 89

Early Media on page 90

180 Ring Workaround on page 90

Use Outbound Proxy in Dialog on page 92

SIP Session Timer on page 93

Session Timer on page 94

Call Return on page 115

Transfer via DTMF on page 125

Intercom on page 126

Music on Hold on page 148

Automatic Call Distribution on page 149

Message Waiting Indicator on page 151

Multicast Paging on page 153

Call Recording on page 158

LLDP on page 176

VLAN on page 179

VPN on page 182

Quality of Service on page 185

Configuring Audio Features on page 199

Secure Real-Time Transport Protocol on page 217

Appendix B: Time Zones on page 257

Phone user interface for each feature
Major updates have occurred to the following sections:

Creating Dial Plan on page 32

Transport Layer Security on page 211

Encrypting Configuration Files on page 219

Troubleshooting on page 241

Web user interface for each feature
The following sections are new for this version:

Dialog Info Call Pickup on page 113

Web Server Type on page 117

Tones on page 135
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones

Hot Desking on page 162

Action URL on page 166

Action URI on page 166

Resource Files on page 229

Appendix C: Configuration Parameters on page 260

Appendix F: Sample Configuration File on page 470
Major updates have occurred to the following sections:
x

Creating Dial Plan on page 32

Phone Lock on page 48

Time and Date on page 50

Busy Lamp Field on page 142
Table of Contents
About This Guide ...................................................................... v
Documentations ............................................................................................................................... v
In This Guide .................................................................................................................................... v
Summary of Changes .................................................................................................................... vi
Changes for Release 72, Guide Version 72.1 ........................................................................ vi
Changes for Release 71, Guide Version 71.165 ................................................................... vii
Changes for Release 71, Guide Version 71.141 ................................................................... vii
Changes for Release 71, Guide Version 71.140 ................................................................... vii
Changes for Release 71, Guide Version 71.125 ................................................................... vii
Changes for Release 71, Guide Version 71.120 ................................................................... vii
Changes for Release 71, Guide Version 71.110 .................................................................. viii
Changes for Release 70, Guide Version 70 ......................................................................... viii
Changes for Release 70, Guide Version 2.0 .......................................................................... ix
Table of Contents .................................................................... xi
Product Overview ..................................................................... 1
VoIP Principle.................................................................................................................................... 1
SIP Components............................................................................................................................... 2
SIP IP Phone Models ........................................................................................................................ 3
Physical Features of IP Phones ................................................................................................ 4
Key Features of IP Phones ...................................................................................................... 10
Getting Started ....................................................................... 13
Connecting the IP Phones ............................................................................................................. 13
Initialization Process Overview .................................................................................................... 16
Verifying Startup ............................................................................................................................ 17
Configuration Methods ................................................................................................................. 18
Phone User Interface.............................................................................................................. 18
Web User Interface ................................................................................................................ 18
Configuration Files.................................................................................................................. 18
Reading Icons ................................................................................................................................ 20
Configuring Basic Network Parameters ...................................................................................... 21
DHCP ....................................................................................................................................... 21
Configuring Network Parameters Manually ........................................................................ 24
PPPoE ....................................................................................................................................... 27
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Configuring Transmission Methods of the Internet Port and PC Port ................................. 28
Configuring PC Port Mode ..................................................................................................... 30
Creating Dial Plan ......................................................................................................................... 32
Replace Rule ........................................................................................................................... 33
Dial-now .................................................................................................................................. 34
Area Code............................................................................................................................... 36
Block Out ................................................................................................................................. 37
Configuring Basic Features .................................................... 39
Power Indicator LED ...................................................................................................................... 40
Contrast .......................................................................................................................................... 42
Backlight ......................................................................................................................................... 43
User Password ............................................................................................................................... 45
Administrator Password ................................................................................................................ 46
Phone Lock ..................................................................................................................................... 48
Time and Date ............................................................................................................................... 50
Language ....................................................................................................................................... 56
Loading Language Packs ...................................................................................................... 57
Specifying the Language to Use........................................................................................... 58
Logo Customization ....................................................................................................................... 59
Softkey Layout................................................................................................................................ 61
Key as Send ................................................................................................................................... 64
Hotline ............................................................................................................................................ 66
Call Log........................................................................................................................................... 68
Missed Call Log ............................................................................................................................. 69
Local Directory ............................................................................................................................... 70
Live Dialpad ................................................................................................................................... 73
Call Waiting .................................................................................................................................... 73
Auto Redial ..................................................................................................................................... 76
Auto Answer ................................................................................................................................... 77
Call Completion ............................................................................................................................. 79
Anonymous Call ............................................................................................................................. 81
Anonymous Call Rejection ............................................................................................................ 82
Do Not Disturb ................................................................................................................................ 84
Busy Tone Delay ............................................................................................................................. 88
Return Code When Refuse ............................................................................................................ 89
Early Media .................................................................................................................................... 90
180 Ring Workaround .................................................................................................................... 90
Use Outbound Proxy in Dialog ..................................................................................................... 92
SIP Session Timer ........................................................................................................................... 93
Session Timer ................................................................................................................................. 94
Call Hold......................................................................................................................................... 96
Call Forward .................................................................................................................................. 98
Call Transfer ................................................................................................................................. 103
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Table of Contents
Network Conference ................................................................................................................... 105
Transfer on Conference Hang Up .............................................................................................. 106
Directed Call Pickup .................................................................................................................... 107
Group Call Pickup........................................................................................................................ 110
Dialog Info Call Pickup ................................................................................................................ 113
Call Return .................................................................................................................................... 115
Call Park ....................................................................................................................................... 116
Web Server Type.......................................................................................................................... 117
Calling Line Identification Presentation ..................................................................................... 119
Connected Line Identification Presentation .............................................................................. 121
DTMF ............................................................................................................................................. 121
Suppress DTMF Display .............................................................................................................. 124
Transfer via DTMF ........................................................................................................................ 125
Intercom........................................................................................................................................ 126
Outgoing Intercom Calls...................................................................................................... 126
Incoming Intercom Calls ...................................................................................................... 128
Configuring Advanced Features...........................................131
Distinctive Ring Tones .................................................................................................................. 131
Tones ............................................................................................................................................. 135
Remote Phone Book .................................................................................................................... 137
LDAP .............................................................................................................................................. 139
Busy Lamp Field ........................................................................................................................... 142
Music on Hold .............................................................................................................................. 148
Automatic Call Distribution ......................................................................................................... 149
Message Waiting Indicator ........................................................................................................ 151
Multicast Paging .......................................................................................................................... 153
Sending RTP Stream ............................................................................................................. 153
Receiving RTP Stream .......................................................................................................... 155
Call Recording ............................................................................................................................. 158
Hot Desking .................................................................................................................................. 162
Action URL .................................................................................................................................... 163
Action URI ..................................................................................................................................... 166
Server Redundancy ..................................................................................................................... 169
SIP Server Domain Name Resolution .................................................................................. 173
LLDP............................................................................................................................................... 176
VLAN ............................................................................................................................................. 179
VPN................................................................................................................................................ 182
Quality of Service ........................................................................................................................ 185
Network Address Translation ..................................................................................................... 187
802.1X Authentication ................................................................................................................. 189
TR-069 Device Management ...................................................................................................... 194
IPv6 Support ................................................................................................................................. 196
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Configuring Audio Features ..................................................199
Headset Prior ............................................................................................................................... 199
Dual Headset ............................................................................................................................... 200
Audio Codecs .............................................................................................................................. 201
Acoustic Clarity Technology ........................................................................................................ 205
Acoustic Echo Cancellation ................................................................................................. 205
Voice Activity Detection ....................................................................................................... 206
Comfort Noise Generation .................................................................................................. 207
Jitter Buffer ............................................................................................................................ 208
Configuring Security Features ...............................................211
Transport Layer Security.............................................................................................................. 211
Secure Real-Time Transport Protocol .......................................................................................... 217
Encrypting Configuration Files ................................................................................................... 219
Upgrading Firmware .............................................................225
Resource Files ........................................................................229
Replace Rule Template ............................................................................................................... 229
Dial-now Template....................................................................................................................... 230
Softkey Layout Template ............................................................................................................. 231
Local Contact File ........................................................................................................................ 233
Remote XML Phone Book ............................................................................................................ 234
Directory Template ...................................................................................................................... 235
Super Search Template............................................................................................................... 237
Specifying the Access URL of Resource Files ............................................................................ 238
Troubleshooting .....................................................................241
Troubleshooting Methods ........................................................................................................... 241
Viewing Log Files .................................................................................................................. 241
Capturing Packets ................................................................................................................ 244
Enabling Watch Dog Feature .............................................................................................. 245
Getting Information from Status Indicators........................................................................ 246
Analyzing Configuration File ............................................................................................... 246
Troubleshooting Solutions ........................................................................................................... 247
Why is the LCD screen blank? ............................................................................................. 247
Why doesn’t the IP phone get an IP address? ................................................................... 247
Why does the IP phone display “No Service”? ................................................................. 248
How do I find the basic information of the IP phone? ....................................................... 248
Why doesn’t the IP phone upgrade firmware successfully? ............................................. 248
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Table of Contents
Why doesn’t the IP phone display time and date correctly? ........................................... 248
Why do I get poor sound quality during a call? ................................................................ 248
What is the difference between a remote phone book and a local phone book? ....... 249
What is the difference among user name, register name and display name? ............. 249
How to reboot the IP phone remotely? .............................................................................. 249
Why does the IP phone use DOB format logo file instead of popular BMP, JPG and so on?
................................................................................................................................................ 250
How to increase or decrease the volume? ........................................................................ 250
What will happen if I connect both PoE cable and power adapter? Which has the higher
priority? .................................................................................................................................. 250
What is auto provisioning? .................................................................................................. 250
What is PnP? .......................................................................................................................... 250
Why doesn’t the IP phone update the configuration? ...................................................... 251
What do “on code” and “off code” mean? ....................................................................... 251
How to solve the IP conflict problem? ................................................................................ 251
How to reset the IP phone to factory configurations? ....................................................... 251
How to restore the administrator password? .................................................................... 252
What are the main differences among SIP-T28P, IP-T26P, SIP-T22P, SIP-T21P, SIP-T20P and
SIP-T19P IP phones? ............................................................................................................... 252
Appendix ...............................................................................255
Appendix A: Glossary ................................................................................................................. 255
Appendix B: Time Zones ............................................................................................................. 257
Appendix C: Configuration Parameters .................................................................................... 260
Setting Parameters in Configuration Files .......................................................................... 260
Basic and Advanced Parameters ....................................................................................... 260
Audio Feature Parameters................................................................................................... 376
Security Feature Parameters ............................................................................................... 384
Upgrading Firmware ........................................................................................................... 389
Resource Files ....................................................................................................................... 392
Troubleshooting .................................................................................................................... 397
Configuring DSS Key ............................................................................................................ 399
Appendix D: SIP (Session Initiation Protocol)............................................................................ 422
RFC and Internet Draft Support .......................................................................................... 422
SIP Request ............................................................................................................................ 425
SIP Header ............................................................................................................................ 426
SIP Responses ....................................................................................................................... 427
SIP Session Description Protocol (SDP) Usage .................................................................. 430
Appendix E: SIP Call Flows ......................................................................................................... 430
Successful Call Setup and Disconnect ............................................................................... 431
Unsuccessful Call Setup—Called User is Busy .................................................................. 433
Unsuccessful Call Setup—Called User Does Not Answer ................................................ 435
Successful Call Setup and Call Hold .................................................................................. 438
Successful Call Setup and Call Waiting ............................................................................. 441
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Call Transfer without Consultation ...................................................................................... 446
Call Transfer with Consultation ............................................................................................ 450
Always Call Forward ............................................................................................................ 455
Busy Call Forward ................................................................................................................ 459
No Answer Call Forward ..................................................................................................... 462
Call Conference .................................................................................................................... 465
Appendix F: Sample Configuration File .................................................................................... 470
Index ......................................................................................477
xvi
Product Overview
This chapter contains the following information about IP phones:

VoIP Principle

SIP Components

SIP IP Phone Models
VoIP
VoIP (Voice over Internet Protocol) is a technology using the Internet Protocol instead of
traditional Public Switch Telephone Network (PSTN) technology for voice
communications.
It is a family of technologies, methodologies, communication protocols, and
transmission techniques for the delivery of voice communications and multimedia
sessions over IP networks. The H.323 and Session Initiation Protocol (SIP) are two
popular VoIP protocols that are found in widespread implementation.
H.323
H.323 is a recommendation from the ITU Telecommunication Standardization Sector
(ITU-T) that defines the protocols to provide audio-visual communication sessions on
any packet network. The H.323 standard addresses call signaling and control,
multimedia transport and control, and bandwidth control for point-to-point and
multi-point conferences.
It is widely implemented by voice and video conference equipment manufacturers, is
used within various Internet real-time applications such as GnuGK and NetMeeting and
is widely deployed by service providers and enterprises for both voice and video
services over IP networks.
SIP
SIP (Session Initiation Protocol) is the Internet Engineering Task Force’s (IETF’s) standard
for multimedia conferencing over IP. It is an ASCII-based, application-layer control
protocol (defined in RFC 3261) that can be used to establish, maintain, and terminate
calls between two or more endpoints. Like other VoIP protocols, SIP is designed to
address functions of signaling and session management within a packet telephony
network. Signaling allows call information to be carried across network boundaries.
Session management provides the ability to control attributes of an end-to-end call.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
SIP provides capabilities to:

Determine the location of the target endpoint -- SIP supports address resolution,
name mapping, and call redirection.

Determine media capabilities of the target endpoint -- Via Session Description
Protocol (SDP), SIP determines the “lowest level” of common services between
endpoints. Conferences are established using only media capabilities that can be
supported by all endpoints.

Determine the availability of the target endpoint -- A call cannot be completed
because the target endpoint is unavailable, SIP determines whether the called
party is already on the IP phone or does not answer in the allotted number of rings.
It then returns a message indicating why the target endpoint is unavailable.

Establish a session between the origin and target endpoint -- The call can be
completed, SIP establishes a session between endpoints. SIP also supports mid-call
changes, such as the addition of another endpoint to the conference or the change
of a media characteristic or codec.

Handle the transfer and termination of calls -- SIP supports the transfer of calls from
one endpoint to another. During a call transfer, SIP simply establishes a session
between the transferee and a new endpoint (specified by the transferring party)
and terminates the session between the transferee and the transferring party. At
the end of a call, SIP terminates the sessions between all parties.
SIP is a peer-to-peer protocol. The peers in a session are called User Agents (UAs). A
user agent can function as one of following roles:

User Agent Client (UAC) -- A client application that initiates the SIP request.

User Agent Server (UAS) -- A server application that contacts the user when a SIP
request is received and that returns a response on behalf of the user.
User Agent Client (UAC)
The UAC is an application that initiates up to six feasible SIP requests to the UAS. The six
requests issued by the UAC are: INVITE, ACK, OPTIONS, BYE, CANCEL and REGISTER.
When the SIP session is being initiated by the UAC SIP component, the UAC determines
the information essential for the request, which is the protocol, the port and the IP
address of the UAS to which the request is being sent. This information can be dynamic
and will make it challenging to put through a firewall. For this reason, it may be
recommended to open the specific application type on the firewall. The UAC is also
capable of using the information in the request URI to establish the course of the SIP
request to its destination, as the request URI always specifies the host which is essential.
The port and protocol are not always specified by the request URI. Thus if the request
does not specify a port or protocol, a default port or protocol is contacted. It may be
2
Product Overview
preferential to use this method when not using an application layer firewall. Application
layer firewalls like to know what applications are flowing though which ports and it is
possible to use content types of other applications other than the one you are trying to
let through what has been denied.
User agent server (UAS)
UAS is a server that hosts the application responsible for receiving the SIP requests from
a UAC, and on reception it returns a response to the request back to the UAC. The UAS
may issue multiple responses to the UAC, not necessarily a single response.
Communication between UAC and UAS is client/server and peer-to–peer.
Typically, a SIP endpoint is capable of functioning as both a UAC and a UAS, but it
functions only as one or the other per transaction. Whether the endpoint functions as a
UAC or a UAS depends on the UA that initiates the request.
This section introduces SIP IP phone models. IP phones are endpoints in the overall
network topology, which are designed to interoperate with other compatible
equipments including application servers, media servers, internet-working gateways,
voice bridges, and other endpoints. IP phones are characterized by a large number of
functions, which simplify business communication with a high standard of security and
can work seamlessly with a large number of SIP PBXs.
IP phones provide a powerful and flexible IP communication solution for Ethernet TCP/IP
networks, delivering excellent voice quality. The high-resolution graphic display
supplies content in multiple languages for system status, call log and directory access.
IP phones also support advanced functionalities, including LDAP, Busy Lamp Field, Sever
Redundancy and Network Conference.
The following IP phone models are described:

SIP-T28P

SIP-T26P

SIP-T22P

SIP-T21P

SIP-T20P

SIP-T19P
IP phones comply with the SIP standard (RFC 3261), and they can only be used within a
network that supports this model of phone.
In order to operate as SIP endpoints in your network successfully, IP phones must meet
the following requirements:

A working IP network is established.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones

Routers are configured for VoIP.

VoIP gateways are configured for SIP.

The latest (or compatible) firmware of IP phones is available.

A call server is active and configured to receive and send SIP messages.
This section lists the available physical features of IP phones.
SIP-T28P
Physical Features:
4
-
TI TITAN chipset and TI voice engine
-
320x160 graphic LCD with 4-level grayscales
-
6 VoIP accounts, BroadSoft/Avaya/Asterisk validated
-
HD Voice: HD Codec, HD Handset, HD Speaker
-
48 keys including 16 DSS keys
-
1xRJ9 (4P4C) handset port
-
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
-
1XRJ12 (6P6C) expansion module port
-
19 LEDs: 1xpower, 6xline, 1xmessage, 1xheadset, 10xmemory
-
Power adapter: AC 100~240V input and DC 5V/1.2A output
-
Power over Ethernet (IEEE 802.3af)
Product Overview
SIP-T26P
Physical Features:
-
TI TITAN chipset and TI voice engine
-
132x64 graphic LCD
-
3 VoIP accounts, BroadSoft/Avaya/Asterisk validated
-
HD Voice: HD Codec, HD Handset, HD Speaker
-
45 keys including 13 DSS keys
-
1xRJ9 (4P4C) handset port
-
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
-
1XRJ12 (6P6C) expansion module port
-
16 LEDs: 1xpower, 3xline, 1xmessage, 1xheadset, 10xmemory
-
Power adapter: AC 100~240V input and DC 5V/1.2A output
-
Power over Ethernet (IEEE 802.3af)
5
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
SIP-T22P
Physical Features:
6
-
TI TITAN chipset and TI voice engine
-
132x64 graphic LCD
-
3 VoIP accounts, BroadSoft/Avaya/Asterisk validated
-
HD Voice: HD Codec, HD Handset, HD Speaker
-
32 keys including 4 soft keys
-
1xRJ9 (4P4C) handset port
-
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
-
5 LEDs: 1xpower, 3xline, 1xmessage
-
Power adapter: AC 100~240V input and DC 5V/1.2A output
-
Power over Ethernet (IEEE 802.3af)
-
Wall Mount
Product Overview
SIP-T21P
Physical Features:
-
132x64 graphic LCD
-
2 VoIP accounts
-
31 keys including 4 soft keys
-
4 LEDs: 1xpower, 2xline, 1xmessage
-
HD Voice: HD Codec, HD Handset, HD Speaker
-
1xRJ9 (4P4C) handset port
-
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
-
Power adapter: AC 100~240V input and DC 5V/600mA output
-
Power over Ethernet (IEEE 802.3af)
-
Wall Mount
7
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
SIP-T20P
Physical Features:
8
-
TI TITAN chipset and TI voice engine
-
3-line LCD consists of an icon line and two 15-character lines
-
2 VoIP accounts, BroadSoft/Avaya/Asterisk validated
-
HD Voice: HD Codec, HD Handset, HD Speaker
-
31 keys including 9 function keys
-
1xRJ9 (4P4C) handset port
-
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
-
4 LEDs: 1xpower, 2xline, 1xmessage
-
Power adapter: AC 100~240V input and DC 5V/1.2A output
-
Power over Ethernet (IEEE 802.3af)
-
Wall Mount
Product Overview
SIP-T19P
Physical Features:
-
132x64 graphic LCD
-
Single VoIP account
-
29 keys including 4 soft keys
-
1xRJ9 (4P4C) handset port
-
1xRJ9 (4P4C) headset port
-
2xRJ45 10/100Mbps Ethernet ports
-
1 LED: 1xpower
-
Power adapter: AC 100~240V input and DC 5V/600mA output
-
Power over Ethernet (IEEE 802.3af)
-
Wall Mount
9
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
In addition to physical features introduced above, IP phones also support the following
key features when running the latest firmware:

Phone Features
-
Call Options: emergency call, call waiting, call hold, call mute, call forward,
call transfer, call pickup, conference.
-
Basic Features: DND, phone lock, auto redial, live dialpad, dial plan, hotline,
caller identity, auto answer.
-
Advanced Features: BLF, server redundancy, distinctive ring tones, remote
phone book (not applicable to SIP-T20P IP phones), LDAP (not applicable to
SIP-T19P and SIP-T20P IP phones), 802.1X authentication.


Codecs and Voice Features
-
Wideband codec: G.722
-
Narrowband codec: G.711, G.723, G.726, G.729AB, iLBC
-
VAD, CNG, AEC, PLC, AJB, AGC
-
Full-duplex speakerphone with AEC
Network Features
-
SIP v1 (RFC2543), v2 (RFC3261)
-
NAT Traversal: STUN mode
-
DTMF: INBAND, RFC2833, SIP INFO
-
Proxy mode and peer-to-peer SIP link mode
-
IP assignment: Static/DHCP/PPPoE
-
VLAN assignment: LLDP/Static/DHCP
-
Bridge/Router mode for PC port (Router mode is not applicable to SIP-T19P and
SIP-T21P IP phones)

10
-
TFTP/DHCP/PPPoE client
-
HTTP/HTTPS server
-
DNS client
-
NAT/DHCP server
-
IPv6 support
Management
-
FTP/TFTP/HTTP/PnP auto-provision
-
Configuration: browser/phone/auto-provision
-
Direct IP call without SIP proxy
-
Dial number via SIP server
Product Overview

-
Dial URL via SIP server
-
TR-069
Security
-
HTTPS (server/client)
-
SRTP (RFC3711)
-
Transport Layer Security (TLS)
-
VLAN (802.1q), QoS
-
Digest authentication using MD5/MD5-sess
-
Secure configuration file via AES encryption
-
Phone lock for personal privacy protection
-
Admin/User configuration mode
11
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
12
Getting Started
This chapter provides basic information and installation instructions of IP phones.
This chapter provides the following sections:

Connecting the IP Phones

Initialization Process Overview

Verifying Startup

Configuration Methods

Reading Icons

Configuring Basic Network Parameters

Creating Dial Plan
This section introduces how to install IP phones with components in packaging contents.
Note
1.
Attach the stand
2.
Connect the handset and optional headset
3.
Connect the network and power
A headset is not included in packaging contents.
13
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
1)
Attach the stand:
SIP-T28P/T26P
SIP-T22P/T21P/T20P
SIP-T19P
14
Getting Started
2)
Connect the handset and optional headset:
SIP-T28P/T26P
SIP-T22P/T21P/T20P/T19P
3)
Connect the network and power:

AC power

Power over Ethernet (PoE)
AC Power
To connect the AC power and network:
1.
Connect the DC plug of the power adapter to the DC5V port on the IP phone and
connect the other end of the power adapter into an electrical power outlet.
2.
Connect the included or a standard Ethernet cable between the Internet port on
the IP phone and the one on the wall or switch/hub device port.
15
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Power over Ethernet
With the included or a regular Ethernet cable, IP phones can be powered from a
PoE-compliant switch or hub.
To connect the PoE:
1.
Connect the Ethernet cable between the Internet port on the IP phone and an
available port on the in-line power switch/hub.
Note
If in-line power switch/hub is provided, you don’t need to connect the phone to the power
adapter. Make sure the switch/hub is PoE-compliant.
The IP phone can also share the network with another network device such as a PC
(personal computer). It is an optional connection.
Important! Do not unplug or remove the power while the IP phone is updating firmware
and configurations.
The initialization process of the IP phone is responsible for network connectivity and
operation of the IP phone in your local network.
Once you connect your IP phone to the network and to an electrical supply, the IP phone
begins its initialization process.
During the initialization process, the following events take place:
Loading the ROM file
The ROM file resides in the flash memory of the IP phone. The IP phone comes from the
factory with a ROM file preloaded. During initialization, the IP phone runs a bootstrap
loader that loads and executes the ROM file.
Configuring the VLAN
If the IP phone is connected to a switch, the switch notifies the IP phone of the VLAN
information defined on the switch (if using LLDP). The IP phone can then proceed with
the DHCP request for its network settings (if using DHCP).
16
Getting Started
Querying the DHCP (Dynamic Host Configuration Protocol) Server
The IP phone is capable of querying a DHCP server. DHCP is enabled on the IP phone
by default. The following network parameters can be obtained from the DHCP server
during initialization:

IP Address

Subnet Mask

Gateway

Primary DNS (Domain Name Server)

Secondary DNS
You need to configure network parameters of the IP phone manually if any of them is not
supplied by the DHCP server. For more information on configuring network parameters
manually, refer to Configuring Network Parameters Manually on page 24.
Contacting the provisioning server
If the IP phone is configured to obtain configurations from the provisioning server, it will
connect to the provisioning server and download the configuration file(s) during startup.
The IP phone will be able to resolve and update configurations written in the
configuration file(s). If the IP phone does not obtain configurations from the provisioning
server, the IP phone will use configurations stored in the flash memory.
Updating firmware
If the access URL of firmware is defined in the configuration file, the IP phone will
download firmware from the provisioning server. If the MD5 value of the downloaded
firmware file differs from that of the image stored in the flash memory, the IP phone will
perform a firmware update.
Downloading the resource files
In addition to configuration file(s), the IP phone may require resource files before it can
deliver service. These resource files are optional, but if some particular features are
being deployed, these files are required.
The followings show examples of resource files:

Language packs

Ring tones

Contact files
After connected to the power and network, the IP phone begins the initializing process
by cycling through the following steps:
1.
The power indicator LED illuminates.
17
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2.
The message “Initializing, Please Wait” appears on the LCD screen when the IP
phone starts up.
3.
4.
The main LCD screen displays the following:

Time and date

Soft key labels (not applicable to SIP-T20P IP phones)
Press the OK key to check the IP phone status, the LCD screen displays the valid IP
address, MAC address, firmware version, etc.
If the IP phone has successfully passed through these steps, it starts up properly and is
ready for use.
You can use the following methods to set up and configure IP phones:

Phone User Interface

Web User Interface

Configuration Files
The following sections describe how to configure IP phones using each method above.
An administrator or a user can configure and use IP phones via phone user interface.
Access to specific features is restricted to the administrator. The default password is
“admin“(case-sensitive). Not all features are available on phone user interface.
An administrator or a user can configure IP phones via web user interface. The default
user name and password for the administrator to log into the web user interface are
both “admin” (case-sensitive). Almost all features are available on web user interface.
IP phones support both HTTP and HTTPS protocols for accessing the web user interface.
For more information, refer to Web Server Type on page 117.
You can deploy IP phones using configuration files. There are two configuration files
both of which are CFG formatted. We call them Common CFG file and MAC-Oriented
CFG file. A Common CFG file will be effectual for all IP phones of the same model.
However, a MAC-Oriented CFG file will only be effectual for a specific IP phone. The
Common CFG file has a fixed name for each IP phone model, while the MAC-Oriented
18
Getting Started
CFG file is named after the MAC address of the IP phone. For example, if the MAC
address of a SIP-T22P IP phone is 001565113af8, names of these two configuration files
must be: y000000000005.cfg and 001565113af8.cfg.
The name of the Common CFG file for each IP phone model is:

SIP-T28P: y000000000000.cfg

SIP-T26P: y000000000004.cfg

SIP-T22P: y000000000005.cfg

SIP-T21P: y000000000034.cfg

SIP-T20P: y000000000007.cfg

SIP-T19P: y000000000031.cfg
In order to deploy IP phones using the configuration files (<y0000000000xx>.cfg and
<MAC>.cfg), you need to use a text-based editing application to edit configuration
files, and store configuration files to a provisioning server. IP phones support
downloading configuration files using any of the following protocols: FTP, TFTP, HTTP and
HTTPS.
IP phones can obtain the address of the provisioning server during startup through one
of the following processes: Zero Touch, PnP, DHCP Options and Phone Flash. Then IP
phones download configuration files from the provisioning server, resolve and update
the configurations written in configuration files. This entire process is called auto
provisioning. For more information on auto provisioning, refer to Yealink_SIP-T2
Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide.
When modifying parameters, learn the following:

Parameters in configuration files override those stored in the IP phone’s flash
memory.

The .cfg extension of configuration files must be in lowercase.

Each line in a configuration file must use the following format and adhere to the
following rules:
variable-name = value
-
Associate only one value with one variable.
-
Separate variable name and value with equal sign.
-
Set only one variable per line.
-
Put the variable and value on the same line, and do not break the line.
-
Comment the variable on a separated line. Use the pound (#) delimiter to
distinguish the comments.
IP phones can accept two sources of configuration data:

Downloaded from configuration files

Changed on the phone user interface or the web user interface
19
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The latest values configured on the IP phone take effect finally.
Icons associated with different features may appear on the LCD screen. The following
table provides a description for each icon on IP phones.
SIP-T28P
SIP-T26P
SIP-T22P
SIP-T21P
SIP-T20P
SIP-T19P
Description
Network is
unavailable
/
/
/
Registered
successfully
Registration
failed
Registering
Hands-free
speakerphone
mode
Handset mode
Headset mode
Voice Mail
/
Text Message
Auto Answer
Do Not Disturb
Call
Forward/Forwar
ded Calls
/
Call Hold
Call Mute
20
Getting Started
SIP-T28P
SIP-T26P
SIP-T22P
SIP-T21P
SIP-T20P
SIP-T19P
Description
Ringer volume is
/
0
Phone Lock
Received Calls
Placed Calls
Missed Calls
/
/
/
/
/
/
Recording box is
full
A call cannot be
recorded
Recording starts
successfully
Recording
/
/
cannot be
started
Recording
/
/
cannot be
stopped
This section describes how to configure basic network parameters for the IP phone.
Note
This section mainly introduces IPv4 network parameters. IP phones also support IPv6. For
more information on IPv6, refer to IPv6 Support on page 196.
DHCP (Dynamic Host Configuration Protocol) is a network protocol used to dynamically
allocate network parameters to network hosts. The automatic allocation of network
parameters to hosts eases the administrative burden of maintaining an IP network. IP
phones comply with the DHCP specifications documented in RFC 2131. If using DHCP, IP
phones connected to the network become operational without having to be manually
assigned IP addresses and additional network parameters. Static DNS address(es) can
21
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
be configured and used when DHCP is enabled.
DHCP Option
DHCP provides a framework for passing information to TCP/IP network devices. Network
and other control information are carried in tagged data items that are stored in the
options field of the DHCP message. The data items themselves are also called options.
DHCP can be initiated by simply connecting the IP phone with the network. IP phones
broadcast DISCOVER messages to request the network information carried in DHCP
options, and the DHCP server responds with specific values in corresponding options.
The following table lists common DHCP options supported by IP phones.
Parameter
Subnet Mask
DHCP Option
1
Description
Specify the client’s subnet mask.
Specify the offset of the client's subnet in
Time Offset
2
seconds from Coordinated Universal Time
(UTC).
Router
3
Time Server
4
Domain Name
Server
6
Log Server
7
Host Name
12
Domain Server
15
Broadcast
Address
28
Network Time
Protocol
42
Servers
Vendor-Specific
Information
Vendor Class
Identifier
TFTP Server
22
Specify a list of IP addresses for routers on the
client’s subnet.
Specify a list of time servers available to the
client.
Specify a list of domain name servers
available to the client.
Specify a list of MIT-LCS UDP servers
available to the client.
Specify the name of the client.
Specify the domain name that client should
use when resolving hostnames via DNS.
Specify the broadcast address in use on the
client's subnet.
Specify a list of NTP servers available to the
client by IP address.
43
Identify the vendor-specific information.
60
Identify the vendor type.
66
Identify a TFTP server when the 'sname' field
in the DHCP header has been used for DHCP
Getting Started
Parameter
DHCP Option
Name
Description
options.
Identify a boot file when the 'file' field in the
Boot file Name
67
DHCP header has been used for DHCP
options.
Procedure
DHCP can be configured using the configuration files or locally.
Configure DHCP on the IP phone.
Configure static DNS address
Configuration File
<y0000000000xx>.cfg
when DHCP is used.
For more information, refer to
DHCP on page 260.
Configure DHCP on the IP phone.
Configure static DNS address
Web User Interface
Local
when DHCP is used.
Navigate to:
http://<phoneIPAddress>/servlet
?p=network&q=load
Phone User Interface
Configure DHCP on the IP phone.
To configure DHCP via web user interface:
1.
Click on Network->Basic.
2.
In the IPv4 Config block, mark the DHCP radio box.
23
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
3.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
4.
Click OK to reboot the IP phone.
To configure static DNS address when DHCP is used via web user interface:
1.
Click on Network->Basic.
2.
In the IPv4 Config block, mark the DHCP radio box.
3.
Mark the Static DNS radio box.
4.
Enter the desired values in the Primary DNS and Secondary DNS fields.
5.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
6.
Click OK to reboot the IP phone.
To configure DHCP via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port->IPv4.
2.
Press
or
to highlight the DHCP IP Client field.
3.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
If DHCP is disabled or IP phones cannot obtain network parameters from the DHCP
server, you need to configure them manually. The following parameters should be
configured for IP phones to establish network connectivity:
24

IP Address

Subnet Mask
Getting Started

Default Gateway

Primary DNS

Secondary DNS
Procedure
Network parameters can be configured manually using the configuration files or
locally.
Configure network parameters of
the IP phone manually.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Static Network Settings on page
261.
Configure network parameters of
the IP phone manually.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=network&q=load
Phone User Interface
Configure network parameters of
the IP phone manually.
To configure the IP address mode via web user interface:
1.
Click on Network->Basic.
2.
Select desired value from the pull-down list of Mode (IPv4/IPv6).
3.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
4.
Click OK to reboot the IP phone.
25
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To configure a static IPv4 address via web user interface:
1.
Click on Network->Basic.
2.
In the IPv4 Config block, mark the Static IP Address radio box.
3.
Enter the desired values in the IP Address, Subnet Mask, Gateway, Primary DNS
and Secondary DNS fields.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
5.
Click OK to reboot the IP phone.
To configure the IP address mode via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port.
2.
Press
or
to select IPv4, IPv6 or IPv4&IPv6 from the IP Mode field.
3.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
To configure a static IPv4 address via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port->IPv4->Static IP Client.
2.
Enter the desired values in the IPv4, Subnet Mask, Default Gateway, Pri DNS and
Sec DNS fields.
3.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
Note
26
Using the wrong network parameters may result in inaccessibility of your phone and may
also have an impact on your network performance. For more information on these
parameters, contact your network administrator.
Getting Started
PPPoE (Point-to-Point Protocol over Ethernet) is a network protocol used by Internet
Service Providers (ISPs) to provide Digital Subscriber Line (DSL) high speed Internet
services. PPPoE allows an office or building-full of users to share a common DSL
connection to the Internet. PPPoE connection is supported by the IP phone Internet port.
Contact your ISP for the PPPoE user name and password.
Procedure
PPPoE can be configured using the configuration files or locally.
Configure PPPoE on the IP phone.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
PPPoE on page 264.
Configure PPPoE on the IP phone.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=network&q=load
Phone User Interface
Configure PPPoE on the IP phone.
To configure PPPoE via web user interface:
1.
Click on Network->Basic.
2.
In the IPv4 Config block, mark the PPPoE radio box.
3.
Enter the user name and password in corresponding fields.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
27
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
5.
Click OK to reboot the IP phone.
To configure PPPoE via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port->IPv4->PPPoE IP Client.
2.
Enter the user name and password in corresponding fields.
3.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
Two Ethernet ports on the back of the IP phone: Internet port and PC port. Three optional
methods of transmission configuration for IP phone Internet or PC Ethernet ports:

Auto-negotiation

Half-duplex

Full-duplex
Auto-negotiation is configured for both Internet and PC ports on the IP phone by default.
Auto-negotiation
Auto-negotiation means that two connected devices choose common transmission
parameters (e.g., speed and duplex mode) to transmit voice or data over Ethernet. This
process entails devices first sharing transmission capabilities and then selecting the
highest performance transmission mode supported by both. You can configure the
Internet port and PC port on the IP phone to automatically negotiate during the
transmission.
28
Getting Started
Half-duplex
Half-duplex transmission refers to transmitting voice or data in both directions, but in
one direction at a time; this means one device can send data on the line, but not
receive data simultaneously. You can configure the half-duplex transmission on both
Internet port and PC port for the IP phone to transmit in 10Mbps or 100Mbps.
Full-duplex
Full-duplex transmission refers to transmitting voice or data in both directions at the
same time; this means one device can send data on the line while receiving data. You
can configure the full-duplex transmission on both Internet port and PC port for the IP
phone to transmit in 10Mbps or 100Mbps.
Procedure
The transmission methods of Ethernet ports can be configured using the configuration
files or locally.
Configure the transmission
methods of Ethernet ports.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Internet and PC Ports
Transmission Methods on page
265.
29
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Configure the transmission
methods of Ethernet ports.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=network-adv&q=load
To configure the transmission methods of Ethernet ports via web user interface:
1.
Click on Network->Advanced.
2.
Select the desired value from the pull-down list of WAN Port Link.
3.
Select the desired value from the pull-down list of PC Port Link.
4.
Click Confirm to accept the change.
The PC port on the back of the IP phone is used to connect a PC, which can be
configured in one of two modes:

Bridge: The IP phone functions as a bridge, and the connected PC appears on the
network as a stand-alone device with its own IP address.

Router: The IP phone functions as a router, and provides a DHCP service for the
connected PC.
Note
30
The router mode is not applicable to SIP-T19P and SIP-T21P IP phones.
Getting Started
Procedure
PC port mode can be configured using the configuration files or locally.
Configure the PC port mode.
Configuration File
<y0000000000xx>.cfg
For more information, refer to PC
Port Mode on page 266.
Configure the PC port mode.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=network-pcport&q=load
Phone User Interface
Configure the PC port mode.
To configure the PC port mode via web user interface:
1.
Click on Network->PC Port.
2.
Select the desired value from the pull-down list of PC Port Active.
3.
Mark the desired radio box.
If you mark the As Router radio box, you can configure the IP address for the PC port
and configure DHCP for the PC attached to the PC port.
1) Enter the IP address in the IP Address field.
2) Enter subnet mask in the Subnet Mask field.
3) Select the desired value from the pull-down list of Enable DHCP Server.
4) Enter the start IP address in the Start IP Address field.
5) Enter the end IP address in the End IP Address field.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
5.
Click OK to reboot the IP phone.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To configure the PC port mode via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->PC
Port.
2.
Select the desired mode.
If you select Router, you can configure the IP address for the PC port and configure
DHCP for the PC attached to the PC port.
1) Enter the IP address in the IPv4 field.
2) Enter the subnet mask in the Subnet Mask field.
3) Press
or
to highlight the DHCP Server field, and then press the Enter soft
key.
4) Select the desired value from the Server Status field.
5) Enter the start IP address in the Start IP field.
6) Enter the end IP address in the End IP field.
3.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
Regular expression, often called a pattern, is an expression that specifies a set of strings.
A regular expression provides a concise and flexible means to “match” (specify and
recognize) strings of text, such as particular characters, words, or patterns of characters.
Regular expression is used by many text editors, utilities, and programming languages
to search and manipulate text based on patterns.
Regular expression can be used to define IP phone dial plan. Dial plan is a string of
characters that governs the way for IP phones to process the inputs received from the IP
phone’s keypads. IP phones support the following dial plan features:

Replace Rule

Dial-now

Area Code

Block Out
You need to know the following basic regular expression syntax when creating dial
plan:
The dot “.” can be used as a placeholder or multiple placeholders for
.
any string. Example:
“12.” would match “123”, “1234”, “12345”, “12abc”, etc.
x
32
The “x” can be used as a placeholder for any character. Example:
“12x” would match “121”, “122”, “123”, “12a”, etc.
Getting Started
The dash “-” can be used to match a range of characters within the
-
brackets. Example:
“[5-7]” would match the number “5”, ”6” or ”7”.
The comma “,” can be used as a separator within the bracket.
,
Example:
“[2,5,8]” would match the number ”2”, “5” or “8”.
The square bracket "[]" can be used as a placeholder for a single
[]
character which matches any of a set of characters. Example:
"91[5-7]1234"would match “9151234”, “9161234”, “9171234”.
The parenthesis "( )" can be used to group together patterns, for
()
instance, to logically combine two or more patterns. Example:
"([1-9])([2-7])3" would match “923”, “153”, “673”, etc.
The “$” followed by the sequence number of a parenthesis means
the characters placed in the parenthesis. The sequence number
stands for the corresponding parenthesis. Example:
$
A replace rule configuration, Prefix: "001(xxx)45(xx)", Replace:
"9001$145$2". When you dial out "0012354599" on your phone, the IP
phone will replace the number with "90012354599". “$1” means 3
digits in the first parenthesis, that is, “235”. “$2” means 2 digits in the
second parenthesis, that is, “99”.
Replace rule is an alternative string that replaces the numbers entered by the user. IP
phones support up to 100 replace rules, which can be created either one by one or in
batch using a replace rule template. For more information on the replace rule template,
refer to Replace Rule Template on page 229.
Procedure
Replace rule can be created using the configuration files or locally.
Create the replace rule for the IP
Configuration File
<y0000000000xx>.cfg
phone.
For more information, refer to Dial
Plan on page 269.
Create the replace rule for the IP
phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=settings-dialplan&q=load
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To create a replace rule via web user interface:
1.
Click on Settings->Dial Plan->Replace Rule.
2.
Enter the string in the Prefix field.
3.
Enter the string in the Replace field.
4.
Enter the desired line ID in the Account field or leave it blank.
If you leave this field blank or enter 0, the replace rule will apply to all accounts on
the IP phone.
5.
Click Add to add the replace rule.
Dial-now is a string used to match numbers entered by the user. When entered numbers
match the predefined dial-now rule, the IP phone will automatically dial out the
numbers without pressing the send key. IP phones support up to 100 dial-now rules,
which can be created either one by one or in batch using a dial-now rule template. For
more information on the dial-now template, refer to Dial-now Template on page 230.
Delay Time for Dial-now Rule
The IP phone will automatically dial out the entered number, which matches the
dial-now rule, after a specified period of time.
Procedure
Dial-now rule can be created using the configuration files or locally.
Create the dial-now rule for the IP
Configuration File
<y0000000000xx>.cfg
phone.
Configure the delay time for the
34
Getting Started
dial-now rule.
For more information, refer to Dial
Plan on page 269.
Create the dial-now rule for the IP
phone.
Navigate to:
http://<phoneIPAddress>/servlet
Local
Web User Interface
?p=settings-dialnow&q=load
Configure the delay time for the
dial-now rule.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To create a dial-now rule via web user interface:
1.
Click on Settings->Dial Plan->Dial-now.
2.
Enter the desired value in the Rule field.
3.
Enter the desired line ID in the Account field or leave it blank.
If you leave this field blank or enter 0, the dial-now rule will apply to all accounts on
the IP phone.
4.
Click Add to add the dial-now rule.
To configure the delay time for the dial-now rule via web user interface:
1.
Click on Features->General Information.
35
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2.
Enter the desired time within 1-14 (in seconds) in the Time-Out for Dial-Now Rule
field.
3.
Click Confirm to accept the change.
Area codes are also known as Numbering Plan Areas (NPAs). They usually indicate
geographical areas in one country. When entered numbers match the predefined area
code rule, the IP phone will automatically add the area code before the numbers when
dialing out them. IP phones only support one area code rule.
Procedure
Area code rule can be configured using the configuration files or locally.
Create the area code rule and
specify the maximum and
Configuration File
<y0000000000xx>.cfg
minimum lengths of entered
numbers.
For more information, refer to Dial
Plan on page 269.
Create the area code rule and
specify the maximum and
Local
Web User Interface
minimum lengths of entered
numbers.
Navigate to:
http://<phoneIPAddress>/servlet
36
Getting Started
?p=settings-areacode&q=load
To configure an area code rule via web user interface:
1.
Click on Settings->Dial Plan->Area Code.
2.
Enter the desired values in the Code, Min Length (1-15) and Max Length (1-15)
fields.
3.
Enter the desired line ID in the Account field or leave it blank.
If you leave this field blank or enter 0, the area code rule will apply to all accounts
on the IP phone.
4.
Click Confirm to accept the change.
Block out rule prevents users from dialing out specific numbers. When entered numbers
match the predefined block out rule, the LCD screen prompts “Forbidden Number”. IP
phones support up to 10 block out rules.
Procedure
Block out rule can be created using the configuration files or locally.
Create the block out rule for the
Configuration File
<y0000000000xx>.cfg
IP phone.
For more information, refer to Dial
Plan on page 269.
Create the block out rule for the
Local
Web User Interface
desired line.
Navigate to:
http://<phoneIPAddress>/servlet
37
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
?p=settings-blackout&q=load
To create a block out rule via web user interface:
1.
Click on Settings->Dial Plan->Block Out.
2.
Enter the desired value in the BlockOut Number field.
3.
Enter the desired line ID in the Account field or leave it blank.
If you leave this field blank or enter 0, the block out rule will apply to all accounts on
the IP phone.
4.
38
Click Confirm to add the block out rule.
Configuring Basic Features
This chapter provides information for making configuration changes for the following
basic features:

Power Indicator LED

Contrast

Backlight

User Password

Administrator Password

Phone Lock

Time and Date

Language

Logo Customization

Softkey Layout

Key as Send

Hotline

Call Log

Missed Call Log

Local Directory

Live Dialpad

Call Waiting

Auto Redial

Auto Answer

Call Completion

Anonymous Call

Anonymous Call Rejection

Do Not Disturb

Busy Tone Delay

Return Code When Refuse

Early Media

180 Ring Workaround

Use Outbound Proxy in Dialog

SIP Session Timer
39
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones

Session Timer

Call Hold

Call Forward

Call Transfer

Network Conference

Transfer on Conference Hang Up

Directed Call Pickup

Group Call Pickup

Dialog Info Call Pickup

Call Return

Call Park

Web Server Type

Calling Line Identification Presentation

Connected Line Identification Presentation

DTMF

Suppress DTMF Display

Transfer via DTMF

Intercom
Power indicator LED indicates power status and phone status. There are six
configuration options for power indicator LED:
Common Power Light On
Common Power Light On allows the power indicator LED to be turned on.
Ring Power Light Flash
Ring Power Light Flash allows the power indicator LED to flash when the IP phone
receives an incoming call. If this option is disabled, the status of the power indicator LED
is determined by the option “Common Power Light On”.
Voice/Text Mail Power Light Flash
Voice/Text Mail Power Light Flash allows the power indicator LED to flash when the IP
phone receives a voice mail or a text message. If this option is disabled, the status of
the power indicator LED is determined by the option “Common Power Light On”.
Mute Power Light Flash
Mute Power Light Flash allows the power indicator LED to flash when a call is mute. If
40
Configuring Basic Features
this option is disabled, the status of the power indicator LED is determined by the option
“Common Power Light On”.
Hold/Held Power Light Flash
Hold/Held Power Light Flash allows the power indicator LED to flash when a call is
placed on hold or is held. If this option is disabled, the status of the power indicator LED
is determined by the option “Common Power Light On”.
Talk/Dial Power Light On
Talk/Dial Power Light On allows the power indicator LED to be turned on when the IP
phone is busy. If this option is disabled, the status of the power indicator LED is
determined by the option “Common Power Light On”.
Procedure
Power indicator LED can be configured using the configuration files or locally.
Configure the power indicator
Configuration File
<y0000000000xx>.cfg
LED.
For more information, refer to
Power Indicator LED on page 273.
Configure the power indicator
LED.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-powerled&q=load
To configure the power Indicator LED via web user interface:
1.
Click on Features->Power LED.
2.
Select the desired value from the pull-down list of Common Power Light On.
3.
Select the desired value from the pull-down list of Ring Power Light Flash
4.
Select the desired value from the pull-down list of Voice/Text Mail Power Light Flash.
5.
Select the desired value from the pull-down list of Mute Power Light Flash.
6.
Select the desired value from the pull-down list of Hold/Held Power Light Flash.
41
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
7.
Select the desired value from the pull-down list of Talk/Dial Power Light On.
8.
Click Confirm to accept the change.
Contrast determines the readability of the texts displayed on the LCD screen. Adjusting
the contrast to a comfortable level can optimize the screen viewing experience. When
configured properly, contrast allows users to read the LCD’s display with minimal
eyestrain. The contrast of the LCD screen is only applicable to SIP-T19P, SIP-T21P and
SIP-T28P IP phones, and EXP39 connected to SIP-T26P and SIP-T28P IP phones.
Procedure
Contrast can be configured using the configuration files or locally.
Configure the contrast of the LCD
Configuration File
<y0000000000xx>.cfg
screen.
For more information, refer to
Contrast on page 276.
Configure the contrast of the LCD
screen.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=settings-preference&q=load
Phone User Interface
To configure contrast via web user interface:
1.
42
Click on Settings->Preference.
Configure the contrast of the LCD
screen.
Configuring Basic Features
2.
Select the desired value from the pull-down list of Contrast.
3.
Click Confirm to accept the change.
To configure contrast via phone user interface (applicable to SIP-T28P IP phones and
EXP39 connected to SIP-T26P and SIP-T28P IP phones):
1.
Press Menu->Settings->Basic Settings->Display->Contrast.
2.
Press
or
, or the Switch soft key to increase or decrease the intensity of
contrast.
The default contrast level is 6.
3.
Note
Press the Save soft key to accept the change.
Before you adjust the LCD’s contrast of the expansion module, make sure the expansion
module has been connected to the IP phone.
To configure contrast via phone user interface (applicable to SIP-T19P and SIP-T21P IP
phones):
1.
Press Menu->Settings->Basic Setting->Contrast.
2.
Press
or
, or the Switch soft key to increase or decrease the intensity of
contrast.
The default contrast level is 6.
3.
Press the Save soft key to accept the change.
Backlight determines the brightness of the LCD screen display, allowing users to read
easily in dark environments. Backlight time specifies the delay time to turn off the
backlight when the IP phone is inactive. Backlight time is applicable to SIP-T22P, SIP-T26P
and SIP-T28P IP phones, and EXP39 connected to SIP-T26P and SIP-T28P IP phones.
Backlight turns off quickly if a short backlight time is configured, this may not give users
43
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
enough time to read messages. Backlight active level is used to adjust the backlight
intensity of the LCD screen. Backlight active level is only applicable to SIP-T28P IP phones
and the connected EXP39.
You can configure the backlight time as one of the following types:

Always Off: Backlight is turned off permanently.

Always On: Backlight is turned on permanently.

15, 30, 60, 120, 300, 600 or 1800: Backlight is turned off when the IP phone is inactive
after a preset period of time (in seconds), but it is automatically turned on if the
status of the IP phone changes or any key is pressed.
The following table lists available methods and configuration options to configure the
backlight of each phone model.
Phone Model
Configuration Methods
Configuration Files
SIP-T28P
Web User Interface
Phone User Interface
Configuration Files
Web User Interface
SIP-T26P
Phone User Interface (only
applicable to the connected
EXP39)
SIP-T22P
Configuration Files
Web User Interface
Configuration Options
Backlight Active Level
Backlight Time
Backlight Active Level (only
applicable to the connected
EXP39)
Backlight Time
Backlight Time
Procedure
Backlight can be configured using the configuration files or locally.
Configure the backlight of the
Configuration File
<y0000000000xx>.cfg
LCD screen.
For more information, refer to
Backlight on page 277.
Configure the backlight of the
LCD screen.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=settings-preference&q=load
Phone User Interface
44
Configure the backlight of the
LCD screen.
Configuring Basic Features
To configure backlight via web user interface:
1.
Click on Settings->Preference.
2.
Select the desired value from the pull-down list of Backlight Active Level (only
applicable to SIP-T28P IP phones and the connected EXP39).
3.
Select the desired value from the pull-down list of Backlight Time (seconds).
4.
Click Confirm to accept the change.
To configure backlight via phone user interface (only applicable to SIP-T28P IP phones
and EXP39 connected to SIP-T26P and SIP-T28P IP phones):
1.
Press Menu->Settings->Basic Settings->Display->Backlight.
2.
Press
or
, or the Switch soft key to select the desired level from the Active
Level field.
3.
Press
or
, or the Switch soft key to select the desired type from the
Backlight Time field.
4.
Note
Press the Save soft key to accept the change.
Before you adjust the LCD’s backlight of expansion module, make sure the expansion
module has been connected to the IP phone.
Some menu options are protected by two privilege levels, user and administrator, each
with its own password. When logging into the web user interface, you need to enter the
user name and password to access various menu options.
A user or an administrator can change the user password. The default user password is
“user”. For security reasons, the user or administrator should change the default user
password as soon as possible.
45
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Procedure
User password can be changed using the configuration files or locally.
Change the user password of the
Configuration File
<y0000000000xx>.cfg
IP phone.
For more information, refer to
User Password on page 278.
Change the user password of the
IP phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=security&q=load
To change the user password via web user interface:
1.
Click on Security->Password.
2.
Select user from the pull-down list of User Type.
3.
Enter new password in the New Password and Confirm Password fields.
The new password should be complex and contains at least 6 characters, where at
least one character is numeric, and one character is alphabetic. Valid characters
contain A-Z, a-z, 0-9,#,!,@,-,.,*,+ and $.
4.
Note
Click Confirm to accept the change.
If logging into the web user interface of the phone with the user credential, you need to
enter the old user password in the Old Password field.
Advanced menu options are strictly used by administrators. Users can configure them
only if they have administrator privileges. The administrator password can only be
changed by an administrator. The default administrator password is “admin”. For
security reasons, the administrator should change the default administrator password
as soon as possible.
46
Configuring Basic Features
Procedure
Administrator password can be changed using the configuration files or locally.
Change the administrator
password.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Administrator Password on page
278.
Change the administrator
password.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=security&q=load
Phone User Interface
Change the administrator
password.
To change the administrator password via web user interface:
1.
Click on Security->Password.
2.
Select admin from the pull-down list of User Type.
3.
Enter the current administrator password in the Old Password field.
4.
Enter new password in the New Password and Confirm Password fields.
The new password should be complex and contains at least 6 characters, where at
least one character is numeric, and one character is alphabetic. Valid characters
contain A-Z, a-z, 0-9,#,!,@,-,.,*,+ and $.
5.
Click Confirm to accept the change.
To change the administrator password via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Set Password.
2.
Enter the current administrator password in the Current PWD field.
3.
Enter new password in the New PWD field and Confirm PWD field.
4.
Press the Save soft key to accept the change.
47
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Phone lock is used to lock the IP phone to prevent it from unauthorized use. Once the
IP phone is locked, a user must enter the password to unlock it. IP phones offer three
types of phone lock: Menu Key, Function Keys and All Keys. The IP phone will not be
locked immediately after the phone lock type is configured. One of the following
steps is also needed:
-
Long press the pound key when the IP phone is idle.
-
Press the keypad lock key (if configured) when the IP phone is idle.
In addition to the above steps, you can configure the IP phone to automatically lock
the keypad after a period of time.
Procedure
Phone lock can be configured using the configuration files or locally.
Configure the type of phone
lock.
Change the unlock PIN.
Configure the IP phone to
automatically lock the keypad
Configuration File
<y0000000000xx>.cfg
after a time interval.
For more information, refer to
Phone Lock on page 279.
Assign a keypad lock key.
For more information, refer to
Keypad Lock Key on page 408.
Configure the type of phone
lock.
Change the unlock PIN.
Configure the IP phone to
automatically lock the keypad
after a time interval.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=features-phonelock&q=lo
ad
Assign a keypad lock key.
Navigate to:
http://<phoneIPAddress>/servl
et?p=dsskey&q=load&model=
48
Configuring Basic Features
0
Configure the type of phone
Phone User Interface
lock.
Assign a keypad lock key.
To configure phone lock via web user interface:
1.
Click on Features->Phone Lock.
2.
Select the desired type from the pull-down list of Keypad Lock Type.
3.
Enter the unlock PIN in the Phone Unlock PIN (0~15 Digit) field.
4.
Enter the desired time in the Phone Lock Time Out (0~3600s) field.
5.
Click Confirm to accept the change.
To configure a keypad lock key via web user interface:
1.
Click on DSSKey->Memory Key (Line Key or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones
only support line keys and programable keys.
49
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2.
In the desired DSS key field, select Keypad Lock from the pull-down list of Type.
3.
Click Confirm to accept the change.
To configure the type of phone lock via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Phone
Settings->Keypad Lock.
2.
Press
or
, or the Switch soft key to select the desired type from the Keypad
Lock field.
3.
Press the Save soft key to accept the change.
To change the unlock PIN via phone user interface:
1.
Press Menu->Settings->Basic Settings->Phone Unlock PIN.
2.
Enter the current unlock PIN in the Current PIN field.
3.
Enter the new unlock PIN in the New PIN field.
4.
Enter the new unlock PIN again in the Confirm PIN field.
5.
Press the Save soft key to accept the change.
To configure a keypad lock key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
4.
Press the Save soft key to accept the change.
or
, or the Switch soft key to select Keypad Lock from the Type field.
IP phones maintain a local clock and calendar. Time and date are displayed on the idle
screen of IP phones. Time and date are synced automatically from the NTP server by
default. The NTP server can be obtained by DHCP or configured manually. If IP phones
cannot obtain the time and date from the NTP server, you need to manually configure
50
Configuring Basic Features
them. The time and date display can use one of several different formats.
Time Zone
A time zone is a region on Earth that has a uniform standard time. It is convenient for
areas in close commercial or other communication to keep the same time. When
configuring the IP phone to obtain the time and date from the NTP server, you must set
the time zone.
Daylight Saving Time
Daylight Saving Time (DST) is the practice of temporary advancing clocks during the
summertime so that evenings have more daylight and mornings have less. Typically,
clocks are adjusted forward one hour at the start of spring and backward in autumn.
Many countries have used the DST at various times, details vary by location. The DST
can be adjusted automatically from the time zone configuration. Typically, there is no
need to change this setting.
The following table lists available configuration methods for time and date.
Option
Configuration Methods
Configuration Files
Time Zone
Web User Interface
Phone User Interface
Time
Web User Interface
Phone User Interface
Configuration Files
Time Format
Web User Interface
Phone User Interface
Date
Web User Interface
Phone User Interface
Configuration Files
Date Format
Web User Interface
Phone User Interface
Daylight Saving Time
Configuration Files
Web User Interface
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure NTP by DHCP priority
feature.
51
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Configure the NTP server, time
zone and DST.
Configure the time and date
manually.
Configure the time and date
formats.
For more information, refer to
Time and Date on page 281.
Configure NTP by DHCP priority
feature.
Configure the NTP server, time
zone and DST.
Configure the time and date
Web User Interface
manually.
Configure the time and date
formats.
Navigate to:
Local
http://<phoneIPAddress>/servlet
?p=settings-datetime&q=load
Configure the NTP server and
time zone.
Phone User Interface
Configure the time and date
manually.
Configure the time and date
formats.
To configure NTP by DHCP priority feature via web user interface:
1.
52
Click on Settings->Time & Date.
Configuring Basic Features
2.
Select the desired value from the pull-down list of NTP By DHCP Priority.
3.
Click Confirm to accept the change.
To configure the NTP server, time zone and DST via web user interface:
1.
Click on Settings->Time & Date.
2.
Select Disabled from the pull-down list of Manual Time.
3.
Select the desired time zone from the pull-down list of Time Zone.
4.
Enter the domain names or IP addresses in the Primary Server and Secondary
Server fields respectively.
5.
Enter the desired time interval in the Synchronism (15~86400s) field.
6.
Select the desired value from the pull-down list of Daylight Saving Time.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
If you select Enabled, do one of the following:
-
Mark the DST By Date radio box in the Fixed Type field.
Enter the start time in the Start Date field.
Enter the end time in the End Date field.
-
Mark the DST By Week radio box in the Fixed Type field.
Select the desired values from the pull-down lists of DST Start Month, DST Start
Day of Week, DST Start Day of Week Last in Month, DST Stop Month, DST Stop
Day of Week and DST Stop Day of Week Last in Month.
Enter the desired time in the Start Hour of Day field.
Enter the desired time in the End Hour of Day field.
7.
54
Enter the desired offset time in the Offset (minutes) field.
Configuring Basic Features
8.
Click Confirm to accept the change.
To configure the time and date manually via web user interface:
1.
Click on Settings->Time & Date.
2.
Select Enabled from the pull-down list of Manual Time.
3.
Enter the time and date in the corresponding fields.
4.
Click Confirm to accept the change.
To configure the time and date format via web user interface:
1.
Click on Settings->Time & Date.
2.
Select the desired value from the pull-down list of Time Format.
3.
Select the desired value from the pull-down list of Date Format.
4.
Click Confirm to accept the change.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To configure the NTP server and time zone via phone user interface:
1.
Press Menu->Settings->Basic Settings->Time & Date->SNTP Settings.
2.
Press
or
, or the Switch soft key to select the time zone that applies to your
area from the Time Zone field.
The default time zone is "+8 China(Beijing)".
3.
Enter the domain names or IP addresses in the NTP Server1 and NTP Server2 fields
respectively.
4.
Press the Save soft key to accept the change.
To configure the time and date manually via phone user interface:
1.
Press Menu->Settings->Basic Settings->Time & Date->Manual Settings.
2.
Enter the date in the Date field.
3.
Enter the time in the Time field.
4.
Press the Save soft key to accept the change.
To configure the time and date formats via phone user interface:
1.
Press Menu->Settings->Basic Settings->Time & Date->Time & Date Format.
2.
Press
or
, or the Switch soft key to select the desired time format from the
Clock field.
3.
Press
or
, or the Switch soft key to select the desired date format from the
Date Format field.
4.
Press the Save soft key to accept the change.
IP phones support multiple languages. Languages used on the phone user interface
and web user interface can be specified respectively as required.
The following table lists languages supported by the phone user interface and the web
user interface respectively.
Phone User Interface
56
Web User Interface
English
English
German
Chinese_S (only applicable to
Chinese_S (only applicable to
SIP-T19P and SIP-T21P IP phones)
SIP-T19P and SIP-T21P IP phones)
German
Chinese_T (only applicable to
French (not applicable to SIP-T19P
SIP-T19P and SIP-T21P IP phones)
and SIP-T21P IP phones)
French
Italian
Italian
Portuguese (not applicable to
Configuring Basic Features
Phone User Interface
Web User Interface
Portuguese
SIP-T19P and SIP-T21P IP phones)
Polish
Spanish (not applicable to
Spanish
SIP-T19P and SIP-T21P IP phones)
Turkish
Turkish
Not all of supported languages are available for selection. Languages available for
selection depend on language packs currently loaded to the IP phone. You can make
languages available for use on the phone user interface by loading language packs to
the IP phone. Language packs can only be loaded using configuration files.
The following table lists available languages and associated language packs.
Available Language
English
Associated Language Pack
lang+English.txt
Chinese_S (only applicable to
SIP-T19P and SIP-T21P IP phones)
Chinese_T (only applicable to
SIP-T19P and SIP-T21P IP phones)
lang-Chinese_S.txt
lang-Chinese_T.txt
German
lang-German.txt
French
lang-French.txt
Italian
lang-Italian.txt
Portuguese
lang-Portuguese.txt
Polish
lang-Polish.txt
Spanish
lang-Spanish.txt
Turkish
lang-Turkish.txt
Procedure
Loading language pack can only be performed using the configuration files.
Specify the access URL of the
Configuration File
<y0000000000xx>.cfg
language pack.
For more information, refer to
Language on page 287.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The default language used on the phone user interface is English. The default language
used on the web user interface depends on the language preferences in the browser (if
the language is not supported by the IP phone, the web user interface uses English). You
can specify the languages for the phone user interface and web user interface
respectively.
Procedure
Specify the language for the phone user interface or the web user interface using the
configuration files or locally.
Specify the languages for the
phone user interface and the
Configuration File
<y0000000000xx>.cfg
web user interface.
For more information, refer to
Language on page 287.
Specify the language for the web
user interface.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=settings-preference&q=load
Phone User Interface
Specify the language for the
phone user interface.
To specify the language for the web user interface via web user interface:
58
1.
Click on Settings->Preference.
2.
Select the desired language from the pull-down list of Language.
3.
Click Confirm to accept the change.
Configuring Basic Features
To specify the language for the phone user interface via phone user interface:
1.
Press Menu->Settings->Basic Settings->Language.
2.
Press
3.
Press the Save soft key to accept the change.
or
to select the desired language.
Logo customization allows unifying the IP phone appearance or displaying a custom
image on the idle screen such as a company logo, instead of the default system logo.
SIP-T20P IP phones only support a text logo.
The following table lists the logo file format and resolution for each phone model.
Note
Phone Model
Logo File Format
Resolution
SIP-T28P
.dob
<=236*82
2 gray scale
SIP-T26P
.dob
<=132*64
2 gray scale
SIP-T22P/T21P/T19P
.dob
<=132*64
2 gray scale
The format of the logo file must be *.dob. Before uploading your custom logo to IP
phones, ensure your logo file is correctly formatted. For more information on customizing
a logo file, refer to Yealink_SIP-T2
Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide.
Procedure
The logo shown on the idle screen can be configured using the configuration files or
locally.
Configure the logo shown on the
Configuration File
<y0000000000xx>.cfg
idle screen.
For more information, refer to
Logo Customization on page 289.
Configure the logo shown on the
idle screen.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To configure an image logo via web user interface (not applicable to SIP-T20P IP
phones):
1.
Click on Features->General Information.
2.
Select Custom logo from the pull-down list of Use Logo.
3.
Click Browse to select the logo file from your local system.
4.
Click Upload to upload the file.
5.
Click Confirm to accept the change.
For SIP-T28P IP phones, the image logo is displayed on the idle screen. For
SIP-T26P/T22P IP phones, the image logo screen and the idle screen are displayed
alternately.
To configure a text logo via web user interface (only applicable to SIP-T20P IP phones):
60
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of User Logo.
Configuring Basic Features
3.
Enter the desired text (0~15 characters) in the Text Logo field.
4.
Click Confirm to accept the change.
The registered account and the configured text logo are displayed alternately.
Softkey layout is used to customize the soft keys at the bottom of the LCD screen to best
meet users’ requirements. It can be configured based on call states. In addition to
specifying which soft keys to display, you can determine their display order. Softkey
layout is not applicable to SIP-T20P IP phones. You can create softkey layout templates
for different call states. For more information on the softkey layout template, refer to
Softkey Layout Template on page 231.
The following table lists soft keys available for IP phones in different call states.
Call State
CallFailed
Default Soft Keys
Optional Soft Keys
NewCall
Empty
Empty
Switch
Empty
Cancel
Empty
CallIn
Answer
Empty
Forward
Switch
Silence
Reject
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Call State
Connecting
Default Soft Keys
Optional Soft Keys
Empty
Empty
Empty
Switch
Empty
Cancel
Connecting
SemiAttendTrans
Transfer
Empty
Empty
Switch
Empty
Cancel
Dialing
Send
Empty
IME
History
Delete
Switch
Cancel
Line
Favorite
GPickup
DPickup
RingBack
Empty
Empty
Empty
Switch
Empty
CC
Cancel
RingBack
SemiAttendTransBack
Transfer
Empty
Empty
Switch
Empty
CC
Cancel
Talk
Transfer
Empty
Hold
Mute
Conference
SWAP
Cancel
NewCall
Switch
Answer
Talking
Reject
Hold
62
Transfer
Empty
Resume
Switch
NewCall
Answer
Cancel
Reject
Configuring Basic Features
Call State
Default Soft Keys
Held
Optional Soft Keys
Empty
Empty
Empty
Switch
Empty
Answer
Cancel
Reject
NewCall
PreTrans
Conferenced
Transfer
Empty
IME
Directory
Delete
Switch
Cancel
Send
Empty
Empty
Hold
Switch
Split
Answer
Cancel
Reject
Mute
Procedure
Softkey layout can be configured using the configuration files or locally.
Specify the access URL of the
softkey layout template.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Softkey Layout on
page 393.
Configure the softkey layout.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=settings-softkey&q=load
To configure softkey layout via web user interface:
1.
Click on Settings->Softkey Layout.
2.
Select the desired value from the pull-down list of Custom Softkey.
3.
Select the desired state from the pull-down list of Call States.
4.
Select the desired soft key from the Unselected Softkeys column and then
click
.
The selected soft key appears in the Selected Softkeys column.
5.
Repeat the step 4 to add more soft keys to the Selected Softkeys column.
6.
To remove the soft key from the Selected Softkeys column, select the desired soft
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
key and then click
7.
.
To adjust the display order of soft keys, select the desired soft key and then click
or
.
The LCD screen displays the soft keys in the adjusted order.
8.
Click Confirm to accept the change.
Key as send allows assigning the pound key or star key as a send key. Send sound
allows the IP phone to play a key tone when a user presses the send key. Key tone
allows the IP phone to play a key tone when a user presses any key. Send sound works
only if Key tone is enabled.
Procedure
Key as send can be configured using the configuration files or locally.
Configure a send key.
Configure a send sound.
Configuration File
<y0000000000xx>.cfg
Configure a key tone.
For more information, refer to Key
as Send on page 290.
Configure a send key.
Navigate to:
http://<phoneIPAddress>/servlet
Local
Web User Interface
?p=features-general&q=load
Configure a send sound and key
tone.
Navigate to:
64
Configuring Basic Features
http://<phoneIPAddress>/servlet
?p=features-audio&q=load
Phone User Interface
Configure the send key.
To configure a send key via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Key As Send.
3.
Click Confirm to accept the change.
To configure a send sound and key tone via web user interface:
1.
Click on Features->Audio.
2.
Select the desired value from the pull-down list of Key Sound.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
3.
Select the desired value from the pull-down list of Send Sound.
4.
Click Confirm to accept the change.
To configure send key via phone user interface:
1.
Press Menu->Features->Key as Send.
2.
Press
or
, or the Switch soft key to select # or * from the Key as Send field,
or select Disable to disable this feature.
3.
Press the Save soft key to accept the change.
Hotline is a point-to-point communication link in which a call is automatically directed to
the preset hotline number. The IP phone automatically dials out the hotline number using
the first available line after a specified time interval when off-hook. IP phones only
support one hotline number.
Procedure
Hotline can be configured using the configuration files or locally.
Configure the hotline number.
Specify the time (in seconds) the
IP phone waits before
Configuration File
<y0000000000xx>.cfg
automatically dialing out the
hotline number.
For more information, refer to
Hotline on page 292.
Local
66
Web User Interface
Configure the hotline number.
Specify the time (in seconds) the
Configuring Basic Features
IP phone waits before
automatically dial out the hotline
number.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Configure the hotline number.
Specify the time (in seconds) the
Phone User Interface
IP phone waits before
automatically dialing out the
hotline number.
To configure hotline via web user interface:
1.
Click on Features->General Information.
2.
Enter the hotline number in the Hotline Number field.
3.
Enter the delay time in the Hotline Delay (0~10s) field.
4.
Click Confirm to accept the change.
To configure hotline via phone user interface:
1.
Press Menu->Features->Hot Line.
2.
Enter the hotline number in the Hot Number field.
3.
Enter the waiting time (in seconds) in the HotLine Delay field.
4.
Press the Save soft key to accept the change.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Call log contains call information such as remote party identification, time and date,
and call duration. IP phones maintain a local call log. Call log consists of four lists:
Placed Calls, Received Calls, Missed Calls and Forwarded Calls. Call log lists support
100 entries in all. To store call information, you must enable save call log feature in
advance.
Procedure
Call log can be configured using the configuration files or locally.
Configure call log feature.
Configuration File
<y0000000000xx>.cfg
For more information, refer to Call
Log on page 293.
Configure call log feature.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Phone User Interface
Configure the call log.
To configure call log feature via web user interface:
68
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Save Call Log.
3.
Click Confirm to accept the change.
Configuring Basic Features
To configure call log feature via phone user interface:
1.
Press Menu->Features->History Setting.
2.
Press
or
, or the Switch soft key to select the desired value from the History
Record field.
3.
Press the Save soft key to accept the change.
Missed call log allows the IP phone to display the number of missed calls with an
indicator icon on the idle screen, and to log missed calls in the Missed Calls list when
the IP phone misses calls. It is configurable on a per-line basis. Once the user
accesses the Missed Calls list, the prompt message and indicator icon on the idle
screen disappear.
Procedure
Missed call log can be configured using the configuration files or locally.
Configure missed call log feature.
Configuration File
<MAC>.cfg
For more information, refer to
Missed Call Log on page 293.
Configure missed call log feature.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servlet
?p=account-basic&q=load&acc
=0
To configure missed call log via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Basic.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
4.
Select the desired value from the pull-down list of Missed Call Log.
5.
Click Confirm to accept the change.
IP phones maintain a local directory. The local directory can store up to 1000 contacts
and 5 groups. When adding a contact to the local directory, in addition to name and
phone numbers, you can also specify the account, ring tone and group for the contact.
Contacts and groups can be added either one by one or in batch using a local contact
file. For more information on the contact file, refer to Local Contact File on page 233.
Procedure
Configuration changes can be performed using the configuration files or locally.
Specify the access URL of the
local contact file.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Local Contact File
on page 396.
Add a group and a contact to the
local directory.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=contactsbasic&q=load&num
=1&group=
Phone User Interface
70
Add a group and a contact to the
local directory.
Configuring Basic Features
To add a group to the local directory via web user interface:
1.
Click on Directory->Local Directory.
2.
In the Group Setting block, enter the desired group name in the Group field.
3.
Select the desired ring tone from the pull-down list of Ring field.
4.
Click Add to add the group.
To add a contact to the local directory via web user interface:
1.
Click on Directory->Local Directory.
2.
In the Directory block, enter the name and the office, mobile or other numbers in the
corresponding fields.
3.
Select the desired ring tone from the pull-down list of Ring Tone.
4.
Select the desired group from the pull-down list of Group.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
5.
Select the desired account from the pull-down list of Account.
If Auto is selected, the IP phone will use the first available account when placing
calls to the contact from the local directory.
6.
Click Add to add the contact.
To add a group to the local directory via phone user interface:
1.
Press Menu->Directory->Local Directory.
2.
Press the AddGrp soft key.
3.
Enter the desired group name in the Name field.
4.
Press
or
, or the Switch soft key to select the desired group ring tone from
the Ring Tones field.
5.
Press the Add soft key to accept the change.
To add a contact to the local directory via phone user interface:
1.
Press Menu->Directory->Local Directory.
2.
Select the desired contact group.
3.
Press the Add soft key.
4.
Enter the name and the office, mobile or other numbers in the corresponding fields.
5.
Press
or
, or the Switch soft key to select the desired account from the
Account field.
If Auto is selected, the IP phone will use the first available account when placing
calls to the contact from the local directory.
6.
Press
or
, or the Switch soft key to select the desired ring tone from the Ring
Tones field.
7.
72
Press the Save soft key to accept the change.
Configuring Basic Features
Live dialpad allows IP phones to automatically dial out the entered phone number after
a specified period of time.
Procedure
Live dialpad can be configured using the configuration files or locally.
Configure live dialpad.
Configuration File
<y0000000000xx>.cfg
For more information, refer to Live
Dialpad on page 294.
Configure live dialpad.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=settings-preference&q=load
To configure live dialpad via web user interface:
1.
Click on Settings->Preference.
2.
Select the desired value from the pull-down list of Live Dialpad.
3.
Enter the desired delay time in the Inter Digit Time (1~14s) field.
4.
Click Confirm to accept the change.
Call waiting allows IP phones to receive a new call when there is already an active
call. The new incoming call is presented to the user visually on the LCD screen. Call
waiting tone allows the phone to play a short tone, to remind the user audibly of a
new incoming call during conversation. Call waiting tone works only if call waiting is
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
enabled.
Procedure
Call waiting and call waiting tone can be configured using the configuration files or
locally.
Configure call waiting and call
Configuration File
<y0000000000xx>.cfg
waiting tone.
For more information, refer to Call
Waiting on page 295.
Configure call waiting.
Navigate to:
http://<phoneIPAddress>/servlet
Web User Interface
Local
?p=features-general&q=load
Configure call waiting tone.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-audio&q=load
Phone User Interface
Configure call waiting and call
waiting tone.
To configure call waiting via web user interface:
74
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Call Waiting.
3.
(Optional.) Enter the call waiting on code in the Call Waiting On Code field.
Configuring Basic Features
4.
(Optional.) Enter the call waiting off code in the Call Waiting Off Code field.
5.
Click Confirm to accept the change.
To configure call waiting tone via web user interface:
1.
Click on Features->Audio.
2.
Select the desired value from the pull-down list of Call Waiting Tone.
3.
Click Confirm to accept the change.
To configure call waiting and call waiting tone via phone user interface:
1.
Press Menu->Features->Call Waiting.
2.
Press
or
, or the Switch soft key to select the desired value from the Call
Waiting field.
3.
Press
or
, or the Switch soft key to select the desired value from the Play
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Tone field.
4.
(Optional.) Enter the call waiting on code in the CW On Code field.
5.
(Optional.) Enter the call waiting off code in the CW Off Code field.
6.
Press the Save soft key to accept the change.
Auto redial allows IP phones to redial a busy number after the first attempt. Both the
number of attempts and waiting time between redials are configurable.
Procedure
Auto redial can be configured using the configuration files or locally.
Configure auto redial feature.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Auto Redial on page 296.
Configure auto redial feature.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Phone User Interface
Configure auto redial feature.
To configure auto redial via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Auto Redial.
3.
Enter the waiting time in the Auto Redial Interval (1~300s) field.
The default waiting time is 10s.
76
Configuring Basic Features
4.
Enter the desired times in the Auto Redial Times (1~300) field.
The default value is 10.
5.
Click Confirm to accept the change.
To configure auto redial via phone user interface:
1.
Press Menu->Features->Auto Redial.
2.
Press
or
, or the Switch soft key to select the desired value from the Auto
Redial field.
3.
Enter the waiting time (in seconds) in the Redial Interval field.
4.
Enter the desired times in the Redial Times field.
5.
Press the Save soft key to accept the change.
Auto answer allows IP phones to automatically answer an incoming call. IP phones will
not automatically answer the incoming call during a call even if auto answer is enabled.
Auto answer is configurable on a per-line basis. Auto-Answer delay defines a period of
delay time before the IP phone automatically answers incoming calls.
Procedure
Auto answer can be configured using the configuration files or locally.
Configure auto answer.
Configuration File
<MAC>.cfg
For more information, refer to
Auto Answer on page 297.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Specify a period of delay time for
<y0000000000xx>.cfg
auto answer.
For more information, refer to
Auto Answer on page 297.
Configure auto answer.
Navigate to:
http://<phoneIPAddress>/servlet
?p=account-basic&q=load&acc
Local
Web User Interface
=0
Specify a period of delay time for
auto answer.
Navigate to:
http://<phoneIPAddress>servlet?
p=features-general&q=load
Phone User Interface
Configure auto answer.
To configure auto answer via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Basic.
4.
Select the desired value from the pull-down list of Auto Answer.
5.
Click Confirm to accept the change.
To configure a period of delay time for auto answer via web user interface:
1.
78
Click on Features->General Information.
Configuring Basic Features
2.
Enter the desired time in the Auto-Answer Delay (1~4s) field.
3.
Click Confirm to accept the change.
To configure auto answer via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Accounts.
2.
Select the desired account and then press the Enter soft key.
3.
Press
or
, or the Switch soft key to select the desired value from the Auto
Answer field.
4.
Press the Save soft key to accept the change.
Call completion allows users to monitor the busy party and establish a call when the
busy party becomes available to receive a call. Two factors commonly prevent a call
from connecting successfully:

Callee does not answer

Callee actively rejects the incoming call before answering
IP phones support call completion using the SUBSCRIBE/NOTIFY method, which is
specified in draft-poetzl-sipping-call-completion-00, to subscribe to the busy party and
receive notifications of their status changes.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Procedure
Call completion can be configured using the configuration files or locally.
Configure call completion.
Configuration File
<y0000000000xx>.cfg
For more information, refer to Call
Completion on page 298.
Configure call completion.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Phone User Interface
Configure call completion.
To configure call completion via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Call Completion.
3.
Click Confirm to accept the change.
To configure call completion via phone user interface:
1.
Press Menu->Features->Call Completion.
2.
Press
or
, or the Switch soft key to select the desired value from the Call
Completion field.
3.
80
Press the Save soft key to accept the change.
Configuring Basic Features
Anonymous call allows the caller to conceal the identity information displayed on the
callee’s screen. The callee’s phone LCD screen prompts an incoming call from
anonymity. Anonymous call is configurable on a per-line basis.
Example of anonymous SIP header:
Via: SIP/2.0/UDP 10.2.8.183:5063;branch=z9hG4bK1535948896
From: "Anonymous" <sip:anonymous@anonymous.invalid>;tag=128043702
To: <sip:1011@10.2.1.199>
Call-ID: 1773251036@10.2.8.183
CSeq: 1 INVITE
Contact: <sip:1012@10.2.8.183:5063>
Content-Type: application/sdp
Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY, REGISTER, SUBSCRIBE, REFER,
PUBLISH, UPDATE, MESSAGE
Max-Forwards: 70
User-Agent: Yealink SIP-T28P 2.72.0.1
Privacy: id
Supported: replaces
Allow-Events: talk,hold,conference,refer,check-sync
P-Preferred-Identity: <sip:1012@10.2.1.199>
Content-Length: 302
The anonymous call on code and anonymous call off code configured on IP phones are
used to activate/deactivate the server-side anonymous call feature. They may vary on
different servers. Send Anonymous Code feature allows IP phones to send anonymous
on/off code to the server.
Procedure
Anonymous call can be configured using the configuration files or locally.
Configure anonymous call.
Configuration File
<MAC>.cfg
For more information, refer to
Anonymous Call on page 299.
Configure anonymous call.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servlet
?p=account-basic&q=load&acc
=0
Phone User Interface
Configure anonymous call.
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To configure anonymous call via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Basic.
4.
Select the desired value from the pull-down list of Local Anonymous.
5.
Select the desired value from the pull-down list of Send Anonymous Code.
6.
(Optional.) Enter the anonymous call on code in the On Code field.
7.
(Optional.) Enter the anonymous call off code in the Off Code field.
8.
Click Confirm to accept the change.
To configure the anonymous call via phone user interface:
1.
Press Menu->Features->Anonymous Call.
2.
Press
or
, or the Switch soft key to select the desired line from the Line ID
or
, or the Switch soft key to select the desired value from the Send
field.
3.
Press
Anon field.
4.
Press
or
, or the Switch soft key to select the desired value from the Anon
Code field.
5.
(Optional.) Enter the anonymous call on code in the Call On Code field.
6.
(Optional.) Enter the anonymous call off code in the Call Off Code field.
7.
Press the Save soft key to accept the change.
Anonymous call rejection allows IP phones to automatically reject incoming calls from
callers whose identity has been deliberately concealed. The anonymous caller’s phone
LCD screen presents “Anonymity Disallowed”. Anonymous call rejection is configurable
on a per-line basis.
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Configuring Basic Features
The anonymous call rejection on code and anonymous call rejection off code
configured on IP phones are used to activate/deactivate the server-side anonymous call
rejection feature. They may vary on different servers.
Procedure
Anonymous call rejection can be configured using the configuration files or locally.
Configure anonymous call
rejection.
Configuration File
<MAC>.cfg
For more information, refer to
Anonymous Call Rejection on
page 301.
Configure anonymous call
rejection.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=account-basic&q=load&acc
=0
Phone User Interface
Configure anonymous call
rejection.
To configure anonymous call rejection via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Basic.
4.
Select the desired value from the pull-down list of Anonymous Call Rejection.
5.
(Optional.) Enter the anonymous call rejection on code in the On Code field.
6.
(Optional.) Enter the anonymous call rejection off code in the Off Code field.
7.
Click Confirm to accept the change.
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To configure anonymous call rejection via phone user interface:
1.
Press Menu->Features->Anonymous Call.
2.
Press
or
, or the Switch soft key to select the desired line from the Line ID
or
, or the Switch soft key to select the desired value from the Anon
field.
3.
Press
Rejection field.
4.
(Optional.) Enter the anonymous call rejection on code in the Reject On Code field.
5.
(Optional.) Enter the anonymous call rejection off code in the Reject Off Code field.
6.
Press the Save soft key to accept the change.
Do Not Disturb (DND) allows IP phones to ignore incoming calls. DND feature can be
configured on a phone or a per-line basis depending on the DND mode. Two DND
modes:

Phone (default): DND feature is effective for the IP phone.

Custom: DND feature can be configured for each or all accounts.
A user can activate or deactivate DND using the DND key or DND soft key (not
applicable to SIP-T20P IP phones). DND activated on the IP phone disables the local
call forward settings. The DND configurations on IP phones may be overridden by the
server settings.
The DND on code and DND off code configured on IP phones are used to
activate/deactivate the server-side DND feature. They may vary on different servers.
Return Message When DND
This feature defines the return code and the reason of the SIP response message for the
rejected incoming call when DND is enabled on the IP phone. The caller’s phone LCD
screen displays the received return code.
Procedure
DND can be configured using the configuration files or locally.
Configure DND in the custom
<MAC>.cfg
mode.
For more information, refer to Do
Not Disturb on page 302.
Configuration File
Assign a DND key.
<y0000000000xx>.cfg
For more information, refer to DND
Key on page 408.
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Configuring Basic Features
Configure the DND mode.
Configure DND in the phone
mode.
Specify the return code and the
reason of the SIP response
message when DND is enabled.
For more information, refer to Do
Not Disturb on page 302.
Assign a DND key.
Navigate to:
http://<phoneIPAddress>/servlet?
p=dsskey&q=load&model=0
Configure DND.
Navigate to:
Web User Interface
Local
http://<phoneIPAddress>/servlet?
p=features-forward&q=load
Specify the return code and the
reason of the SIP response
message when DND is enabled.
Navigate to:
http://<phoneIPAddress>/servlet?
p=features-general&q=load
Phone User Interface
Assign a DND key.
Configure DND.
To configure a DND key via web user interface:
1.
Click on DSSKey->Memory Key (Line Key or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones
only support line keys and programable keys.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2.
In the desired DSS key field, select DND from the pull-down list of Type.
3.
Click Confirm to accept the change.
To configure DND feature via web user interface:
1.
Click on Features->Forward & DND.
2.
In the DND block, mark the desired radio box in the Mode field.
a) If you mark the Phone radio box:
1) Mark the desired radio box in the DND Status field.
2) (Optional.) Enter the DND on code in the DND On Code field.
3) (Optional.) Enter the DND off code in the DND Off Code field.
b) If you mark the Custom radio box:
1) Select the desired account from the pull-down list of Account.
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Configuring Basic Features
2) Mark the desired radio box in the DND Status field.
3) (Optional.) Enter the DND on code in the DND On Code field.
4) (Optional.) Enter the DND off code in the DND Off Code field.
3.
Click Confirm to accept the change.
To specify the return code and the reason when DND is enabled via web user interface:
1.
Click on Features->General Information.
2.
Select the desired type from the pull-down list of Return Code When DND.
3.
Click Confirm to accept the change.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To configure a DND key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select DND from the Key Type field.
5.
Press the Save soft key to accept the change.
To configure DND in the phone mode via phone user interface:
1.
Press the DND soft key or the DND key when the IP phone is idle.
To configure DND in the custom mode for a specific account via phone user interface:
1.
Press the DND soft key or the DND key when the IP phone is idle.
The LCD screen displays a list of accounts registered on the IP phone.
2.
Press
or
to select the desired account.
3.
Press
or
to select On to activate DND.
You can configure DND in the custom mode for all accounts by pressing the All On
soft key.
4.
Press the Save soft key to accept the change.
Busy tone is audible to the other party, indicating that the call connection has been
broken when one party releases a call. Busy tone delay can define a period of time
during which the busy tone is audible.
Procedure
Busy tone delay can be configured using the configuration files or locally.
Configure busy tone delay.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Busy Tone Delay on page 305.
Configure busy tone delay.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To configure busy tone delay via web user interface:
1. Click on Features->General Information.
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Configuring Basic Features
2. Select the desired value from the pull-down list of Busy Tone Delay (Seconds).
3. Click Confirm to accept the change.
Return code when refuse defines the return code and reason of the SIP response
message for the refused call. The caller’s phone LCD screen displays the reason
according to the received return code. Available return codes and reasons are:

404 (Not found)

480 (Temporarily not available)

486 (Busy here)
Procedure
Return code for refused call can be configured using the configuration files or locally.
Specify the return code and the
reason of the SIP response
Configuration File
<y0000000000xx>.cfg
message when refusing a call.
For more information, refer to
Return Code When Refuse on
page 305.
Specify the return code and the
Local
Web User Interface
reason of the SIP response
message when refusing a call.
Navigate to:
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To specify the return code and the reason when refusing a call via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Return Code When Refuse.
3.
Click Confirm to accept the change.
Early media refers to media (e.g., audio and video) played to the caller before a SIP
call is actually established. Current implementation supports early media through the
183 message. When the caller receives a 183 message with SDP before the call is
established, a media channel is established. This channel is used to provide the early
media stream for the caller.
180 ring workaround defines whether to deal with the 180 message received after the
183 message. When the caller receives a 183 message, it suppresses any local ringback
tone and begins to play the media received. 180 ring workaround allows IP phones to
resume and play the local ringback tone upon a subsequent 180 message received.
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Configuring Basic Features
Procedure
180 ring workaround can be configured using the configuration files or locally.
Configure 180 ring workaround.
Configuration File
<y0000000000xx>.cfg
For more information, refer to 180
Ring Workaround on page 306.
Configur 180 ring workaround.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To configure 180 ring workaround via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of 180 Ring Workaround.
3.
Click Confirm to accept the change.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
An outbound proxy server can receive all initiating request messages and route them to
the designated destination. If the IP phone is configured to use an outbound proxy
server within a dialog, all SIP request messages from the IP phone will be sent to the
outbound proxy server forcefully.
Note
To use this feature, make sure the outbound server has been correctly configured on the
IP phone.
Procedure
Use outbound proxy in dialog can be configured using the configuration files or locally.
Specify whether to use outbound
proxy in a dialog.
Configuration File
<y0000000000xx>.cfg
For more information, refer to Use
Outbound Proxy in Dialog on
page 306.
Specify whether to use outbound
proxy in a dialog.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To specify whether to use outbound proxy server in a dialog via web user interface:
1.
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Click on Features->General Information.
Configuring Basic Features
2.
Select the desired value from the pull-down list of Use Outbound Proxy In Dialog.
3.
Click Confirm to accept the change.
SIP session timers T1, T2 and T4 are SIP transaction layer timers defined in RFC 3261.
Timer T1 is an estimate of the Round Trip Time (RTT) of transactions between a SIP client
and SIP server. Timer T2 represents the maximum retransmit interval for non-INVITE
requests and INVITE responses. Timer T4 represents the maximum duration a message
will remain in the network. These session timers are configurable on IP phones.
Procedure
SIP session timer can be configured using the configuration files or locally.
Configure SIP session timer.
Configuration File
<MAC>.cfg
For more information, refer to SIP
Session Timer on page 307.
Configure SIP session timer.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
To configure session timer via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Enter the desired value in the SIP Session Timer T1 (0.5~10s) field.
The default value is 0.5s.
5.
Enter the desired value in the SIP Session Timer T2 (2~40s) field.
The default value is 4s.
6.
Enter the desired value in the SIP Session Timer T4 (2.5~60s) field.
The default value is 5s.
7.
Click Confirm to accept the change.
Session timer allows a periodic refresh of SIP sessions through a re-INVITE request, to
determine whether a SIP session is still active. Session timer is specified in RFC 4028. IP
phones support two refresher modes: UAC and UAS. The UAC mode means refreshing
the session from the client, while the UAS mode means refreshing the session from the
server. The session expiration and session refresher are negotiated via the
Session-Expires header in the INVITE message. The negotiated refresher will send a
re-INVITE/UPDATE request at or before the negotiated session expiration.
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Configuring Basic Features
Procedure
Session timer can be configured using the configuration files or locally.
Configure session timer.
Configuration File
<MAC>.cfg
For more information, refer to
Session Timer on page 308.
Configure session timer.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
To configure session timer via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of Session Timer.
5.
Enter the desired time interval in the Session Expires (30~7200s) field.
6.
Select the desired refresher from the pull-down list of Session Refresher.
7.
Click Confirm to accept the change.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Call hold provides a service of placing an active call on hold. When a call is placed on
hold, the IP phone sends an INVITE request with a HOLD SDP to the server. IP phones
support two call hold methods, one is RFC 3264, which sets the “a” (media attribute) in
the SDP to sendonly, recvonly or inactive (e.g., a=sendonly). The other is RFC 2543,
which sets the “c” (connection addresses for the media streams) in the SDP to zero (e.g.,
c=0.0.0.0). Call hold tone allows IP phones to play a hold tone at regular intervals when
there is a call on hold.
Procedure
Call hold can be configured using the configuration files or locally.
Configure the call hold tone and
call hold tone delay.
Specify whether RFC 2543
Configuration File
<y0000000000xx>.cfg
(c=0.0.0.0) outgoing hold
signaling is used.
For more information, refer to Call
Hold on page 309.
Configure the call hold tone and
call hold tone delay.
Specify whether RFC 2543
Local
Web User Interface
(c=0.0.0.0) outgoing hold
signaling is used.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To configure call hold method via web user interface:
1.
96
Click on Features->General Information.
Configuring Basic Features
2.
Select the desired value from the pull-down list of RFC 2543 Hold.
3.
Click Confirm to accept the change.
To configure call hold tone and call hold tone delay via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Play Hold Tone.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
3.
Enter the desired time in the Play Hold Tone Delay field.
4.
Click Confirm to accept the change.
Call forward allows users to redirect an incoming call to a third party. IP phones redirect
an incoming INVITE message by responding with a 302 Moved Temporarily message,
which contains a Contact header with a new URI that should be tried. Three types of call
forward:

Always Forward -- Forward the incoming call immediately.

Busy Forward -- Forward the incoming call when the callee is busy.

No Answer Forward -- Forward the incoming call after a period of ring time.
Call forward can be configured on a phone or a per-line basis depending on the call
forward mode. The following describes the call forward modes:

Phone (default): Call forward feature is effective for the IP phone.

Custom: Call forward feature can be configured for each or all accounts.
The call forward on code and call forward off code configured on IP phones are used to
activate/deactivate the server-side call forward feature. They may vary on different
servers.
Forward International
Forward international allows users to forward an incoming call to an international
telephone number. This feature is enabled by default.
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Configuring Basic Features
Procedure
Call forward can be configured using the configuration files or locally.
Configure call forward in
<MAC>.cfg
custom mode.
For more information, refer to
Call Forward on page 311.
Configure the call forward
mode.
Configuration File
Configure call forward in
<y0000000000xx>.cfg
phone mode.
Configure forward
international.
For more information, refer to
Call Forward on page 311.
Configure call forward.
Navigate to:
http://<phoneIPAddress>/ser
vlet?p=features-forward&q=l
oad
Web User Interface
Local
Configure forward
international.
Navigate to:
http://<phoneIPAddress>/
servlet?p=features-general&
q=load
Phone User Interface
Configure call forward.
To configure call forward via web user interface:
1.
Click on Features->Forward & DND.
2.
In the Forward block, mark the desired radio box in the Mode field.
a) If you mark the Phone radio box:
1) Mark the desired radio box in the Always/Busy/No Answer Forward field.
2) Enter the destination number you want to forward in the Target field.
3) (Optional.) Enter the on code and off code in the On Code and Off Code
fields.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
4) Select the ring time to wait before forwarding from the pull-down list of After
Ring Time (0~120s) (only for the no answer forward).
b) If you mark the Custom radio box:
1) Select the desired account from the pull-down list of Account.
2) Mark the desired radio box in the Always/Busy/No Answer Forward field.
3) Enter the destination number you want to forward in the Target field.
4) Enter the on code and off code in the On Code and Off Code fields.
5) Select the ring time to wait before forwarding from the pull-down list of After
Ring Time (0~120s) (only for the no answer forward).
3.
Click Confirm to accept the change.
To configure forward international via web user interface:
1.
100
Click on Features->General Information.
Configuring Basic Features
2.
Select the desired value from the pull-down list of Fwd International.
3.
Click Confirm to accept the change.
To configure call forward in phone mode via phone user interface:
1.
Press Menu->Features->Call Forward.
2.
Press
or
to select the desired forwarding type, and then press the Enter
soft key.
3.
Depending on your selection:
a) If you select Always Forward:
1) Press
or
, or the Switch soft key to select the desired value from the
Always field.
2) Enter the destination number you want to forward all incoming calls to in the
Forward To field.
3) (Optional.) Enter the always forward on code and off code respectively in the
On Code and Off Code fields.
b) If you select Busy Forward:
1) Press
or
, or the Switch soft key to select the desired value from the
Busy field.
2) Enter the destination number you want to forward all incoming calls to when
the IP phone is busy in the Forward To field.
3) (Optional.) Enter the busy forward on code and off code respectively in the
On Code and Off Code fields.
c) If you select No Answer Forward:
1) Press
or
, or the Switch soft key to select the desired value from the
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
No Answer field.
2) Enter the destination number you want to forward all unanswered incoming
calls to in the Forward To field.
3) Press
or
, or the Switch soft key to select the ring time to wait before
forwarding from the After Ring Time field.
The default ring time is 12 seconds.
4) (Optional.) Enter the no answer forward on code and off code respectively in
the On Code and Off Code fields.
4.
Press the Save soft key to accept the change.
To configure call forward in custom mode via phone user interface:
1.
Press Menu->Features->Call Forward.
2.
Press
or
to select the desired account, and then press the Enter soft key.
3.
Press
or
to select the desired forwarding type, and then press the Enter
soft key.
4.
Depending on your selection:
a) If you select Always Forward, you can configure it for a specific account.
1) Press
or
, or the Switch soft key to select the desired value from the
Always field.
2) Enter the destination number you want to forward all incoming calls to in the
Forward To field.
3) (Optional.) Enter the always forward on code and off code respectively in the
On Code and Off Code fields.
You can also configure the always forward for all accounts. After the always
forward was configured for a specific account, do the following:
1) Press
or
to highlight the Always field.
2) Press the All Lines soft key.
The LCD screen prompts “Copy to All Lines?”.
3) Press the OK soft key to accept the change.
b) If you select Busy Forward, you can configure it for a specific account.
1) Press
or
, or the Switch soft key to select the desired value from the
Busy field.
2) Enter the destination number you want to forward all incoming calls to when
the IP phone is busy in the Forward To field.
3) (Optional.) Enter the busy forward on code and off code respectively in the
On Code and Off Code fields.
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Configuring Basic Features
You can also configure the busy forward for all accounts. After the busy forward
was configured for a specific account, do the following:
1) Press
or
to highlight the Busy field.
2) Press the All Lines soft key.
The LCD screen prompts “Copy to All Lines?”.
3) Press the OK soft key to accept the change.
c) If you select No Answer Forward, you can configure it for a specific account.
1) Press
or
, or the Switch soft key to select the desired value from the
No Answer field.
2) Enter the destination number you want to forward all unanswered incoming
calls to in the Forward To field.
3) Press
or
, or the Switch soft key to select the ring time to wait before
forwarding from the After Ring Time field
The default ring time is 12 seconds.
4) (Optional.) Enter the no answer forward on code and off code respectively in
the On Code and Off Code fields.
You can also configure the no answer forward for all accounts. After the no answer
forward was configured for a specific account, do the following:
1) Press
or
to highlight the No Answer field.
2) Press the All Lines soft key.
The LCD screen prompts “Copy to All Lines?”.
3) Press the OK soft key to accept the change.
5.
Press the Save soft key to accept the change.
Call transfer enables IP phones to transfer an existing call to another party. IP phones
support call transfer using the REFER method specified in RFC 3515 and offer three types
of transfer:

Blind Transfer -- Transfer a call directly to another party without consulting. Blind
transfer is implemented by a simple REFER method without Replaces in the Refer-To
header.

Semi-attended Transfer -- Transfer a call after hearing the ringback tone.
Semi-attended transfer is implemented by a REFER method with Replaces in the
Refer-To header.

Attended Transfer -- Transfer a call with prior consulting. Attended transfer is
implemented by a REFER method with Replaces in the Refer-To header.
Normally, call transfer is completed by pressing the transfer key. Blind transfer on hook
and semi-attended transfer on hook features allow the IP phone to complete the
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
transfer through on-hook.
When a user performs a semi-attended transfer, semi-attended transfer feature
determines whether to display the prompt "n New Missed Call(s)" ("n" indicates the
number of the missed calls) on the destination party’s phone LCD screen.
Procedure
Call transfer can be configured using the configuration files or locally.
Specify whether to complete the
transfer through on-hook.
Configuration File
<y0000000000xx>.cfg
Configure semi-attended transfer
feature.
For more information, refer to Call
Transfer on page 320.
Specify whether to complete the
transfer through on-hook.
Configure semi-attended transfer
Local
Web User Interface
feature.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-transfer&q=load
To configure call transfer via web user interface:
1.
Click on Features->Transfer.
2.
Select the desired values from the pull-down lists of Semi-Attend Transfer, Blind
Transfer On Hook and Semi Attend Transfer On Hook.
3.
104
Click Confirm to accept the change.
Configuring Basic Features
Network conference, also known as centralized conference, provides users with
flexibility of call with multiple participants (more than three). IP phones implement
network conference using the REFER method specified in RFC 4579. This feature
depends on support from a SIP server.
Procedure
Network conference can be configured using the configuration files or locally.
Configure network conference.
Configuration File
<MAC>.cfg
For more information, refer to
Network Conference on page
321.
Configure network conference.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
To configure the network conference via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select Network Conference from the pull-down list of Conference Type.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
5.
Enter the conference URI in the Conference URI field.
6.
Click Confirm to accept the change.
For local conference, all parties drop the call when the conference initiator drops the
conference call. Transfer on conference hang up allows the other two parties to remain
connected when the conference initiator drops the conference call.
Procedure
Transfer on conference hang up can be configured using the configuration files or
locally.
Configure the transfer on
conference hang up.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Transfer on Conference Hang Up
on page 322.
Configure the transfer on
conference hang up.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-transfer&q=load
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Configuring Basic Features
To configure Transfer on Conference Hang up via web user interface:
1.
Click on Features->Transfer.
2.
Select the desired value from the pull-down list of Transfer on Conference Hang up.
3.
Click Confirm to accept the change.
Directed call pickup is used for picking up an incoming call on a specific extension. A
user can pick up the incoming call using a directed pickup key or the DPickup soft key
(not applicable to SIP-T20P IP phones). This feature depends on support from a SIP server.
For many SIP servers, directed call pickup requires a directed pickup code, which can
be configured on a phone or a per-line basis.
Note
It is recommended not to configure the directed call pickup key and the DPickup soft key
simultaneously. If you do, the directed call pickup key will not be used correctly.
Procedure
Directed call pickup can be configured using the configuration files or locally.
Configure the directed call
pickup code on a per-line basis.
Configure directed call pickup
Configuration File
<MAC>.cfg
feature on a phone basis.
For more information, refer to
Directed Call Pickup on page
323.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Assign a directed call pickup
key.
<y0000000000xx>.cfg
For more information, refer to
Directed Call Pickup Key on
page 409.
Assign a directed call pickup
key.
Navigate to:
http://<phoneIPAddress>/servl
et?p=dsskey&q=load&model=
0
Configure directed call pickup
feature on a phone basis.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servl
et?p=features-callpickup&q=lo
ad
Configure directed call pickup
code on a per-line basis.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
c=0
Phone User Interface
Assign a directed call pickup
key.
To configure a directed call pickup key via web user interface:
1.
Click on DSSKey->Memory Key (Line Key or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones
only support line keys and programable keys.
2.
In the desired DSS key field, select Directed Pickup from the pull-down list of Type.
3.
Enter the directed call pickup code followed by the specific extension in the Value
field.
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Configuring Basic Features
4.
Select the desired line from the pull-down list of Line.
5.
Click Confirm to accept the change.
To configure directed call pickup feature on a phone basis via web user interface:
1.
Click on Features->Call Pickup.
2.
Select the desired value from the pull-down list of Directed Call Pickup (not
applicable to SIP-T20P IP phones).
3.
Enter the directed call pickup code in the Directed Call Pickup Code field.
4.
Click Confirm to accept the change.
To configure the directed call pickup code on a per-line basis via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
4.
Enter the directed call pickup code in the Directed Call Pickup Code field.
5.
Click Confirm to accept the change.
To configure a directed pickup key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Directed Pickup from the Key Type
or
, or the Switch soft key to select the desired line from the Account
field.
5.
Press
ID field.
6.
Enter the directed call pickup code followed by the specific extension in the Value
field.
7.
Press the Save soft key to accept the change.
Group call pickup is used for picking up incoming calls within a pre-defined group. If the
group receives many incoming calls at once, the user will pick up the first incoming call,
using a group pickup key or the GPickup soft key (not applicable to SIP-T20P IP phones).
This feature depends on support from a SIP server. For many SIP servers, group call
pickup requires a group pickup code, which can be configured on a phone or a per-line
basis.
110
Configuring Basic Features
Procedure
Group call pickup can be configured using the configuration files or locally.
Configure the group call pickup
code on a per-line basis.
<MAC>.cfg
Configure group call pickup
feature on a phone basis.
For more information, refer to
Configuration File
Group Call Pickup on page 324.
Assign a group call pickup key.
<y0000000000xx>.cfg
For more information, refer to
Group Call Pickup Key on page
411.
Assign a group call pickup key.
Navigate to:
http://<phoneIPAddress>/servl
et?p=dsskey&q=load&model=
0
Configure group call pickup
feature on a phone basis.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servl
et?p=features-callpickup&q=lo
ad
Configure the group call pickup
code on a per-line basis.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
c=0
Phone User Interface
Assign a group call pickup key.
To configure a group call pickup key via web user interface:
1.
Click on DSSKey->Memory Key (Line Key or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones
only support line keys and programable keys.
2.
In the desired DSS key field, select Group Pickup from the pull-down list of Type.
3.
Enter the group call pickup code in the Value field.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
4.
Select the desired line from the pull-down list of Line.
5.
Click Confirm to accept the change.
To configure group call pickup feature on a phone basis via web user interface:
1.
Click on Features->Call Pickup.
2.
Select the desired value from the pull-down list of Group Call Pickup (not applicable
to SIP-T20P IP phones).
3.
Enter the group call pickup code in the Group Call Pickup Code field.
4.
Click Confirm to accept the change.
To configure the group call pickup code on a per-line basis via web user interface:
112
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
Configuring Basic Features
4.
Enter the group call pickup code in the Group Call Pickup Code field.
5.
Click Confirm to accept the change.
To configure a group pickup key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Group Pickup from the Key Type
or
, or the Switch soft key to select the desired line from the Account
field.
5.
Press
ID field.
6.
Enter the group call pickup code in the Value field.
7.
Press the Save soft key to accept the change.
Call pickup is implemented through SIP signals on some specific servers. IP phones
support to pick up incoming calls via a NOTIFY message with dialog-info event. A user
can pick up an incoming call by pressing the DSS key used to monitor a specific
extension (such as the BLF key). This feature is not applicable to SIP-T19P IP phones.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Example of the dialog-info message carried in NOTIFY message:
<?xml version="1.0"?>
<dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="6" state="full"
entity="sip:1013@10.2.1.199">
<dialog id="706655206@10.2.8.213" call-id="706655206@10.2.8.213" local-tag="827932784"
remote-tag="1887460740" direction="recipient">
<state>early</state>
<local>
<identity>sip:1013@10.2.1.199</identity>
<target uri="sip:1013@10.2.1.199">
</target>
</local>
<remote>
<identity>sip:1011@10.2.1.199</identity>
<target uri="sip:1011@10.2.8.213:5063">
</target>
</remote>
</dialog>
</dialog-info>
Procedure
Dialog info call pickup can be configured using the configuration files or locally.
Configure dialog info call
pickup.
Configuration File
<MAC>.cfg
For more information, refer to
Dialog Info Call Pickup on page
325.
Configure dialog info call
pickup.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
c=0
To configure dialog info call pickup via web user interface:
114
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
Configuring Basic Features
4.
Select the desired value from the pull-down list of Dialog Info Call Pickup.
5.
Click Confirm to accept the change.
Call return, also known as last call return, allows users to place a call back to the last
caller. Call return is implemented on IP phones using a call return key.
Procedure
Call return key can be configured using the configuration files or locally.
Assign a call return key.
Configuration File
<y0000000000xx>.cfg
For more information, refer to Call
Return Key on page 413.
Assign a call return key.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=dsskey&q=load&model=0
Phone User Interface
Assign a call return key.
To configure a call return key via web user interface:
1.
Click on DSSKey->Memory Key (Line Key or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP
phones only support line keys and programable keys.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2.
In the desired DSS key field, select Call Return from the pull-down list of Type.
3.
Click Confirm to accept the change.
To configure a call return key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Call Return from the Key Type
field.
5.
Press the Save soft key to accept the change.
Call park allows users to park a call on a special extension and then retrieve it on any
other phone in the system. Users can park calls on the extension, known as call park
orbit, by pressing a call park key. The current call is placed on hold and can be
retrieved on another IP phone. This feature depends on support from a SIP server.
Note
SIP-T19P IP phones support call park feature for BroadSoft server only. For more
information, refer to Yealink IP Phones Deployment Guide for BroadSoft UC-One
Environments.
Procedure
Call park key can be configured using the configuration files or locally.
Assign a call park key.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Call Park Key on page 414.
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Configuring Basic Features
Assign a call park key.
Navigate to:
Web User Interface
Local
http://<phoneIPAddress>/servl
et?p=dsskey&q=load&model=
0
Phone User Interface
Assign a call park key.
To configure a call park key via web user interface:
1.
Click on DSSKey->Memory Key (or Line Key).
2.
In the desired DSS key field, select Call Park from the pull-down list of Type.
3.
Enter the desired value (e.g., call park feature code) in the Value field.
4.
Select the desired line from the pull-down list of Line.
5.
Click Confirm to accept the change.
To configure a call park key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Call Park from the Key Type field.
5.
Press
or
, or the Switch soft key to select the desired line from the Account
ID field.
6.
Enter the desired value (e.g., call park feature code) in the Value field.
7.
Press the Save soft key to accept the change.
Web server type determines access protocol of the IP phone’s web user interface. IP
phones support both HTTP and HTTPS protocols for accessing the web user interface.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
HTTP is an application protocol that runs on top of the TCP/IP suite of protocols. HTTPS is
a web protocol that encrypts and decrypts user page requests as well as pages
returned by the web server. Both HTTP and HTTPS port numbers are configurable.
Procedure
Web server type can be configured using the configuration files or locally.
Configure the web access type,
Configuration File
<y0000000000xx>.cfg
HTTP port and HTTPS port.
For more information, refer to
Web Server Type on page 326.
Configure the web access type,
HTTP port and HTTPS port.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
Local
et?p=network-adv&q=load
Phone User Interface
Configure the web access type,
HTTP port and HTTPS port.
To configure web server type via web user interface:
1.
Click on Network->Advanced.
2.
Select the desired value from the pull-down list of HTTP.
3.
Enter the HTTP port number in the HTTP Port (1~65535) field.
The default HTTP port number is 80.
4.
118
Select the desired value from the pull-down list of HTTPS.
Configuring Basic Features
5.
Enter the HTTPS port number in the HTTPS Port (1~65535) field.
The default HTTPS port number is 443.
6.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
7.
Click OK to reboot the IP phone.
To configure web server type via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin)
->Network->Webserver Type.
2.
Press
or
, or the Switch soft key to select the desired value from the HTTP
Status field.
3.
Enter the HTTP port number in the HTTP Port field.
4.
Press
or
, or the Switch soft key to select the desired value from the HTTPS
Status field.
5.
Enter the HTTPS port number in the HTTPS Port field.
6.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of time.
Calling line identification presentation (CLIP) allows IP phones to display the caller
identity, derived from a SIP header contained in the INVITE message when receiving an
incoming call. IP phones support deriving caller identity from three types of SIP header:
From, P-Asserted-Identity and Remote-Party-ID. Identity presentation is based on the
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
identity in the relevant SIP header.
If the caller has existed in the local directory, the local name assigned to the caller
should be preferentially displayed.
Procedure
CLIP can be configured using the configuration files or locally.
Configure the presentation of
the caller identity.
Configuration File
<MAC>.cfg
For more information, refer to
Calling Line Identification
Presentation on page 327.
Configure the presentation of
the caller identity.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
c=0
To configure the presentation of the caller identity via web user interface:
120
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of the Caller ID Source.
Configuring Basic Features
5.
Click Confirm to accept the change.
Connected line identification presentation (COLP) allows IP phones to display the
identity of the callee specified for outgoing calls. IP phones can display the Dialed Digits,
or the identity in a SIP header (Remote-Party-ID or P-Asserted-Identity) received, or the
identity in the From header carried in the UPDATE message sent by the callee as
described in RFC 4916.
If the callee has existed in the directory, the local name assigned to the callee should be
preferentially displayed.
Procedure
COLP can be configured only using the configuration files.
Configure the presentation of
the callee’s identity.
Configuration File
<MAC>.cfg
For more information, refer to
Connected Line Identification
Presentation on page 328.
DTMF (Dual Tone Multi-frequency), better known as touch-tone, is used for
telecommunication signaling over analog telephone lines in the voice-frequency band.
DTMF is the signal sent from the IP phone to the network, which is generated when
pressing the IP phone’s keypad during a call. Each key pressed on the IP phone
generates one sinusoidal tone of two frequencies. One is generated from a high
frequency group and the other from a low frequency group.
The DTMF keypad is laid out in a 4× 4 matrix, with each row representing a low
frequency, and each column representing a high frequency. Pressing a digit key (such
as '1') will generate a sinusoidal tone for each of two frequencies (697 and 1209 hertz
(Hz)).
DTMF Keypad Frequencies:
1209 Hz
1336 Hz
1447 Hz
1633 Hz
697 Hz
1
2
3
A
770 Hz
4
5
6
B
852 Hz
7
8
9
C
941 Hz
*
0
#
D
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Three methods of transmitting DTMF digits on SIP calls:

RFC 2833 -- DTMF digits are transmitted by RTP Events compliant to RFC 2833.

INBAND -- DTMF digits are transmitted in the voice band.

SIP INFO -- DTMF digits are transmitted by SIP INFO messages.
The method of transmitting DTMF digits is configurable on a per-line basis.
RFC 2833
DTMF digits are transmitted using the RTP Event packets that are sent along with the
voice path. These packets use RFC 2833 format and must have a payload type that
matches what the other end is listening for. The payload type for RTP Event packets is
configurable. IP phones default to 101 for the payload type, which use the definition to
negotiate with the other end during call establishment.
The RTP Event packet contains 4 bytes. The 4 bytes are distributed over several fields
denoted as Event, End bit, R-bit, Volume and Duration. If the End bit is set to 1, the
packet contains the end of the DTMF event. You can configure the sending times of the
end RTP Event packet.
INBAND
DTMF digits are transmitted within the audio of the IP phone conversation. It uses the
same codec as your voice and is audible to conversation partners.
SIP INFO
DTMF digits are transmitted by the SIP INFO messages when the voice stream is
established after a successful SIP 200 OK-ACK message sequence. The SIP INFO
message is sent along the signaling path of the call. The SIP INFO message can support
transmitting DTMF digits in three ways: DTMF, DTMF-Relay and Telephone-Event.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure the method of
transmitting DTMF digit and the
<MAC>.cfg
payload type.
For more information, refer to
DTMF on page 329.
Configuration File
Configure the number of times
for the IP phone to send the end
<y0000000000xx>.cfg
RTP Event packet.
For more information, refer to
DTMF on page 329.
122
Configuring Basic Features
Configure the method of
transmitting DTMF digits and
the payload type.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
Local
Web User Interface
c=0
Configure the number of times
for the IP phone to send the end
RTP Event packet.
Navigate to:
http://<phoneIPAddress>/servl
et?p=features-general&q=loa
d
To configure the method of transmitting DTMF digits via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of DTMF Type.
5.
If SIP INFO or AUTO or SIP INFO is selected, select the desired value from the
pull-down list of DTMF Info Type.
6.
Enter the desired value in the DTMF Payload Type (96~127) field.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
7.
Click Confirm to accept the change.
To configure the number of times to send the end RTP Event packet via web user
interface:
1.
Click on Features->General Information.
2.
Select the desired value (1-3) from the pull-down list of DTMF Repetition.
3.
Click Confirm to accept the change.
Suppress DTMF display allows IP phones to suppress the display of DTMF digits. DTMF
digits are displayed as “*” on the LCD screen. Suppress DTMF display delay defines
whether to display the DTMF digits for a short period of time before displaying as “*”.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure suppress DTMF
display and suppress DTMF
Configuration File
<y0000000000xx>.cfg
display delay.
For more information, refer to
Suppress DTMF Display on
page 331.
Local
124
Web User Interface
Configure suppress DTMF
display and suppress DTMF
Configuring Basic Features
display delay.
Navigate to:
http://<phoneIPAddress>/servl
et?p=features-general&q=loa
d
To configure suppress DTMF display and suppress DTMF display delay via web user
interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Suppress DTMF Display.
3.
Select the desired value from the pull-down list of Suppress DTMF Display Delay
(not applicable to SIP-T20P IP phones).
4.
Click Confirm to accept the change.
Call transfer is implemented via DTMF on some traditional servers. The IP phone sends
specified DTMF digits to the server for transferring calls to third parties.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure transfer via DTMF.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Transfer via DTMF on page 331.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Configure transfer via DTMF.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servl
et?p=features-general&q=loa
d
To configure transfer via DTMF via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of DTMF Replace Tran.
3.
Enter the specified DTMF digits in the Tran Send DTMF field.
4.
Click Confirm to accept the change.
Intercom allows establishing an audio conversation directly. The IP phone can answer
intercom calls automatically. This feature depends on support from a SIP server.
Intercom is a useful feature in office environments to quickly connect with an operator or
secretary. Users can press an intercom key to automatically initiate an outgoing
intercom call with a remote extension. This feature is not applicable to SIP-T19P IP
phones.
126
Configuring Basic Features
Procedure
Intercom key can be configured using the configuration files or locally.
Assign an intercom key.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Intercom Key on page 415.
Assign an intercom key.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=dsskey&q=load&model=0
Phone User Interface
Assign an intercom key.
To configure an intercom key via web user interface:
1.
Click on DSSKey->Memory Key (or Line Key).
2.
In the desired DSS key field, select Intercom from the pull-down list of Type.
3.
Enter the remote extension number in the Value field.
4.
Select the desired line from the pull-down list of Line.
5.
Click Confirm to accept the change.
To configure an intercom key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
4.
Select the desired line from the Account ID field.
5.
Enter the remote extension number in the Value field.
6.
Press the Save soft key to accept the change.
or
, or the Switch soft key to select Intercom from the Type field.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The IP phone can process incoming calls differently depending on settings. There are
four configuration options for incoming intercom calls:
Accept Intercom
Accept Intercom allows the IP phone to automatically answer an incoming intercom call.
Intercom Mute
Intercom Mute allows the IP phone to mute the microphone for incoming intercom calls.
Intercom Tone
Intercom Tone allows the IP phone to play a warning tone before answering an intercom
call.
Intercom Barge
Intercom Barge allows the IP phone to automatically answer an incoming intercom call
while an active call is in progress. The active call will be placed on hold.
Procedure
Incoming intercom calls can be configured using the configuration files or locally.
Configure incoming intercom call
feature.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Incoming Intercom calls on page
332.
Configure incoming intercom call
feature.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=features-intercom&q=load
Phone User Interface
To configure intercom via web user interface:
1.
128
Click on Features->Intercom.
Configure incoming intercom call
feature.
Configuring Basic Features
2.
Select the desired values from the pull-down lists of Accept Intercom, Intercom
Mute, Intercom Tone and Intercom Barge.
3.
Click Confirm to accept the change.
To configure intercom via phone user interface:
1.
Press Menu->Features->Intercom.
2.
Press
or
, or the Switch soft key to select the desired values from the
Accept Intercom, Intercom Mute, Intercom Tone and Intercom Barge fields.
3.
Press the Save soft key to accept the change.
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130
Configuring Advanced Features
This chapter provides information for making configuration changes for the following
advanced features:

Distinctive Ring Tones

Tones

Remote Phone Book

LDAP

Busy Lamp Field

Music on Hold

Automatic Call Distribution

Message Waiting Indicator

Multicast Paging

Call Recording

Hot Desking

Action URL

Action URI

Server Redundancy

LLDP

VLAN

VPN

Quality of Service

Network Address Translation

802.1X Authentication

TR-069 Device Management

IPv6 Support
Distinctive ring tones allows certain incoming calls to trigger IP phones to play distinctive
ring tones. The IP phone inspects the INVITE request for an "Alert-Info" header when
receiving an incoming call. If the INVITE request contains an "Alert-Info" header, the IP
phone strips out the URL and keyword parameter and maps them to the appropriate
ring tone.
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Alert-Info headers in the following two formats:
Alert-Info: http://localIP/Bellcore-drN
Alert-Info: <URL>;info=info text;x-line-id=0

If the Alter-Info header contains the keyword “Bellcore-drN”, the IP phone will play
the Bellcore-drN ring tone (N=1, 2, 3, 4 or 5) (if the parameter
“features.alert_info_tone” is set to 1).
Example:
Alert-Info: http://127.0.0.1/Bellcore-dr1
The following table identifies the different Bellcore ring tone patterns and
cadences (These ring tones are designed for the BroadWorks server).
Bellcore
Pattern
Tone
ID
Bellcore-dr1
(standard)
Bellcore-dr2
1
2
Pattern
Cadence
4s Off
3600
4000
4400
Ringing
Long
630
800
1025
315
400
525
630
800
1025
3475
4000
4400
315
400
525
145
200
525
315
400
525
145
200
525
630
800
1025
2975
4000
4400
200
300
525
145
200
525
800
1000
1100
145
200
525
200
300
525
Silent
2975
4000
4400
Ringing
450
500
550
Silent
Ringing
Long
Short
Ringing
Short
Silent
Long
Short
Silent
Ringing
132
Long
Silent
Ringing
Note
(ms)
Silent
Ringing
5
(ms)
2200
Silent
Bellcore-dr5
(ms)
2000
Ringing
4
Duration
1800
Silent
Bellcore-dr4
Maximum
Duration
2s On
Ringing
3
Nominal
Duration
Ringing
Silent
Bellcore-dr3
Minimum
Short
“Bellcore-dr5” is a ring splash tone that reminds the user that the DND or Always Call
Forward feature is enabled on the server side.
Configuring Advanced Features

If the Alert-Info header contains a remote URL, the IP phone will try to download the
WAV ring tone file from the URL and then play the remote ring tone (if the
parameter “account.X.alert_info_url_enable” is set to 1). If it fails to download the
file, the IP phone will play the local ring tone associated with info text. If there is no
text matched, the IP phone will play the preconfigured local ring tone in about ten
seconds.
Example:
Alert-Info: http:<//192.168.0.12:8080/ring.wav>/info=family;x-line-id=0
Procedure
Distinctive ring tones can be configured using the configuration files or locally.
Configure distinctive ring tones.
<MAC>.cfg
For more information, refer to
Distinctive Ring Tones on page
334.
Configuration File
Configure the internal ringer
text and internal ringer file.
<y0000000000xx>.cfg
For more information, refer to
Distinctive Ring Tones on page
334.
Configure distinctive ring tones.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-adv&q=load&ac
Local
Web User Interface
c=0
Configure the internal ringer
text and internal ringer file.
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-ring&q=load
To configure distinctive ring tones via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
4.
Select the desired value from the pull-down list of Distinctive Ring Tones.
5.
Click Confirm to accept the change.
To configure the internal ringer text and internal ringer file via web user interface:
1.
Click on Settings->Ring.
2.
Enter the keywords in the Internal Ringer Text fields.
3.
Select the desired ring tones for each text from the pull-down lists of Internal Ringer
File.
134
Configuring Advanced Features
4.
Click Confirm to accept the change.
When receiving a message, the IP phone will play a warning tone. You can customize
tones or select specialized tone sets (vary from country to country) to indicate different
conditions of the IP phone. The default tones used on IP phones are the US tone sets.
Available tone sets for IP phones:

Australia

Austria

Brazil

Belgium

China

Czech

Denmark

Finland

France

Germany

Great Britain

Greece

Hungary

Lithuania

India

Italy

Japan

Mexico

New Zealand

Netherlands

Norway

Portugal

Spain

Switzerland

Sweden

Russia

United States
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones

Chile

Czech ETSI
Configured tones can be heard on IP phones for the following conditions.
Condition
Description
Dial
When in the pre-dialing interface
Ring Back
Ring-back tone
Busy
When the callee is busy
Congestion
When the network is congested
Call Waiting
Call waiting tone
Dial Recall
When receiving a call back
Info
When receiving a special message
Stutter
When receiving a voice mail
Message
Auto Answer
When receiving a text message
Note: It is not applicable to SIP-T20P IP phones.
When automatically answering a call
Procedure
Tones can be configured using the configuration files or locally.
Configure the tones for the IP
Configuration File
<y0000000000xx>.cfg
phone.
For more information, refer to
Tones on page 336.
Configure the tones for the IP
phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-tones&q=load
To configure tones via web user interface:
1.
136
Click on Settings->Tones.
Configuring Advanced Features
2.
Select the desired type from the pull-down list of Select Country.
If you select Custom, you can customize a tone for each condition of the IP phone.
3.
Click Confirm to accept the change.
Remote phone book is a centrally maintained phone book, stored on the remote server.
Users only need the access URL of the remote phone book. The IP phone can establish a
connection with the remote server and download the phone book, and then display the
remote phone book entries on the phone user interface. IP phones support up to 5
remote phone books. SIP-T28/T26P/T22P IP phones support up to 2500 remote phone
book entries. SIP-T21P/T19P IP phones support up to 2000 remote phone book entries.
Remote phone book is customizable. For more information, refer to Remote XML Phone
Book on page 234.
Search Remote Phonebook Name allows IP phones to search the entry names from the
remote phone book when receiving incoming calls. Search Flash Time defines how
often IP phones refresh the local cache of the remote phone book.
Note
Remote phone book is not applicable to SIP-T20P IP phones.
Procedure
Remote phone book can be configured using the configuration files or locally.
Specify the access URL of the
remote phone book.
Configuration File
<y0000000000xx>.cfg
Specify whether to query the
entry name from the remote
phone book when the IP phone
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receives an incoming call.
Specify how often the IP phone
refreshes the local cache of the
remote phone book.
For more information, refer to
Remote Phone Book on page
338.
Specify the access URL of the
remote phone book.
Navigate to:
http://<phoneIPAddress>/servl
et?p=contacts-remote&q=load
Specify whether to query the
entry name from the remote
Local
Web User Interface
phone book when the IP phone
receives an incoming call.
Specify how often the IP phone
refreshes the local cache of the
remote phone book.
Navigate to:
http://<phoneIPAddress>/servl
et?p=contacts-remote&q=load
To specify access URL of the remote phone book via web user interface:
138
1.
Click on Directory->Remote Phone Book.
2.
Enter the access URL in the Remote URL field.
3.
Enter the name in the Display Name field.
4.
Click Confirm to accept the change
Configuring Advanced Features
To configure Search Remote Phonebook Name and Search Flash Time via web user
interface:
1.
Click on Directory->Remote Phone Book.
2.
Select the desired value from the pull-down list of Search Remote Phonebook
Name.
3.
Enter the desired time in the Search Flash Time (Seconds) field.
4.
Click Confirm to accept the change.
LDAP (Lightweight Directory Access Protocol) is an application protocol for accessing
and maintaining information services for the distributed directory over an IP network. IP
phones can be configured to interface with a corporate directory server that supports
LDAP version 2 or 3 (Microsoft’s Active Directory is included).
The biggest plus for LDAP is that users can access the central LDAP directory of the
corporation using IP phones, therefore they do not have to maintain the directory locally.
Users can search and dial out from the LDAP directory, and save LDAP entries to the
local directory. LDAP entries displayed on the IP phone are read only, which cannot be
added, edited or deleted by users. When an LDAP server is properly configured, the IP
phone can look up entries from the LDAP server in a wide variety of ways. The LDAP
server indexes all the data in its entries, and “filters” can be used to select the desired
entry or group, and return the desired information.
Configurations on the IP phone limit the amount of the displayed entries when querying
from the LDAP server, and decide how attributes are displayed and sorted.
Note
LDAP feature is not applicable to SIP-T19P and SIP-T20P IP phones.
You can set a DSS key to be an LDAP key, and then press the LDAP key to enter the LDAP
search screen when the IP phone is idle.
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LDAP Attributes
The following table lists the most common attributes used to configure the LDAP lookup
on IP phones.
Abbreviation
Name
Description
gn
givenName
First name
cn
commonName
sn
surname
dn
distinguishedName
dc
dc
-
company
-
telephoneNumber
mobile
mobilephoneNumber
ipPhone
IPphoneNumber
LDAP attribute is made up from
given name joined to surname.
Last name or family name
Unique identifier for each entry
Domain component
Company or organization name
Office phone number
Mobile or cellular phone number
Home phone number
Procedure
LDAP can be configured using the configuration files or locally.
Configure LDAP.
For more information, refer to
Configuration File
<y0000000000xx>.cfg
LDAP on page 340.
Assign an LDAP key.
For more information, refer to
LDAP Key on page 416.
Configure LDAP.
Navigate to:
http://<phoneIPAddress>/servl
et?p=contacts-LDAP&q=load
Local
Web User Interface
Assign an LDAP key.
Navigate to:
http://<phoneIPAddress>/servl
et?p=dsskey&q=load&model=
0
Phone User Interface
To configure LDAP via web user interface:
1.
140
Click on Directory->LDAP.
Assign an LDAP key.
Configuring Advanced Features
2.
Enter the values in the corresponding fields.
3.
Select the desired values from the corresponding pull-down lists.
4.
Click Confirm to accept the change.
To configure an LDAP key via web user interface:
1.
Click on DSSKey->Memory Key (Line Keys or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones
only support line keys and programable keys.
2.
In the desired DSS key field, select LDAP from the pull-down list of Type.
3.
Click Confirm to accept the change.
To configure an LDAP key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
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3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select LDAP from the Key Type field.
5.
Press the Save soft key to accept the change.
Busy Lamp Field (BLF) is used to monitor a specific user for status changes on IP phones.
For example, you can configure a BLF key on a supervisor’s phone to monitor the phone
user status (busy or idle). When the monitored user places a call, a busy indicator on the
supervisor’s phone indicates that the user’s phone is in use.
When the monitored user is idle, the supervisor presses the BLF key to dial out the phone
number. When the monitored user receives an incoming call, the supervisor presses the
BLF key to pick up the call directly. When the monitored user is in a call, the supervisor
presses the BLF key to interrupt and set up a conference call.
Note
BLF feature is not applicable to SIP-T19P IP phones.
Visual Alert and Audio Alert for BLF Pickup
Visual and audio alert for BLF pickup allow the supervisor’s phone to play an alert tone
and display a visual prompt (e.g., “6001<-6002”, 6001 is the monitored extension which
receives an incoming call from 6002) when the monitored user receives an incoming call.
In addition to the BLF key, visual alert for BLF pickup feature enables the supervisor to
pick up the monitored user’s incoming call by pressing the Pickup soft key. The directed
call pickup code must be configured in advance. For more information on how to
configure the directed call pickup code for the Pickup soft key, refer to Directed Call
Pickup on page 107.
Note
Visual alert for BLF pickup feature is not applicable to SIP-T20P IP phones.
BLF LED Mode
BLF LED Mode provides four kinds of definition for the BLF key LED status. The following
table lists the LED statuses of the BLF key when BLF LED Mode is set to 0, 1, 2 or 3
respectively. The default value of BLF LED mode is 0.
Line key LED (configured as a BLF key and BLF LED Mode is set to 0)
LED Status
Solid green
The monitored user is idle.
Fast flashing green (200ms)
The monitored user receives an incoming call.
Slow flashing green (500ms)
142
Description
The monitored user is dialing.
The monitored user is talking.
Configuring Advanced Features
LED Status
Description
The monitored user’s conversation is placed on
hold.
Slow flashing green (1s)
Off
The call is parked against the monitored user’s
phone number.
The monitored user does not exist.
Memory key LED (configured as a BLF key and BLF LED Mode is set to 0)
LED Status
Description
Solid green
The monitored user is idle.
Fast flashing red (200ms)
The monitored user receives an incoming call.
Solid red
The monitored user is dialing.
The monitored user is talking.
The call is parked against the monitored user’s
Slow flashing red (1s)
phone number.
The monitored user’s conversation is placed on
hold.
Off
The monitored user does not exist.
Line key LED (configured as a BLF key and BLF LED Mode is set to 1)
LED Status
Description
Fast flashing green (200ms)
The monitored user receives an incoming call.
Solid green
Slow flashing green (500ms)
Slow flashing green (1s)
Off
The monitored user is dialing.
The monitored user is talking.
The monitored user’s conversation is placed on
hold.
The call is parked against the monitored user’s
phone number.
The monitored user is idle.
The monitored user does not exist.
Memory key LED (configured as a BLF key and BLF LED Mode is set to 1)
LED Status
Description
Fast flashing red (200ms)
The monitored user receives an incoming call.
Solid red
The monitored user is dialing.
The monitored user is talking.
The call is parked against the monitored user’s
Slow flashing red (1s)
phone number.
The monitored user’s conversation is placed on
hold.
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LED Status
Off
Description
The monitored user is idle.
The monitored user does not exist.
Line key LED (configured as a BLF key and BLF LED Mode is set to 2)
LED Status
Description
Fast flashing green (200ms)
The monitored user receives an incoming call.
The monitored user is dialing.
Slow flashing green (500ms)
The monitored user is talking.
The monitored user’s conversation is placed on
hold.
Slow flashing green (1s)
Off
The call is parked against the monitored user’s
phone number.
The monitored user is idle.
The monitored user does not exist.
Memory key LED (configured as a BLF key and BLF LED Mode is set to 2)
LED Status
Description
Fast flashing red (200ms)
The monitored user receives an incoming call.
Solid red
The monitored user is dialing.
The monitored user is talking.
The call is parked against the monitored user’s
Slow flashing red (1s)
phone number.
The monitored user’s conversation is placed on
hold.
Off
The monitored user is idle.
The monitored user does not exist.
Line key LED (configured as a BLF key and BLF LED Mode is set to 3)
LED Status
Description
Fast flashing green (200ms)
The monitored user receives an incoming call.
The monitored user is dialing.
Solid green
The monitored user is talking.
The monitored user’s conversation is placed on
hold.
Slow flashing green (1s)
Off
144
The call is parked against the monitored user’s
phone number.
The monitored user is idle.
The monitored user does not exist.
Configuring Advanced Features
Memory key LED (configured as a BLF key and BLF LED Mode is set to 3)
LED Status
Description
Fast flashing red (200ms)
The monitored user receives an incoming call.
The monitored user is dialing.
Solid red
The monitored user is talking.
The monitored user’s conversation is placed on
hold.
Slow flashing red (1s)
Off
The call is parked against the monitored user’s
phone number.
The monitored user is idle.
The monitored user does not exist.
Procedure
BLF can be configured using the configuration files or locally.
Specify whether to use visual
alert and audio alert for BLF
<MAC>.cfg
pickup.
For more information, refer to
BLF on page 346.
Configuration File
Assign a BLF key.
For more information, refer to
y0000000000xx.cfg
BLF Key on page 417.
Configure BLF LED mode.
For more information, refer to
BLF on page 346.
Assign a BLF key.
Navigate to:
http://<phoneIPAddress>/servl
et?p=dsskey&q=load&model=
0
Specify whether to use visual
Local
Web User Interface
alert and audio alert for BLF
pickup.
Navigate to:
http://<phoneIPAddress>/servl
et?p=features-callpickup&q=lo
ad
Configure BLF LED mode.
Navigate to:
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
http://<phoneIPAddress>/servl
et?p=features-general&q=loa
d
Phone User Interface
Assign a BLF key.
To configure a BLF key via web user interface:
1.
Click on DSSKey->Memory Key (or Line Key).
2.
In the desired DSS key field, select BLF from the pull-down list of Type.
3.
Enter the phone number or extension you want to monitor in the Value field.
4.
Select the desired line from the pull-down list of Line.
5.
(Optional.) Enter the directed call pickup code in the Extension field.
6.
Click Confirm to accept the change.
To configure visual alert and audio alert for BLF pickup via web user interface:
146
1.
Click on Features->Call Pickup.
2.
Select the desired value from the pull-down list of Visual Alert for BLF Pickup.
Configuring Advanced Features
3.
Select the desired value from the pull-down list of Audio Alert for BLF Pickup.
4.
Click Confirm to accept the change.
To configure BLF LED mode via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of BLF LED Mode.
3.
Click Confirm to accept the change.
To configure a BLF key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
3.
Press
or
, or the Switch soft key to select BLF from the Type field.
4.
Press
or
, or the Switch soft key to select the desired line from the Account
ID field.
5.
Enter the phone number or extension you want to monitor in the Value field.
6.
(Optional.) Enter the directed call pickup code in the Extension field.
7.
Press the Save soft key to accept the change.
Music on Hold (MoH) is the business practice of playing recorded music to fill the
silence that would be heard by the party who has been placed on hold. To use this
feature, specify a SIP URI pointing to an MoH server account. When a call is placed on
hold, the IP phone will send an INVITE message to the specified MoH server account
according to the SIP URI. The MoH server account automatically responds to the INVITE
message and immediately plays audio from some source located anywhere (LAN,
Internet) to the held party.
Procedure
Music on hold can be configured using the configuration files or locally.
Configure MoH on a per-line
Configuration File
<MAC>.cfg
basis.
For more information, refer to
Music on Hold on page 348.
Configure MoH on a per-line
basis.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
To configure MoH via web user interface:
148
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
Configuring Advanced Features
4.
Enter the SIP URI (e.g., sip:moh@sip.com) in the Music Server URI field.
5.
Click Confirm to accept the change.
Automatic Call Distribution (ACD) enables organizations to manage a large number of
phone calls on an individual basis. ACD enables the use of IP phones in a call-center
role by automatically distributing incoming calls to available users, or agents. ACD
depends on support from a SIP server. ACD is disabled on the phone by default. You
need to enable it on a per-line basis before logging into the ACD system.
After the IP phone user logs into the ACD system, the server monitors the phone status
and then decides whether to assign an incoming call to the user’s IP phone. When the
phone status is changed to unavailable, the server stops distributing calls to the IP
phone. The IP phone will remain in the unavailable status until the user manually
changes the phone status or the ACD auto available timer (if configured) expires. How
long the IP phone remains unavailable is configurable by auto-available timer. When
the timer expires, the phone status is automatically changed to available. ACD auto
available feature depends on support from a SIP server.
You need to configure an ACD key for the user to log into the ACD system. The ACD key
LED on the IP phone indicates the ACD status.
Note
SIP-T19P IP phones support ACD feature for BroadSoft server only. For more information,
refer to Yealink IP Phones Deployment Guide for BroadSoft UC-One Environments.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Procedure
ACD can be configured using the configuration files or locally.
Assign an ACD key.
For more information, refer to
Configuration File
<y0000000000xx>.cfg
ACD Key on page 419.
Configure ACD auto available.
For more information, refer to
ACD on page 348.
Assign an ACD key.
Navigate to:
http://<phoneIPAddress>/servlet
Local
Web User Interface
?p=dsskey&q=load&model=0
Configure ACD auto available.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-acd&q=load
Phone User Interface
Assign an ACD key.
To configure an ACD key via web user interface:
1.
Click on DSSKey->Memory Key (or Line Key).
2.
In the desired DSS key field, select ACD from the pull-down list of Type.
3.
Click Confirm to accept the change.
To configure ACD auto available via web user interface:
150
1.
Click on Features->ACD.
2.
Select the desired line from the pull-down list of ACD Auto Available.
Configuring Advanced Features
3.
Enter the desired time in ACD Auto Available Timer (0~120s) field.
4.
Click Confirm to accept the change.
To configure an ACD key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
4.
Press the Save soft key to accept the change.
or
, or the Switch soft key to select ACD from the Type field.
Message Waiting Indicator (MWI) informs users of the number of messages waiting in
their mailbox without calling the mailbox. IP phones support both audio and visual MWI
when receiving new voice messages.
IP phones support both solicited and unsolicited MWI. Unsolicited MWI is a server
related feature.
The IP phone sends a SUBSCRIBE message to the server for message-summary updates.
The server sends a message-summary NOTIFY within the subscription dialog each time
the MWI status changes. For solicited MWI, you must enable MWI subscription feature
on IP phones. IP phones support subscribing the MWI messages to the account or the
voice mail number.
IP phones do not need to subscribe for message-summary updates. The server
automatically sends a message-summary NOTIFY in a new dialog each time the MWI
status changes.
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Procedure
Configuration changes can be performed using the configuration files or locally.
Configure subscribe for MWI.
Configure subscribe MWI to voice
Configuration File
<MAC>.cfg
mail.
For more information, refer to
Message Waiting Indicator on
page 348.
Configure subscribe for MWI.
Configure subscribe MWI to voice
mail.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
To configure subscribe for MWI via web user interface:
152
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of Subscribe for MWI.
5.
Enter the period time in the MWI Subscription Period (Seconds) field.
Configuring Advanced Features
6.
Click Confirm to accept the change.
To configure subscribe MWI to voice mail via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of Subscribe MWI To Voice Mail.
5.
Enter the desired voice number in the Voice Mail field.
6.
Click Confirm to accept the change.
Multicast paging allows IP phones to send/receive Real-time Transport Protocol (RTP)
streams to/from the pre-configured multicast address(es) without involving SIP signaling.
Up to 10 listening multicast addresses can be specified on the IP phone.
Users can send an RTP stream without involving SIP signaling by pressing a configured
multicast paging key. A multicast address (IP: Port) should be assigned to the multicast
paging key, which is defined to transmit RTP stream to a group of designated IP phones.
When the IP phone sends the RTP stream to a pre-configured multicast address, each IP
phone preconfigured to listen to the multicast address can receive the RTP stream.
When the originator stops sending the RTP stream, the subscribers stop receiving it. This
feature is not applicable to SIP-T19P IP phones.
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Procedure
Configuration changes can be performed using the configuration files or locally.
Assign a multicast paging key.
For more information, refer to
Multicast Paging Key on page
Configuration File
<y0000000000xx>.cfg
419.
Specify a multicast codec for the
IP phone to use for multicast RTP.
For more information, refer to
Sending RTP Stream on page 351.
Assign a multicast paging key.
Navigate to:
http://<phoneIPAddress>/servlet
?p=dsskey&q=load&model=0
Local
Web User Interface
Specify a multicast codec for the
IP phone to use for multicast RTP.
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
Phone User Interface
Assign a multicast paging key.
To configure a multicast paging key via web user interface:
1.
Click on DSSKey->Memory Key (or Line Key).
2.
In the desired DSS key field, select Multicast Paging from the pull-down list of Type.
3.
Enter the multicast IP address and port number in the Value field.
The valid multicast IP addresses range from 224.0.0.0 to 239.255.255.255.
4.
154
Click Confirm to accept the change.
Configuring Advanced Features
To configure a codec for multicast paging via web user interface:
1.
Click on Features->General Information.
2.
Select the desired codec from the pull-down list of Multicast Codec.
3.
Click Confirm to accept the change.
To configure a multicast paging key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Multicast Paging from the Key
Type field.
5.
Enter the multicast IP address and port number in the Value field.
6.
Press the Save soft key to accept the change.
IP phones can receive an RTP stream from the pre-configured multicast address(es)
without involving SIP signaling, and can handle the incoming multicast paging calls
differently depending on the configurations of Paging Barge and Paging Priority Active.
Paging Barge
This parameter defines the priority of the voice call in progress, and decides how the IP
phone handles the incoming multicast paging calls when there is already a voice call in
progress. If the parameter is configured as disabled, all incoming multicast paging calls
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will be automatically ignored. If the parameter is the priority value, the incoming
multicast paging calls with higher priority are automatically answered and the ones
with lower priority are ignored.
Paging Priority Active
This parameter decides how the IP phone handles the incoming multicast paging calls
when there is already a multicast paging call in progress. If the parameter is configured
as disabled, the IP phone will automatically ignore all incoming multicast paging calls. If
the parameter is configured as enabled, an incoming multicast paging call with higher
priority is automatically answered, and the one with lower priority is ignored.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure the listening multicast
address.
Configure Paging Barge and
Configuration File
<y0000000000xx>.cfg
Paging Priority Active features.
For more information, refer to
Receiving RTP Stream on page
352.
Configure the listening multicast
address.
Configure Paging Barge and
Local
Web User Interface
Paging Priority Active features.
Navigate to:
http://<phoneIPAddress>/servlet
?p=contacts-multicastIP&q=load
To configure a listening multicast address via web user interface:
1.
Click on Directory->Multicast IP.
2.
Enter the listening multicast address and port number in the Listening Address field.
1 is the highest priority and 10 is the lowest priority.
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Configuring Advanced Features
3.
Enter the label in the Label field.
The label will appear on the LCD screen when receiving the RTP multicast.
4.
Click Confirm to accept the change.
To configure paging barge and paging priority active features via web user interface:
1.
Click on Directory->Multicast IP.
2.
Select the desired value from the pull-down list of Paging Barge.
3.
Select the desired value from the pull-down list of Paging Priority Active.
4.
Click Confirm to accept the change.
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Call recording enables users to record calls. It depends on support from a SIP server.
When the user presses the call record key, the IP phone sends a record request to the
server. IP phones themselves do not have memory to store the recording, what they can
do is to trigger the recording and indicate the recording status.
Normally, there are 2 main methods to trigger a recording on a certain server. We call
them record and URL record. Record is for the IP phone to send the server a SIP INFO
message containing a specific header. URL record is for the IP phone to send the server
an HTTP GET message containing a specific URL. The server processes these messages
and decides to start or stop a recording.
Note
Call recording is not applicable to SIP-T19P IP phones.
Record
When a user presses a record key for the first time during a call, the IP phone sends a
SIP INFO message to the server with the specific header “Record: on”, and then the
recording starts.
Example of a SIP INFO message:
Via: SIP/2.0/UDP 10.1.4.148:5063;branch=z9hG4bK1139980711
From: "827" <sip:827@192.168.1.199>;tag=2066430997
To:<sip:614@192.168.1.199>;tag=371745247
Call-ID: 1895019940@10.1.4.148
CSeq: 2 INFO
Contact: <sip:827@10.1.4.148:5063>
Max-Forwards: 70
User-Agent: Yealink SIP-T28P 2.72.0.1
Record: on
Content-Length: 0
When the user presses the record key for the second time, the IP phone sends a SIP
INFO message to the server with the specific header “Record: off”, and then the
recording stops.
Example of a SIP INFO message:
Via: SIP/2.0/UDP 10.1.4.148:5063;branch=z9hG4bK1619489730
From: "827" <sip:827@192.168.1.199>;tag=1831694891
To:<sip:614@192.168.1.199>;tag=2228378244
Call-ID: 1051886688@10.1.4.148
CSeq: 3 INFO
Contact: <sip:827@10.1.4.148:5063>
Max-Forwards: 70
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Configuring Advanced Features
User-Agent: Yealink SIP-T28P 2.72.0.1
Record: off
Content-Length: 0
URL Record
When a user presses a URL record key for the first time during a call, the IP phone sends
an HTTP GET message to the server.
Example of an HTTP GET message:
Get /phonerecording.cgi?model=yealink HTTP/1.0\r\n
Request Method: GET
Request URI: /phonerecording.cgi?model=yealink
Request version: HTTP/1.0
Host: 10.1.2.224\r\n
User-agent: yealink SIP-T28P 2.72.0.1 00:16:65:11:30:68\r\n
If the recording is successfully started, the server will respond with a 200 OK message.
Example of a 200 OK message:
<YealinkIPPhoneText>
<Title>
</Title>
<Text>
The recording session is successfully started.
</Text>
<YealinkIPPhoneText>
If the recording fails for some reasons, for example, the recording box is full, the server
will respond with a 200 OK message.
Example of a 200 OK message:
<YealinkIPPhoneText>
<Title>
</Title>
<Text>
Probably the recording box is full.
</Text>
<YealinkIPPhoneText>
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When the user presses the URL record key for the second time, the IP phone sends an
HTTP GET message to the server, and then the server will respond with a 200 OK
message.
Example of a 200 OK message:
<YealinkIPPhoneText>
<Title>
</Title>
<Text>
The recording session is successfully stopped.
</Text>
<YealinkIPPhoneText>
Procedure
Call recording key can be configured using the configuration files or locally.
Assign a record key.
For more information, refer to
Configuration File
<y0000000000xx>.cfg
Record Key on page 420.
Assign a URL record key.
For more information, refer to URL
Record Key on page 421.
Assign a record key and URL
record key.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
Local
?p=dsskey&q=load&model=0
Phone User Interface
To configure a record key via web user interface:
1.
160
Click on DSSKey->Memory Key (or Line Key).
Assign a record key and URL
record key.
Configuring Advanced Features
2.
In the desired DSS key field, select Record from the pull-down list of Type.
3.
Click Confirm to accept the change.
To configure a URL record key via web user interface:
1.
Click on DSSKey->Memory Key (or Line Key).
2.
In the desired DSS key field, select URL Record from the pull-down list of Type.
3.
Enter the URL in the Value field.
4.
Click Confirm to accept the change.
To configure a record key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Record from the Key Type field.
5.
Press the Save soft key to accept the change.
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To configure a URL record key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
4.
Enter the URL in the Value field.
5.
Press the Save soft key to accept the change.
or
, or the Switch soft key to select URL Record from the Type field.
Hot desking originates from the definition of being the temporary physical occupant of
a work station or surface by a particular employee. A primary motivation for hot
desking is cost reduction. Hot desking is regularly used in places where not all
employees are in the office at the same time, or not in the office for a long time, which
means actual personal offices would often be vacant, consuming valuable space and
resources.
Hot desking allows a user to clear registration configurations of all accounts on the IP
phone, and then register his account on line 1. In order to use this feature, you need to
assign a hot desking key.
Procedure
Hot desking key can be configured using the configuration files or locally.
Assign a hot desking key.
Configuration File
<y0000000000xx>.cfg
For more information, refer to Hot
Desking Key on page 422.
Assign a hot desking key.
Web User Interface
Local
Navigate to:
http://<phoneIPAddress>/servlet
?p=dsskey&q=load&model=0
Phone User Interface
Assign a hot desking key.
To configure a hot desking key via web user interface:
1.
Click on DSSKey->Memory Keys (Line Key or Programable Key).
SIP-T19P IP phones only support programable keys and SIP-T22P/T21P/T20P IP phones
only support line keys and programable keys.
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Configuring Advanced Features
2.
In the desired DSS key field, select Hot Desking from the pull-down list of Type.
3.
Click Confirm to accept the change.
Note
You can configure a programable key as a hot desking key on SIP-T19P IP phones only.
To configure a hot desking key via phone user interface:
1.
Press Menu->Features->DSS Keys->Memory Keys (or Line Keys).
2.
Select the desired DSS key.
3.
Press
or
, or the Switch soft key to select Key Event from the Type field.
4.
Press
or
, or the Switch soft key to select Hot Desking from the Key Type
field.
5.
Press the Save soft key to accept the change.
Action URL allows IP phones to interact with web server applications by sending an
HTTP or HTTPS GET request. You can specify a URL that triggers a GET request when a
specified event occurs. Action URL can only be triggered by the pre-defined events
(e.g., log on). The valid URL format is: http(s)://IP address of the server/help.xml?.
The following table lists the pre-defined events for action URL.
Event
Description
Setup Completed
When the IP phone completes startup.
Registered
When the IP phone successfully registers an account.
Unregistered
When the IP phone logs off the registered account.
Register Failed
When the IP phone fails to register an account.
Off Hook
When the IP phone is off hook.
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Event
On Hook
When the IP phone is on hook.
Incoming Call
When the IP phone receives an incoming call.
Outgoing Call
When the IP phone places a call.
Established
When the IP phone establishes a call.
Terminated
When the IP phone terminates a call.
Open DND
When the IP phone enables the DND mode.
Close DND
When the IP phone disables the DND mode.
Open Always Forward
When the IP phone enables the always forward.
Close Always Forward
When the IP phone disables the always forward.
Open Busy Forward
When the IP phone enables the busy forward.
Close Busy Forward
When the IP phone disables the busy forward.
Open No Answer Forward
When the IP phone enables the no answer forward.
Close No Answer Forward
When the IP phone disables the no answer forward
Transfer Call
When the IP phone transfers a call.
Blind Transfer
When the IP phone blind transfers a call.
Attended Transfer
When the IP phone performs the
semi-attended/attended transfer.
Hold
When the IP phone places a call on hold.
UnHold
When the IP phone retrieves a hold call.
Mute
When the IP phone mutes a call.
UnMute
When the IP phone un-mutes a call.
Missed Call
When the IP phone misses a call.
IP Changed
When the IP address of the IP phone changes.
Forward Incoming Call
When the IP phone forwards an incoming call.
Reject Incoming Call
When the IP phone rejects an incoming call.
Answer New-In Call
When the IP phone answers a new call.
Transfer Finished
When the IP phone completes to transfer a call.
Transfer Failed
When the IP phone fails to transfer a call.
Idle To Busy
Busy To Idle
164
Description
When the state of the IP phone changes from idle to
busy.
When the state of phone changes from busy to idle.
Configuring Advanced Features
An HTTP or HTTPS GET request may contain variable name and variable value,
separated by “=”. Each variable value starts with $ in the query part of the URL. The
valid URL format is: http(s)://IP address of server/help.xml?variable name=$variable.
Variable name can be customized by users, while the variable value is pre-defined. For
example, a URL “http://192.168.1.10/help.xml?mac=$mac” is specified for the event
Mute, $mac will be dynamically replaced with the MAC address of the IP phone when
the IP phone mutes a call.
The following table lists pre-defined variable values.
Variable Value
Description
$mac
The MAC address of the IP phone
$ip
The IP address of the IP phone
$model
The IP phone model
$firmware
The firmware version of the IP phone
The SIP URI of the current account when the IP phone
$active_url
places a call, receives an incoming call or establishes
a call.
The user part of the SIP URI for the current account
$active_user
when the IP phone places a call, receives an incoming
call or establishes a call.
The host part of the SIP URI for the current account
$active_host
when the IP phone places a call, receives an incoming
call or establishes a call.
The SIP URI of the caller when the IP phone places a
$local
call.
The SIP URI of the callee when the IP phone receives
an incoming call.
The SIP URI of the callee when the IP phone places a
$remote
call.
The SIP URI of the caller when the IP phone receives
an incoming call.
The display name of the caller when the IP phone
$display_local
places a call.
The display name of the callee when the IP phone
receives an incoming call.
The display name of the callee when the IP phone
$display_remote
places a call.
The display name of the caller when the IP phone
receives an incoming call.
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Variable Value
$call_id
Description
The call-id of the active call.
Procedure
Action URL can be configured using the configuration files or locally.
Configure action URL.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Action URL on page 354.
Configure action URL.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servl
et?p=features-actionurl&q=loa
d
To configure action URL via web user interface:
1.
Click on Features->Action URL.
2.
Enter the action URLs in the corresponding fields.
3.
Click Confirm to accept the change.
Opposite to action URL, action URI allows IP phones to interact with web server
application by receiving and handling an HTTP or HTTPS GET request. When receiving a
GET request, the IP phone will perform the specified action and respond with a 200 OK
message. A GET request may contain variable named as “key” and variable value,
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Configuring Advanced Features
which are separated by “=”. The valid URI format is: http(s)://phone IP
address/servlet?key=variable value.
The following table lists pre-defined variable values:
Variable Value
Phone Action
OK
Press the OK key (For SIP-T19P, press
ENTER
Press the Enter soft key (Except for SIP-T20P).
SPEAKER
Press the Speakerphone key.
F_TRANSFER
Transfers a call to another party.
VOLUME_UP
Increase the volume.
VOLUME_DOWN
Decrease the volume.
MUTE
Mute the call.
F_HOLD
Place an active call on hold.
X
0-9/*/POUND
).
Cancel actions or reject incoming calls (For
SIP-T22P/T21P/T20P, also mute or un-mute calls).
Press the keypad (0-9, * or #).
Press the line keys (Except for SIP-T19P, for
L1-LX
SIP-T28P, X=6, for SIP-T26/22P, X=3, for
SIP-T21P/T20P, X=2).
D1-D10
Press the memory keys (Only for SIP-T28/T26P).
Press the CONF key (Except for
F_CONFERENCE
SIP-T22P/T21P/T19P) or the Conference soft key
(Except for SIP-T20P).
F1-F4
Press the soft keys (Except for SIP-T20P).
MSG
Press the MESSAGE key.
HEADSET
Press the HEADSET key.
RD
Press the RD key.
UP/DOWN/LEFT/RIGHT
Press the navigation keys.
Reboot
Reboot the IP phone.
AutoP
Perform auto provisioning.
DNDOn
Activate the DND feature.
DNDOff
Deactivate the DND feature.
number=xxx&outgoing_uri=y
Place a call to xxx from SIP URI y.
OFFHOOK
Pick up the handset.
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Variable Value
Phone Action
ONHOOK
Hang up the handset.
ANSWER
Answer a call.
Reset
Reset a phone.
Perform a semi-attended/attended transfer to
ATrans=xxx
xxx.
BTrans=xxx
Perform a blind transfer to xxx.
CALLEND
End a call.
Get firmware version, registration, DND or
forward configuration information.
The valid value of “x” is 0 or 1, 0 means you do
phonecfg=get[&accounts=x][&dnd
=x][&fw=x]
not need to get configuration information. 1
means you want to get configuration
information.
Note: The valid URI is: http(s)://phone IP
address/servlet?phonecfg=get[&accounts=x][&
dnd=x][&fw=x]
Note
The variable value is not applicable to all events. For example, the variable value
“MUTE” is only applicable when the IP phone is during a call.
When authentication is required, you must enter
“p=login&q=login&username=xxx&pwd=yyy&jumpto=URI&” before the variable
“key”. xxx refers to the login user name and yyy refers to the login password.
For security reasons, IP phones do not receive and handle HTTP/HTTPS GET requests by
default. You need to specify the trusted IP address for action URI. When the IP phone
receives a GET request from the trusted IP address for the first time, the LCD screen
prompts the message “Allow Remote Control?”. You can specify one or more trusted IP
addresses on the IP phone, or configure the IP phone to receive and handle the URI
from any IP address.
Procedure
Specify the trusted IP address for action URI using the configuration files or locally.
Specify the trusted IP
address(es) for sending the
Configuration File
<y0000000000xx>.cfg
action URI to the IP phone.
For more information, refer to
Action URI on page 355.
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Configuring Advanced Features
Specify the trusted IP
address(es) for sending the
action URI to the IP phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=features-remotecontrl&q
=load
To configure the trusted IP address(es) for action URI via web user interface:
1.
Click on Features->Remote Control.
2.
Enter the IP address or any in the Action URI allow IP List field.
Multiple IP addresses are separated by commas. If you enter “any” in this field, the
IP phone can receive and handle GET requests from any IP address. If you leave
the field blank, the IP phone cannot receive or handle any HTTP GET request.
3.
Click Confirm to accept the change.
Server redundancy is often required in VoIP deployments to ensure continuity of phone
service, for events where the server needs to be taken offline for maintenance, the
server fails, or the connection between the IP phone and the server fails.
Two types of redundancy are possible. In some cases, a combination of the two may be
deployed:

Failover: In this mode, the full phone system functionality is preserved by having a
second equivalent capability call server take over from the one that has gone
down/off-line. This mode of operation should be done using the DNS mechanism
from the primary to the secondary server.
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
Fallback: In this mode, a second less featured call server with SIP capability takes
over call control to provide basic calling capability, but without some advanced
features offered by the working server (for example, shared line, call recording
and MWI). IP phones support configuration of two SIP servers per SIP registration
for fallback purpose.
Phone Configuration for Redundancy Implementation
To assist in explaining the redundancy behavior, an illustrative example of how an IP
phone may be configured is shown as below. In the example, server redundancy for
fallback and failover purposes is deployed. Two separate SIP servers (a working server
and a fallback server) are configured for per line registration.
Working Server: Server 1 is configured with the domain name of the working server. For
example, yealink.pbx.com. DNS mechanism is used such that the working server is
resolved to multiple SIP servers for failover purpose. The working server is deployed in
redundant pairs, designated as primary and secondary servers. The primary server has
the highest priority server in a cluster of servers resolved by the DNS server. The
secondary server backs up a primary server when the primary server fails and offers
the same functionality as the primary server.
Fallback Server: Server 2 is configured with the IP address of the fallback server. For
example, 192.168.1.15. A fallback server offers less functionality than the working server.
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Configuring Advanced Features
Phone Registration
Registration methods of the fallback mode include:

Concurrent registration: The IP phone registers to two SIP servers (working server
and fallback server) at the same time. In a failure situation, a fallback server can
take over the basic calling capability, but without some of the advanced features
offered by the working server (default registration method).

Successive registration: The IP phone only registers to one server at a time. The IP
phone first registers to the working server. In a failure situation, the IP phone
registers to the fallback server.
When registering to the working server, the IP phone must always register to the primary
server first except in failover conditions. When the primary server registration is
unavailable, the secondary server will serve as the working server.
Procedure
Server redundancy can be configured using the configuration files or locally.
Configure the server
redundancy on the IP phone.
Configuration File
<MAC>.cfg
For more information, refer to
Server Redundancy on page
356.
Configure the server
redundancy on the IP phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0
To configure server redundancy for fallback purpose via web user interface:
1.
Click on Account->Register.
2.
Select the desired account from the pull-down list of Account.
3.
Configure registration parameters of the selected account in the corresponding
fields.
4.
Select the desired value from the pull-down list of Transport.
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5.
Configure parameters of SIP server 1 and SIP server 2 in the corresponding fields.
6.
Click Confirm to accept the change.
To configure server redundancy for failover purpose via web user interface:
1.
Click on Account->Register.
2.
Select the desired account from the pull-down list of Account.
3.
Configure registration parameters of the selected account in the corresponding
fields.
4.
172
Select DNS-NAPTR from the pull-down list of Transport.
Configuring Advanced Features
5.
Configure parameters of the SIP server 1 or SIP server 2 in the corresponding fields.
You must set the port of SIP server to 0 for NAPTR, SRV and A queries.
6.
Note
Click Confirm to accept the change.
If the outbound proxy server is required and the transport is set to DNS-NAPTR, you must
set the port of outbound proxy server to 0 for NAPTR, SRV and A queries.
If a domain name is configured for a SIP server, the IP address(es) associated with that
domain name will be resolved through DNS as specified by RFC 3263. The DNS query
involves NAPTR, SRV and A queries, which allows the IP phone to adapt to various
deployment environments. The IP phone performs NAPTR query for the NAPTR pointer
and transport protocol (UDP, TCP and TLS), the SRV query on the record returned from
the NAPTR for the target domain name and the port number, and the A query for the IP
addresses.
If an explicit port (except 0) is specified and the transport type is set to DNS-NAPTR, A
query will be performed only. If a SIP server port is set to 0 and the transport type is set
to DNS-NAPTR, NAPTR and SRV queries will be tried before falling to A query. If no port is
found through the DNS query, 5060 will be used.
The following details the procedures of DNS query for the IP phone to resolve the
domain name (e.g., yealink.pbx.com) of working server into the IP address, port and
transport protocol.
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NAPTR (Naming Authority Pointer)
First, the IP phone sends NAPTR query to get the NAPTR pointer and transport protocol.
Example of NAPTR records:
order
pref
flags
service
regexp
replacement
IN NAPTR
90
50
"s"
"SIP+D2T"
""
_sip._tcp.yealink.pbx.com
IN NAPTR
100
50
"s"
"SIP+D2U"
""
_sip._udp.yealink.pbx.com
Parameters are explained in the following table:
Parameter
order
pref
flags
Description
Specify preferential treatment for the specific record. The order
is from lowest to highest, lower order is more preferred.
Specify the preference for processing multiple NAPTR records
with the same order value. Lower value is more preferred.
The flag “s” means to perform an SRV lookup.
Specify the transport protocols:
SIP+D2U: SIP over UDP
service
SIP+D2T: SIP over TCP
SIP+D2S: SIP over SCTP
SIPS+D2T: SIPS over TCP
regexp
replacement
Always empty for SIP services.
Specify a domain name for the next query.
The IP phone picks the first record, because its order of 90 is lower than 100. The pref
parameter is unimportant as there is no other record with order 90. The flag “s”
indicates performing the SRV query next. TCP will be used, targeted to a host
determined by an SRV query of “_sip._tcp.yealink.pbx.com”. If the flag of the NAPTR
record returned is empty, the IP phone will perform NAPTR query again according to the
previous NAPTR query result.
SRV (Service Location Record)
The IP phone performs an SRV query on the record returned from the NAPTR for the host
name and the port number. Example of SRV records:
Priority
174
Weight
Port
Target
IN SRV
0
1
5060
server1.yealink.pbx.com
IN SRV
0
2
5060
server2.yealink.pbx.com
Configuring Advanced Features
Parameters are explained in the following table:
Parameter
Priority
Description
Specify preferential treatment for the specific host entry. Lower
priority is more preferred.
When priorities are equal, weight is used to differentiate the
Weight
preference. The preference is from highest to lowest. Keep the
same to load balance.
Port
Target
Identify the port number to be used.
Identify the actual host for an A query.
SRV query returns two records. The two SRV records point to different hosts and have
the same priority 0. The weight of the second record is higher than the first one, so the
second record will be picked first. The two records also contain a port “5060”, the IP
phone uses this port. If the Target is not a numeric IP address, the IP phone performs an
A query. So in this case, the IP phone uses “server1.yealink.pbx.com" and
“server2.yealink.pbx.com" for the A query.
A (Host IP Address)
The IP phone performs an A query for the IP address of each target host name. Example
of A records:
Server1.yealink.pbx.com IN A
192.168.1.13
Server2.yealink.pbx.com IN A
192.168.1.14
The IP phone picks the IP address “192.168.1.14” first.
Outgoing Call When the Working Server Connection Fails
When a user initiates a call, the phone will go through the following steps to connect the
call:
1.
Sends the INVITE request to the primary server.
2.
If the primary server does not respond correctly to the INVITE, then tries to make the
call using the secondary server.
3.
If the secondary server is also unavailable, the IP phone will try the fallback server
until it either succeeds in making a call or exhausts all servers at which point the
call will fail.
At the start of a call, server availability is determined by SIP signaling failure. SIP
signaling failure depends on the SIP protocol being used as described below:

If TCP is used, then the signaling fails if the connection or the send fails.

If UDP is used, then the signaling fails if ICMP is detected or if the signal times out. If
the signaling has been attempted through all servers in the list and this is the last
server, then the signaling fails after the complete UDP timeout defined in RFC 3261.
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If it is not the last server in the list, the maximum number of retries depends on the
configured retry count.
Procedure
Server redundancy can be configured using the configuration files or locally.
Configure the transport type on
the IP phone.
Configuration File
<MAC>.cfg
For more information, refer to
SIP Server Domain Name
Resolution on page 360.
Configure the transport type on
the IP phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0
LLDP (Linker Layer Discovery Protocol) is a vendor-neutral Link Layer protocol, which
allows IP phones to receive and/or transmit device-related information from/to directly
connected devices on the network that are also using the protocol, and store the
information about other devices. LLDP transmits information as packets called LLDP
Data Units (LLDPDUs). An LLDPDU consists of a set of Type-Length-Value (TLV) elements,
each of which contains a particular type of information about the device or the port
transmitting it.
LLDP-MED (Media Endpoint Discovery)
LLDP-MED is published by the Telecommunications Industry Association (TIA). It is an
extension to LLDP that operates between endpoint devices and network connectivity
devices. LLDP-MED specifically provides support for voice over IP (VoIP) applications
and provides the following capabilities:

Capabilities Discovery -- allows IP phones to determine the capabilities that the
connected switch supports and has enabled.

Network Policy -- provides voice VLAN configuration to notify IP phones which VLAN
to use and QoS-related configuration for voice data. It provides a “plug and play”
network environment.

Power Management -- provides information related to how IP phones are powered,
power priority, and how much power IP phones need.

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Inventory Management -- provides a means to effectively manage IP phones and
Configuring Advanced Features
their attributes such as model number, serial number and software revision.
TLVs supported by IP phones are summarized in the following table:
TLV Type
Mandatory TLVs
TLV Name
Description
Chassis ID
The network address of the IP phone.
Port ID
The MAC address of the IP phone.
Time To Live
Seconds until data unit expires.
End of LLDPDU
Marks end of LLDPDU.
System Name
System Description
Name assigned to the IP phone.
The default value is “yealink”.
Description of the IP phone.
The default value is “yealink”.
The supported and enabled capabilities
of the IP phone.
Optional TLVs
System Capabilities
The supported capabilities are Bridge,
Telephone and Router.
The enabled capabilities are Bridge and
Telephone by default.
Port Description
Description of port that sends data unit.
The default value is “WAN PORT”.
Duplex and bit rate settings of the IP
phone.
The Auto Negotiation is supported and
IEEE Std 802.3
Organizationally
Specific TLV
MAC/PHY
Configuration/Status
enabled by default.
The advertised capabilities of PMD.
Auto-Negotiation is: 100BASE-TX (full
duplex mode), 100BASE-TX (half duplex
mode), 10BASE-T (full duplex mode), or
10BASE-T (half duplex mode).
The MED device type of the IP phone and
the supported LLDP-MED TLV type can be
encapsulated in LLDPDU.
TIA
Organizationally
Media Capabilities
The supported LLDP-MED TLV types are:
LLDP-MED Capabilities, Network Policy,
Specific TLVs
Extended Power via MDI-PD and
Inventory.
Network Policy
Port VLAN ID, application type, L2 priority
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TLV Type
TLV Name
Description
and DSCP value.
Extended
Power-via-MDI
Inventory –
Hardware Revision
Inventory –
Firmware Revision
Inventory –
Software Revision
Inventory – Serial
Number
Power type, source, priority and value.
Hardware revision of the IP phone.
Firmware revision of the IP phone.
Software revision of the IP phone.
Serial number of the IP phone.
Inventory –
Manufacturer name of the IP phone.
Manufacturer Name
The default value is “yealink”.
Inventory – Model
Name
Asset ID
Model name of the IP phone.
Assertion identifier of the IP phone.
The default value is “asset”.
Procedure
LLDP can be configured using the configuration files or locally.
Configure LLDP.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
LLDP on page 356.
Configure LLDP.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=network-adv&q=load
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Configuring Advanced Features
To configure LLDP via web user interface:
1.
Click on Network->Advanced.
2.
In the LLDP block, select the desired value from the pull-down list of Active.
3.
Enter the desired time interval in the Packet Interval (1~3600s) field.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
5.
Click OK to reboot the IP phone.
VLAN (Virtual Local Area Network) is used to logically divide a physical network into
several broadcast domains. VLAN membership can be configured through software
instead of physically relocating devices or connections. Grouping devices with a
common set of requirements regardless of their physical location can greatly simplify
network design. VLANs can address issues such as scalability, security and network
management.
The purpose of VLAN configurations on the IP phone is to insert tag with VLAN
information to the packets generated by the IP phone. When VLAN is properly
configured for the ports (Internet port and PC port) on the IP phone, the IP phone will tag
all packets from these ports with the VLAN ID. The switch receives and forwards the
tagged packets to the corresponding VLAN according to the VLAN ID in the tag as
described in IEEE Std 802.3.
VLAN on IP phones allows simultaneous access for a regular PC. This feature allows a PC
to be daisy chained to an IP phone and the connection for both PC and IP phone to be
trunked through the same physical Ethernet cable.
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In addition to manual configuration, the IP phone also supports automatic discovery of
VLAN via LLDP or DHCP. The assignment takes place in this order: assignment via LLDP,
manual configuration, then assignment via DHCP.
VLAN Discovery via DHCP
IP phones support VLAN discovery via DHCP. When the VLAN Discovery method is set to
DHCP, the IP phone will examine DHCP option for a valid VLAN ID. The predefined
option 132 is used to supply the VLAN ID by default. You can customize the DHCP option
used to request the VLAN ID.
Procedure
VLAN can be configured using the configuration files or locally.
Configure VLAN for the Internet
port and PC port manually.
Configuration File
<y0000000000xx>.cfg
Configure DHCP VLAN
discovery feature.
For more information, refer to
VLAN on page 362.
Configure VLAN for the Internet
port and PC port.
Configure DHCP VLAN
Web User Interface
discovery feature.
Navigate to:
Local
http://<phoneIPAddress>/servl
et?p=network-adv&q=load
Phone User Interface
Configure VLAN for the Internet
port and PC port.
To configure VLAN for Internet port via web user interface:
1.
Click on Network->Advanced.
2.
In the VLAN block, select the desired value from the pull-down list of WAN Port
Active.
3.
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Enter the VLAN ID in the VID (1-4094) field.
Configuring Advanced Features
4.
Select the desired value (0-7) from the pull-down list of Priority.
5.
Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
6.
Click OK to reboot the IP phone.
To configure VLAN for PC port via web user interface:
1.
Click on Network->Advanced.
2.
In the VLAN block, select the desired value from the pull-down list of PC Port Active.
3.
Enter the VLAN ID in the VID (1-4094) field.
4.
Select the desired value (0-7) from the pull-down list of Priority.
5.
Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
6.
Click OK to reboot the IP phone.
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To configure DHCP VLAN discovery via web user interface:
1.
Click on Network->Advanced.
2.
In the VLAN block, select the desired value from the pull-down list of DHCP VLAN
Active.
3.
Enter the desired option in the Option field.
The default option is 132.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
5.
Click OK to reboot the IP phone.
To configure VLAN for Internet port (or PC port) via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin)
->Network->VLAN->WAN Port (or PC Port).
2.
Press
or
, or the Switch soft key to select the desired value from the VLAN
Status field.
3.
Enter the VLAN ID (1-4094) in the VID Number field.
4.
Enter the priority value (0-7) in the Priority field.
5.
Press the Save soft key to accept the change
The IP phone reboots automatically to make settings effective after a period of
time.
VPN (Virtual Private Network) is a secured private network connection built on top of
public telecommunication infrastructure, such as the Internet. It has become more
prevalent due to benefits of scalability, reliability, convenience and security. VPN
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Configuring Advanced Features
provides remote offices or individual users with secure access to their organization's
network. There are two types of VPN access: remote-access VPN (connecting an
individual device to a network) and site-to-site VPN (connecting two networks together).
Remote-access VPN allows employees to access their company's intranet from home or
outside the office, and site-to-site VPN allows employees in geographically separated
offices to share one cohesive virtual network. VPN can be also classified by the
protocols used to tunnel the traffic. It provides security through tunneling protocols:
IPSec, SSL, L2TP and PPTP.
IP phones support SSL VPN, which provides remote-access VPN capabilities through SSL.
OpenVPN is a full featured SSL VPN software solution that creates secure connections in
remote access facilities, designed to work with the TUN/TAP virtual network interface.
TUN and TAP are virtual network kernel devices. TAP simulates a link layer device and
provides a virtual point-to-point connection, while TUN simulates a network layer device
and provides a virtual network segment. IP phones use OpenVPN to achieve VPN
feature. To prevent disclosure of private information, tunnel endpoints must authenticate
each other before secure VPN tunnel is established. After VPN feature is configured
properly on the IP phone, the IP phone acts as a VPN client and uses the certificates to
authenticate the VPN server.
To use VPN, the compressed package of VPN-related files should be uploaded to the IP
phone in advance. The file format of the compressed package must be *.tar. The
related VPN files are: certificates (ca.crt and client.crt), key (client.key) and the
configuration file (vpn.cnf) of the VPN client. For more information on how to package a
TAR file, refer to OpenVPN Feature on Yealink IP Phones.
Note
VPN feature is not applicable to SIP-T19P IP phones.
Procedure
VPN can be configured using the configuration files or locally.
Configure VPN feature and
upload a TAR file to the IP
Configuration File
<y0000000000xx>.cfg
phone.
For more information, refer to
VPN on page 365.
Configure VPN feature and
upload a TAR package to the IP
Web User Interface
Local
phone.
Navigate to:
http://<phoneIPAddress>/servl
et?p=network-adv&q=load
Phone User Interface
Configure VPN feature.
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To upload a TAR file and configure VPN via web user interface:
1.
Click on Network->Advanced.
2.
Click Browse to locate the TAR file from the local system.
3.
Click Upload to upload the TAR file.
The web user interface prompts the message “Import config…”.
4.
In the VPN block, select the desired value from the pull-down list of Active.
5.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
6.
Click OK to reboot the IP phone.
To configure VPN via phone user interface after uploading a TAR file:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->VPN.
2.
Press
or
, or the Switch soft key to select the desired value from the VPN
Active field.
You must upload the OpenVPN TAR file using configuration files or via web user
interface in advance.
3.
Press the Save soft key to accept the change.
The IP phone reboots automatically to make settings effective after a period of
time.
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Configuring Advanced Features
Quality of Service (QoS) is the ability to provide different priorities for different packets
in the network, allowing the transport of traffic with special requirements. QoS
guarantees are important for applications that require fixed bit rate and are delay
sensitive when the network capacity is insufficient. There are four major QoS factors to
be considered when configuring a modern QoS implementation: bandwidth, delay,
jitter and loss.
QoS provides better network service through the following features:

Supporting dedicated bandwidth

Improving loss characteristics

Avoiding and managing network congestion

Shaping network traffic

Setting traffic priorities across the network
The Best-Effort service is the default QoS model in IP networks. It provides no
guarantees for data delivering, which means delay, jitter, packet loss and bandwidth
allocation are unpredictable. Differentiated Services (DiffServ or DS) is the most widely
used QoS model. It provides a simple and scalable mechanism for classifying and
managing network traffic and providing QoS on modern IP networks. Differentiated
Services Code Point (DSCP) is used to define DiffServ classes and stored in the first six
bits of the ToS (Type of Service) field. Each router on the network can provide QoS
simply based on the DiffServ class. The DSCP value ranges from 0 to 63 with each DSCP
specifying a particular per-hop behavior (PHB) applicable to a packet. A PHB refers to
the packet scheduling, queuing, policing, or shaping behavior of a node on any given
packet.
Four standard PHBs available to construct a DiffServ-enabled network and achieve
QoS:

Class Selector PHB -- backwards compatible with IP precedence. Class Selector
code points are of the form “xxx000”. The first three bits are the IP precedence bits.
These class selector PHBs retain almost the same forwarding behavior as nodes
that implement IP precedence-based classification and forwarding.

Expedited Forwarding PHB -- the key ingredient in DiffServ model for providing a
low-loss, low-latency, low-jitter and assured bandwidth service.

Assured Forwarding PHB -- defines a method by which BAs (Bandwidth Allocations)
can be given different forwarding assurances.

Default PHB -- specifies that a packet marked with a DSCP value of “000000” gets
the traditional best effort service from a DS-compliant node.
VoIP is extremely bandwidth- and delay-sensitive. QoS is a major issue in VoIP
implementations, regarding how to guarantee that packet traffic not be delayed or
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dropped due to interference from other lower priority traffic. VoIP can guarantee
high-quality QoS only if the voice and the SIP packets are given priority over other kinds
of network traffic. IP phones support the DiffServ model of QoS.
Voice QoS
In order to make VoIP transmissions intelligible to receivers, voice packets should not be
dropped, excessively delayed, or made to suffer varying delay. DiffServ model can
guarantee high-quality voice transmission when the voice packets are configured to a
higher DSCP value.
SIP QoS
SIP protocol is used for creating, modifying and terminating two-party or multi-party
sessions. To ensure good voice quality, SIP packets emanated from IP phones should be
configured with a high transmission priority.
DSCPs for voice and SIP packets can be specified respectively.
Procedure
QoS can be configured using the configuration files or locally.
Configure the DSCPs for voice
Configuration File
<y0000000000xx>.cfg
packets and SIP packets.
For more information, refer to
QoS on page 366.
Configure the DSCPs for voice
packets and SIP packets.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=network-adv&q=load
To configure DSCPs for voice packets and SIP packets via web user interface:
186
1.
Click on Network->Advanced.
2.
Enter the desired value in the Voice QoS (0~63) field.
Configuring Advanced Features
3.
Enter the desired value in the SIP QoS (0~63) field.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
5.
Click OK to reboot the IP phone.
Network Address Translation (NAT) is essentially a translation table that maps public IP
address and port combinations to private ones. This reduces the need for a large
number of public IP addresses. NAT ensures security since each outgoing or incoming
request must first go through a translation process. But in the VoIP environment, NAT
breaks end-to-end connectivity.
NAT Traversal
NAT traversal is a general term for techniques that establish and maintain IP
connections traversing NAT gateways, typically required for client-to-client networking
applications, especially for VoIP deployments. STUN is one of the NAT traversal
techniques supported by IP phones.
STUN (Simple Traversal of UDP over NATs)
STUN is a network protocol, used in NAT traversal for applications of real-time voice,
video, messaging, and other interactive IP communications. The STUN protocol allows
applications to operate behind a NAT to discover the presence of the network address
translator, and to obtain the mapped (public) IP address and port number that the NAT
has allocated for the UDP connections to remote parties. The protocol requires
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assistance from a third-party network server (STUN server) usually located on public
Internet. The IP phone can be configured to act as a STUN client, to send exploratory
STUN messages to the STUN server. The STUN server uses those messages to determine
the public IP address and port used, and then informs the client.
The NAT traversal and STUN server are configurable on a per-line basis.
Procedure
NAT traversal and STUN server can be configured using the configuration files or locally.
Configure NAT traversal and
STUN server on the IP phone.
Configuration File
<MAC>.cfg
For more information, refer to
Network Address Translation on
page 367.
Configure NAT traversal and
STUN server on the IP phone.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
&acc=0
To configure NAT traversal and STUN server via web user interface:
1.
Click on Account->Register.
2.
Select the desired account from the pull-down list of Account.
3.
Select STUN from the pull-down list of NAT.
4.
Enter the IP address or the domain name of the STUN server in the STUN Server
field.
5.
188
Click Confirm to accept the change.
Configuring Advanced Features
IEEE 802.1X authentication is an IEEE standard for Port-based Network Access Control
(PNAC), part of the IEEE 802.1 group of networking protocols. It offers an authentication
mechanism for devices to connect/link to a LAN or WLAN. The 802.1X authentication
involves three parties: a supplicant, an authenticator and an authentication server. The
supplicant is the IP phone that wishes to attach to the LAN or WLAN. With 802.1X
port-based authentication, the IP phone provides credentials, such as user name and
password, for the authenticator, and then the authenticator forwards the credentials to
the authentication server for verification. If the authentication server determines the
credentials are valid, the IP phone is allowed to access resources located on the
protected side of the network.
IP phones support protocols EAP-MD5, EAP-TLS, PEAP-MSCHAPv2 and
EAP-TTLS/EAP-MSCHAPv2 for 802.1X authentication.
Procedure
802.1X authentication can be configured using the configuration files or locally.
Configure the 802.1X
Configuration File
<y0000000000xx>.cfg
authentication.
For more information, refer to
802.1X on page 368.
Configure the 802.1X
authentication.
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
Local
et?p=network-adv&q=load
Phone User Interface
Configure the 802.1X
authentication.
To configure the 802.1X authentication via web user interface:
1.
Click on Network->Advanced.
2.
In the 802.1x block, select the desired protocol from the pull-down list of 802.1x
Mode.
a) If you select EAP-MD5:
1) Enter the user name for authentication in the Identity field.
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2) Enter the password for authentication in the MD5 Password field.
b) If you select EAP-TLS:
1) Enter the user name for authentication in the Identity field.
2) Leave the MD5 Password field blank.
3) In the CA Certificates field, click Browse to select the desired CA certificate
(*.pem, *.crt, *.cer or *.der) from your local system.
4) In the Device Certificates field, click Browse to select the desired client (*.pem
or *.cer) certificate from your local system.
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Configuring Advanced Features
5) Click Upload to upload the certificates.
c) If you select PEAP-MSCHAPv2:
1) Enter the user name for authentication in the Identity field.
2) Enter the password for authentication in the MD5 Password field.
3) In the CA Certificates field, click Browse to select the desired CA certificate
(*.pem, *.crt, *.cer or *.der) from your local system.
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4) Click Upload to upload the certificate.
d) If you select EAP-TTLS/EAP-MSCHAPv2:
1) Enter the user name for authentication in the Identity field.
2) Enter the password for authentication in the MD5 Password field.
3) In the CA Certificates field, click Browse to select the desired CA certificate
(*.pem, *.crt, *.cer or *.der) from your local system.
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Configuring Advanced Features
4) Click Upload to upload the certificate.
3.
Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
4.
Click OK to reboot the IP phone.
To configure the 802.1X authentication via phone user interface after:
1.
Press Menu->Settings->Advanced Settings (password: admin)
->Network->802.1x Settings.
2.
Press
or
, or the Switch soft key to select the desired value from the 802.1x
Mode field.
a) If you select EAP-MD5:
1) Enter the user name for authentication in the Identity field.
2) Enter the password for authentication in the MD5 Password field.
b) If you select EAP-TLS:
1) Enter the user name for authentication in the Identity field.
2) Leave the MD5 Password field blank.
c) If you select PEAP-MSCHAPv2:
1) Enter the user name for authentication in the Identity field.
2) Enter the password for authentication in the MD5 Password field.
d) If you select EAP-TTLS/EAP-MSCHAPv2:
1) Enter the user name for authentication in the Identity field.
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2) Enter the password for authentication in the MD5 Password field.
3.
Click Save to accept the change.
The IP phone reboots automatically to make the settings effective after a period of
time.
TR-069 is a technical specification defined by the Broadband Forum, which defines a
mechanism that encompasses secure auto-configuration of a CPE (Customer-Premises
Equipment), and incorporates other CPE management functions into a common
framework. TR-069 uses common transport mechanisms (HTTP and HTTPS) for
communication between CPE and ACS (Auto Configuration Servers). The HTTP(S)
messages contain XML-RPC methods defined in the standard for configuration and
management of the CPE.
TR-069 is intended to support a variety of functionalities to manage a collection of CPEs,
including the following primary capabilities:

Auto-configuration and dynamic service provisioning

Software or firmware image management

Status and performance monitoring

Diagnostics
The following table provides a description of RPC methods supported by IP phones.
RPC Method
GetRPCMethods
SetParameterValues
GetParameterValues
GetParameterNames
GetParameterAttributes
SetParameterAttributes
Reboot
Download
194
Description
This method is used to discover the set of methods
supported by the CPE.
This method is used to modify the value of one or
more CPE parameters.
This method is used to obtain the value of one or
more CPE parameters.
This method is used to discover the parameters
accessible on a particular CPE.
This method is used to read the attributes associated
with one or more CPE parameters.
This method is used to modify attributes associated
with one or more CPE parameters.
This method causes the CPE to reboot.
This method is used to cause the CPE to download a
specified file from the designated location.
Configuring Advanced Features
RPC Method
Description
File types supported by IP phones are:

Firmware Image

Configuration File
This method is used to cause the CPE to upload a
specified file to the designated location.
File types supported by IP phones are:
Upload

Configuration File

Log File
This method is used to request the CPE to schedule a
ScheduleInform
one-time Inform method call (separate from its
periodic Inform method calls) sometime in the future.
FactoryReset
This method resets the CPE to its factory default state.
This method informs the ACS of the completion
(either successful or unsuccessful) of a file transfer
TransferComplete
initiated by an earlier Download or Upload method
call.
This method is used to add a new instance of an
AddObject
object defined on the CPE.
This method is used to remove a particular instance
DeleteObject
of an object.
Procedure
TR-069 can be configured using the configuration files or locally.
Configure TR-069 feature.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
TR-069 on page 370.
Configure TR-069 feature.
Navigate to:
Local
Web User Interface
http://<phoneIPAddress>/servl
et?p=settings-preference&q=lo
ad
To configure TR-069 via web user interface:
1.
Click on Settings->TR069.
2.
Select Enabled from the pull-down list of Enable TR069.
3.
Enter the user name and password authenticated by the ACS in the ACS Username
and ACS Password fields.
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4.
Enter the URL of the ACS in the ACS URL field.
5.
Select the desired value from the pull-down list of Enable Periodic Inform.
6.
Enter the desired time in the Periodic Inform Interval (seconds) field.
7.
Enter the user name and password authenticated by the IP phone in the
Connection Request Username and Connection Request Password fields.
8.
Click Confirm to accept the change.
IPv6 is the next generation network layer protocol, designed as a replacement for the
current IPv4 protocol. IPv6 is developed by the Internet Engineering Task Force (IETF) to
deal with the long-anticipated problem of IPv4 address exhaustion. IPv6 uses a 128-bit
address, consisting of eight groups of four hexadecimal digits separated by colons. VoIP
network based on IPv6 can ensure QoS, a set of service requirements to deliver
performance guarantee while transporting traffic over the network.
IPv6 Address Assignment Method
Supported IPv6 address assignment methods:

Manual Assignment: An IPv6 address and other configuration parameters (e.g.,
DNS server) for the IP phone can be statically configured by an administrator.

Stateless Address Autoconfiguration (SLAAC): SLAAC is one of the most convenient
methods to assign IP addresses to IPv6 nodes. SLAAC requires no manual
configuration of the IP phone, minimal (if any) configuration of routers, and no
additional servers. To use IPv6 SLAAC, the IP phone must be connected to a
network with at least one IPv6 router connected. This router is configured by the
network administrator and sends out Router Advertisement announcements onto
the link. These announcements can allow the on-link connected IP phone to
configure itself with IPv6 address, as specified in RFC 4862.
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Configuring Advanced Features
Procedure
IPv6 can be configured using the configuration files or locally.
Configure the IPv6 address
Configuration File
<y0000000000xx>.cfg
assignment method.
For more information, refer to
IPv6 on page 372.
Configure the IPv6 address
assignment method.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=network&q=load
To configure IPv6 address assignment method via web user interface:
1.
Click on Network->Basic.
2.
Select the desired address mode (IPv6 or IPv4&IPv6) from the pull-down list of
Mode (IPv4/IPv6).
3.
In the IPv6 Config block, do one of the following.
-
If you mark the Static IP Address radio box, configure the IPv6 address and
other configuration parameters in the corresponding fields.
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-
(Optional.) If you mark the DHCP radio box, you can configure the static DNS
address in the corresponding fields.
4.
Click Confirm to accept the change.
A dialog box pops up to prompt that the settings will take effect after a reboot.
5.
Click OK to reboot the IP phone.
To configure IPv6 address assignment method via phone user interface:
1.
Press Menu->Settings->Advanced Settings (password: admin) ->Network->WAN
Port.
2.
Press
or
to select IPv4&IPv6 or IPv6 from the IP Mode field.
3.
Press
or
to highlight IPv6 and press the Enter soft key.
4.
Press
or
to select the desired IPv6 address assignment method.
If you select the Static IPv6 Client, configure the IPv6 address and other network
parameters in the corresponding fields.
5.
Press the Save soft key to accept the change
The IP phone reboots automatically to make settings effective after a period of
time.
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Configuring Audio Features
This chapter provides information for making configuration changes for the following
audio features:

Headset Prior

Dual Headset

Audio Codecs

Acoustic Clarity Technology
Headset prior allows users to use headset preferentially if a headset is physically
connected to the IP phone. This feature is especially useful for permanent or full-time
headset users.
Procedure
Headset prior can be configured using the configuration files or locally.
Configure headset prior.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Head Prior on page 376.
Configure headset prior.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To configure headset prior via web user interface:
1.
Click on Features->General Information.
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2.
Select the desired value from the pull-down list of Headset Prior.
3.
Click Confirm to accept the change.
Dual headset allows users to use two headsets on one IP phone. To use this feature,
users need to physically connect two headsets to the headset and handset jacks
respectively. Once the phone connects to a call, the user with the headset connected to
the headset jack has full-duplex capabilities, while the user with the headset connected
to the handset jack is only able to listen. This feature is not applicable to SIP-T19P and
SIP-T21P IP phones.
Procedure
Dual headset can be configured using the configuration files or locally.
Configure dual headset.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Dual Headset on page 376.
Configure dual headset.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=features-general&q=load
To configure dual headset via web user interface:
1.
200
Click on Features->General Information.
Configuring Audio Features
2.
Select the desired value from the pull-down list of Dual-Headset.
3.
Click Confirm to accept the change.
CODEC is an abbreviation of COmpress-DECompress, capable of coding or decoding a
digital data stream or signal by implementing an algorithm. The object of the algorithm
is to represent the high-fidelity audio signal with minimum number of bits while retaining
the quality. This can effectively reduce the frame size and the bandwidth required for
audio transmission.
The default codecs used on IP phones are summarized in the following table:
Codec
Algorithm
Bit Rate
Sample Rate
Packetization Time
PCMA
G.711 a-law
64 Kbps
8 Ksps
20ms
PCMU
G.711 u-law
64 Kbps
8 Ksps
20ms
G729
G.729
8 Kbps
8 Ksps
20ms
G722
G.722
64 Kbps
16 Ksps
20ms
In addition to the codecs introduced above, IP phones also support codecs: G723_53,
G723_63, G726-16, G726-24, G726-32, G726-40 (Codecs G726-16, G726-24 and G726-40
are not applicable to SIP-T21P and SIP-T19P IP phones). Codecs and priorities of these
codecs are configurable on a per-line basis. The attribute “rtpmap” is used to define a
mapping from RTP payload codes to a codec, clock rate and other encoding
parameters.
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The corresponding attributes of the codec are listed as follows:
Codec
PCMU
PCMA
G729
G722
G723_53
G723_63
G726-16
G726-24
G726-32
G726-40
iLBC
Configuration Methods
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Configuration Files
Web User Interface
Priority
RTPmap
1
0
2
8
3
18
4
9
0
4
0
4
0
103
0
104
0
102
0
105
0
106
Packetization Time
Ptime (Packetization Time) is a measurement of the duration (in milliseconds) of the
audio data in each RTP packet sent to the destination, and defines how much network
bandwidth is used for the RTP stream transfer. Before establishing a conversation, codec
and ptime are negotiated through SIP signaling. The valid values of ptime range from
10 to 60, in increments of 10 milliseconds. The default ptime is 20ms. You can also
disable the ptime negotiation.
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Configuring Audio Features
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure the codecs to use on
a per-line basis.
Configure the priority and
rtpmap for the enabled codec.
Configuration File
<MAC>.cfg
For more information, refer to
Audio Codecs on page 377.
Configure the ptime.
For more information, refer to
Audio Codecs on page 377.
Configure the codecs to use
and adjust the priority of the
enabled codecs on a per-line
basis.
Local
Web User Interface
Configure the ptime.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-codec&q=load&
acc=0
To configure the codecs to use and adjust the priority of the enabled codecs on a
per-line basis via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Codec.
4.
Select the desired codec from the Disable Codecs column and then click
.
The selected codec appears in the Enable Codecs column.
5.
Repeat the step 4 to add more codecs to the Enable Codecs column.
6.
To remove the codec from the Enable Codecs column, select the desired codec
and then click
.
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7.
To adjust the priority of codecs, select the desired codec and then click
or
8.
.
Click Confirm to accept the change.
To configure the ptime on a per-line basis via web user interface:
204
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of PTime (ms).
5.
Click Confirm to accept the change.
Configuring Audio Features
Acoustic Echo Cancellation (AEC) is used to remove acoustic echo from a voice
communication in order to improve the voice quality. It also increases the capacity
achieved through silence suppression by preventing echo from traveling across a
network. IP phones employ advanced AEC for hands-free operation. Echo cancellation
is achieved using the echo canceller.
Procedure
AEC can be configured using the configuration files or locally.
Configure AEC.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Acoustic Echo Cancellation on
page 381.
Configure AEC.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-voice&q=load
To configure AEC via web user interface:
1.
Click on Settings->Voice.
2.
Select the desired value from the pull-down list of ECHO.
3.
Click Confirm to accept the change.
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Voice Activity Detection (VAD) is used in speech processing to detect the presence or
absence of human speech. When detecting period of “silence”, VAD replaces that
silence efficiently with special packets that indicate silence is occurring. It can facilitate
speech processing, and deactivate some processes during non-speech section of an
audio session. VAD can avoid unnecessary coding or transmission of silence packets in
VoIP applications, saving on computation and network bandwidth.
Procedure
VAD can be configured using the configuration files or locally.
Configure VAD.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Voice Activity Detection on
page 382.
Configure VAD.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-voice&q=load
To configure VAD via web user interface:
206
1.
Click on Settings->Voice.
2.
Select the desired value from the pull-down list of VAD.
3.
Click Confirm to accept the change.
Configuring Audio Features
Comfort Noise Generation (CNG) is used to generate background noise for voice
communications during periods of silence in a conversation. It is a part of the silence
suppression or VAD handling for VoIP technology. CNG, in conjunction with VAD
algorithms, quickly responds when periods of silence occur and inserts artificial noise
until voice activity resumes. The insertion of artificial noise gives the illusion of a constant
transmission stream, so that background sound is consistent throughout the call and the
listener does not think the line has released. The purpose of VAD and CNG is to maintain
an acceptable perceived QoS while simultaneously keeping transmission costs and
bandwidth usage as low as possible.
Procedure
CNG can be configured using the configuration files or locally.
Configure CNG.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Comfort Noise Generation on
page 382.
Configure CNG.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-voice&q=load
To configure CNG via web user interface:
1.
Click on Settings->Voice.
2.
Select the desired value from the pull-down list of CNG.
3.
Click Confirm to accept the change.
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Jitter buffer is a shared data area where voice packets can be collected, stored, and
sent to the voice processor in even intervals. Jitter is a term indicating variations in
packet arrival time, which can occur because of network congestion, timing drift or
route changes. The jitter buffer, located at the receiving end of the voice connection,
intentionally delays the arriving packets so that the end user experiences a clear
connection with very little sound distortion. IP phones support two types of jitter buffers:
static and dynamic. A static jitter buffer adds the fixed delay to voice packets. You can
configure the delay time for the static jitter buffer on IP phones. A dynamic jitter buffer is
capable of adapting the changes in the network's delay. The range of the delay time for
the dynamic jitter buffer added to packets can be also configured on IP phones.
Procedure
Jitter buffer can be configured using the configuration files or locally.
Configure the mode of jitter
buffer and the delay time for
Configuration File
<y0000000000xx>.cfg
jitter buffer.
For more information, refer to
Jitter Buffer on page 382.
Configure the mode of jitter
buffer and the delay time for
Local
Web User Interface
jitter buffer.
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-voice&q=load
To configure Jitter Buffer via web user interface:
1.
Click on Settings->Voice.
2.
Mark the desired radio box in the Type field.
3.
Enter the minimum delay time for adaptive jitter buffer in the Min Delay field.
Valid values range from 0 to 300.
4.
Enter the maximum delay time for adaptive jitter buffer in the Max Delay field.
Valid values range from 0 to 300.
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Configuring Audio Features
5.
Enter the fixed delay time for fixed jitter buffer in the Normal field.
Valid values range from 0 to 300.
6.
Click Confirm to accept the change.
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210
Configuring Security Features
This chapter provides information for making configuration changes for the following
security-related features:

Transport Layer Security

Secure Real-Time Transport Protocol

Encrypting Configuration Files
TLS is a commonly-used protocol for providing communications privacy and managing
the security of message transmission, allowing IP phones to communicate with other
remote parties and connect to the HTTPS URL for provisioning in a way that is designed
to prevent eavesdropping and tampering.
TLS protocol is composed of two layers: TLS Record Protocol and TLS Handshake
Protocol. The TLS Record Protocol completes the actual data transmission and ensures
the integrity and privacy of the data. The TLS Handshake Protocol allows the server and
client to authenticate each other and negotiate an encryption algorithm and
cryptographic keys before data is exchanged.
The TLS protocol uses asymmetric encryption for authentication of key exchange,
symmetric encryption for confidentiality, and message authentication codes for
integrity.

Symmetric encryption: For symmetric encryption, the encryption key and the
corresponding decryption key can be told by each other. In most cases, the
encryption key is the same as the decryption key.

Asymmetric encryption: For asymmetric encryption, each user has a pair of
cryptographic keys – a public encryption key and a private decryption key. The
information encrypted by the public key can only be decrypted by the
corresponding private key and vice versa. Usually, the receiver keeps its private
key. The public key is known by the sender, so the sender sends the information
encrypted by the known public key, and then the receiver uses the private key to
decrypt it.
IP phones support TLS version 1.0. A cipher suite is a named combination of
authentication, encryption, and message authentication code (MAC) algorithms used
to negotiate the security settings for a network connection using the TLS/SSL network
protocol. IP phones support the following cipher suites:

DHE-RSA-AES256-SHA

DHE-DSS-AES256-SHA
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
AES256-SHA

EDH-RSA-DES-CBC3-SHA

EDH-DSS-DES-CBC3-SHA

DES-CBC3-SHA

DHE-RSA-AES128-SHA

DHE-DSS-AES128-SHA

AES128-SHA

IDEA-CBC-SHA

DHE-DSS-RC4-SHA

RC4-SHA

RC4-MD5

EXP1024-DHE-DSS-DES-CBC-SHA

EXP1024-DES-CBC-SHA

EDH-RSA-DES-CBC-SHA

EDH-DSS-DES-CBC-SHA

DES-CBC-SHA

EXP1024-DHE-DSS-RC4-SHA

EXP1024-RC4-SHA

EXP1024-RC4-MD5

EXP-EDH-RSA-DES-CBC-SHA

EXP-EDH-DSS-DES-CBC-SHA

EXP-DES-CBC-SHA

EXP-RC4-MD5
The following figure illustrates the TLS messages exchanged between the IP phone and
TLS server to establish an encrypted communication channel:
Step1: IP phone sends “Client Hello” message proposing SSL options.
Step2: Server responds with “Server Hello” message selecting the SSL options, sends its
public key information in “Server Key Exchange” message and concludes its part of the
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Configuring Security Features
negotiation with “Server Hello Done” message.
Step3: IP phone sends session key information (encrypted by server’s public key) in the
“Client Key Exchange” message.
Step4: Server sends “Change Cipher Spec” message to activate the negotiated options
for all future messages it will send.
IP phones can encrypt SIP with TLS, which is called SIPS. When TLS is enabled for an
account, the SIP message of this account will be encrypted, and a lock icon appears on
the LCD screen after the successful TLS negotiation.
Certificates
The IP phone can serve as a TLS client or a TLS server. The TLS requires the following
security certificates to perform the TLS handshake:

Trusted Certificate: When the IP phone requests a TLS connection with a server, the
IP phone should verify the certificate sent by the server to decide whether it is
trusted based on the trusted certificates list. The IP phone has 30 built-in trusted
certificates. You can upload 10 custom certificates at most. The format of the trusted
certificate files must be *.pem,*.cer,*.crt and *.der.

Server Certificate: When clients request a TLS connection with the IP phone, the IP
phone sends the server certificate to the clients for authentication. The IP phone
has two types of built-in server certificates: a unique server certificate and a
generic server certificate. You can only upload one server certificate to the IP
phone. The old server certificate will be overridden by the new one. The format of
the server certificate files must be *.pem and *.cer.
-
A unique server certificate: It is unique to an IP phone (based on the MAC
address) and issued by the Yealink Certificate Authority (CA).
-
A generic server certificate: It issued by the Yealink Certificate Authority (CA).
Only if no unique certificate exists, the IP phone may send a generic certificate
for authentication.
The IP phone can authenticate the server certificate based on the trusted certificates list.
The trusted certificates list and the server certificates list contain the default and custom
certificates. You can specify the type of certificates the IP phone accepts: default
certificates, custom certificates or all certificates.
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Common Name Validation feature enables the IP phone to mandatorily validate the
common name of the certificate sent by the connecting server.
Note
In TLS feature, we use the terms trusted and server certificate. These are also known as
CA and device certificates.
Firmware upgrade from version 71 to 72 will result in update of the default server
certificates.
We strongly recommend that you do not downgrade the firmware. For
SIP-T20P/T22P/T26P/T28P IP phones, firmware downgrade will result in damage to SSL
certificates.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure TLS on a per-line
<MAC>.cfg
basis.
For more information, refer to
TLS on page 384.
Configure trusted certificates
feature.
Configure server certificates
Configuration File
feature.
For more information, refer to
<y0000000000xx>.cfg
TLS on page 384.
Upload the trusted certificates.
Upload the server certificates.
For more information, refer to
Uploading Certificates on page
386.
Configure TLS on a per-line
basis.
Navigate to:
http://<phoneIPAddress>/servl
et?p=account-register&q=load
Local
Web User Interface
&acc=0
Configure trusted certificates
feature.
Upload the trusted certificates.
Navigate to:
http://<phoneIPAddress>/servl
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Configuring Security Features
et?p=trusted-cert&q=load
Configure server certificates
feature.
Upload the server certificates.
Navigate to:
http://<phoneIPAddress>/servl
et?p=server-cert&q=load
To configure TLS on a per-line basis via web user interface:
1.
Click on Account->Register.
2.
Select the desired account from the pull-down list of Account.
3.
Select TLS from the pull-down list of Transport.
4.
Click Confirm to accept the change.
To configure the trusted certificates via web user interface:
1.
Click on Security->Trusted Certificates.
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2.
Select the desired values from the pull-down lists of Only Accept Trusted
Certificates, Common Name Validation and CA Certificates.
3.
Click Confirm to accept the change.
To upload a trusted certificate via web user interface:
1.
Click on Security->Trusted Certificates.
2.
Click Browse to select the certificate (*.pem, *.crt, *.cer or *.der) from your local
system.
3.
Click Upload to upload the certificate.
To configure the server certificates via web user interface:
1.
216
Click on Security->Server Certificates.
Configuring Security Features
2.
Select the desired value from the pull-down list of Device Certificates.
3.
Click Confirm to accept the change.
To upload a server certificate via web user interface:
1.
Click on Security->Server Certificates.
2.
Click Browse to select the certificate (*.pem and *.cer) from your local system.
3.
Click Upload to upload the certificate.
A dialog box pops up to prompt “Success: The Server Certificate has been loaded!
Rebooting, please wait…”.
Secure Real-Time Transport Protocol (SRTP) encrypts the RTP streams during VoIP
phone calls to avoid interception and eavesdropping. The parties participating in the
call must enable SRTP feature simultaneously. When this feature is enabled on both
phones, the type of encryption to utilize for the session is negotiated between the IP
phones. This negotiation process is compliant with RFC 4568.
When a user places a call on the enabled SRTP phone, the IP phone sends an INVITE
message with the RTP encryption algorithm to the destination phone.
Example of the RTP encryption algorithm carried in the SDP of the INVITE message:
m=audio 11780 RTP/SAVP 0 8 18 9 101
a=crypto:1 AES_CM_128_HMAC_SHA1_80
inline:NzFlNTUwZDk2OGVlOTc3YzNkYTkwZWVkMTM1YWFj
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a=crypto:2 AES_CM_128_HMAC_SHA1_32
inline:NzkyM2FjNzQ2ZDgxYjg0MzQwMGVmMGUxMzdmNWFm
a=crypto:3 F8_128_HMAC_SHA1_80 inline:NDliMWIzZGE1ZTAwZjA5ZGFhNjQ5YmEANTMzYzA0
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:9 G722/8000
a=fmtp:101 0-15
a=rtpmap:101 telephone-event/8000
a=ptime:20
a=sendrecv
The callee receives the INVITE message with the RTP encryption algorithm, and then
answers the call by responding with a 200 OK message which carries the negotiated
RTP encryption algorithm.
Example of the RTP encryption algorithm carried in the SDP of the 200 OK message:
m=audio 11780 RTP/SAVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=crypto:1 AES_CM_128_HMAC_SHA1_80
inline:NGY4OGViMDYzZjQzYTNiOTNkOWRiYzRlMjM0Yzcz
a=sendrecv
a=ptime:20
a=fmtp:101 0-15
SRTP is configurable on a per-line basis. When SRTP is enabled on both IP phones, RTP
streams will be encrypted, and a lock icon appears on the LCD screen of each IP
phone after successful negotiation.
Note
If you enable SRTP, then you should also enable TLS. This ensures the security of SRTP
encryption. For more information on TLS, refer to Transport Layer Security on page 211.
Procedure
SRTP can be configured using the configuration files or locally.
Configure SRTP feature on a
Configuration File
<MAC>.cfg
per-line basis.
For more information, refer to
SRTP on page 387.
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Configuring Security Features
Configure SRTP feature on a
per-line basis.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
To configure SRTP feature via web user interface:
1.
Click on Account.
2.
Select the desired account from the pull-down list of Account.
3.
Click on Advanced.
4.
Select the desired value from the pull-down list of RTP Encryption (SRTP).
5.
Click Confirm to accept the change.
Encrypted configuration files can be downloaded from the provisioning server to
protect against unauthorized access and tampering of sensitive information (e.g., login
passwords, registration information). Yealink provides a configuration encryption tool
for encrypting configuration files. The encryption tool encrypts plaintext
<y0000000000xx>.cfg and <MAC>.cfg files (one by one or in batch) using 16-character
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
symmetric keys (the same or different keys for configuration files) and generates
encrypted configuration files with the same file name as before. This tool also encrypts
the plaintext 16-character symmetric keys using a fixed key, which is the same as the
one built in the IP phone, and generates new files named as <xx_Security>.enc (xx
indicates the name of the configuration file, for example, y000000000000_Security.enc
for y000000000000.cfg file). This tool generates another new file named as Aeskey.txt to
store the plaintext 16-character symmetric keys for each configuration file.
For a Microsoft Windows platform, you can use a Yealink-supplied encryption tool
"Config_Encrypt_Tool.exe" to encrypt the <y0000000000xx>.cfg and <MAC>.cfg files
respectively.
Note
Yealink also provides a configuration encryption tool (yealinkencrypt) for Linux platform
if required. For more information, refer to Yealink Configuration Encryption Tool User
Guide.
For security reasons, administrator should upload encrypted configuration files,
<y0000000000xx_Security>.enc and/or <MAC_Security>.enc files to the root directory
of the provisioning server. During auto provisioning, the IP phone requests to download
<y0000000000xx>.cfg file first. If the downloaded configuration file is encrypted, the
phone will request to download <y0000000000xx_Security>.enc file (if enabled) and
decrypt it into the plaintext key (e.g., key2) using the built-in key (e.g., key1). Then the IP
phone decrypts <y0000000000xx>.cfg file using key2. After decryption, the IP phone
resolves configuration files and updates configuration settings onto the IP phone
system.
The way the IP phone processes the <MAC>.cfg file is the same to that of
the<y0000000000xx>.cfg file.
Procedure to Encrypt Configuration Files
To encrypt the <y0000000000xx>.cfg file:
1.
Double click “Config_Encrypt_Tool.exe” to start the application tool.
The screenshot of the main page is shown as below:
When you start the application tool, a file folder named “Encrypted” is created
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Configuring Security Features
automatically in the directory where the application tool is located.
2.
Click Browse to locate configuration file(s) (e.g., y000000000000.cfg) from your
local system in the Select File(s) field.
To select multiple configuration files, you can select the first file and then press and
hold the Ctrl key and select the next files.
3.
(Optional.) Click Browse to locate the target directory from your local system in the
Target Directory field.
The tool uses the file folder “Encrypted” as the target directory by default.
4.
(Optional.) Mark the desired radio box in the AES Model field.
If you mark the Manual radio box, you can enter an AES key in the AES KEY field or
click Re-Generate to generate an AES key in the AES KEY field. The configuration
file(s) will be encrypted using the AES key in the AES KEY field.
If you mark the Auto Generate radio box, the configuration file(s) will be encrypted
using random AES key. The AES keys of configuration files are different.
Note
AES keys must be 16 characters and the supported characters contain: 0 ~ 9, A ~ Z, a ~
z.
5.
Click Encrypt to encrypt the configuration file(s).
6.
Click OK.
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The target directory will be automatically opened. You can find the encrypted CFG
file(s), encrypted key file(s) and an Aeskey.txt file storing plaintext AES key(s).
Procedure
Decryption method can be configured using the configuration files.
Configure the decryption
method.
Configuration File
<y0000000000xx>.cfg
Configure AES keys.
For more information, refer to
Configuring Decryption Method
on page 387.
Configure AES keys.
Local
Web User Interface
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-autop&q=load
To configure AES keys via web user interface:
1.
222
Click on Settings->Auto Provision.
Configuring Security Features
2.
Enter the values in the Common AES Key and MAC-Oriented AES Key fields.
AES keys must be 16 characters and the supported characters contain: 0-9, A-Z, a-z.
3.
Click Confirm to accept the change.
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224
Upgrading Firmware
This chapter provides information about upgrading the IP phone firmware. Two methods
of firmware upgrade:

Manually, from the local system.

Automatically, from the provisioning server.
The following table lists the associated firmware name for each IP phone model (X is
replaced by the actual firmware version).
Note
IP Phone Model
Associated Firmware Name
SIP-T28P
2.x.x.x.rom
SIP-T26P
6.x.x.x.rom
SIP-T22P
7.x.x.x.rom
SIP-T21P
34.x.x.x.rom
SIP-T20P
9.x.x.x.rom
SIP-T19P
31.x.x.x.rom
You can download the latest firmware online:
http://www.yealink.com/DocumentDownload.aspx?CateId=142&flag=142.
Upgrade via Web User Interface
To manually upgrade firmware via web user interface, you need to store firmware to
your local system in advance.
To upgrade firmware manually via web user interface:
1.
Click on Settings->Upgrade.
2.
Click Browse.
3.
Select firmware from the local system.
4.
Click Upgrade.
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A dialog box pops up to prompt “Firmware of the SIP Phone will be updated. It will take
5 minutes to complete. Please don't power off!”.
5.
Note
Click OK to confirm the upgrade.
Do not unplug the network and power cables when the IP phone is upgrading firmware.
Do not close and refresh the browser when the IP phone is upgrading firmware via web
user interface.
Upgrade Firmware from the Provisioning Server
IP phones support to use FTP, TFTP, HTTP, and HTTPS protocols to download the
configuration files and firmware from the provisioning server, and then upgrade
firmware automatically.
IP phones can download firmware stored on the provisioning server in one of two ways:

Check for both configuration files and firmware stored on the provisioning server
during startup.

Automatically check for configuration files and firmware at a fixed interval or
specific time.
Method of checking for configuration files and firmware is configurable.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configure the way for the IP
phone to check for
Configuration File
<y0000000000xx>.cfg
configuration files.
Specify the access URL of
firmware.
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Upgrading Firmware
For more information, refer to
Upgrading Firmware on page
389.
Configure the way for the IP
phone to check for
Local
Web User Interface
configuration files.
Navigate to:
http://<phoneIPAddress>/servl
et?p=settings-autop&q=load
To configure the way for the IP phone to check for new configuration files via web user
interface:
1.
Click on Settings->Auto Provision.
2.
Make the desired change.
3.
Click Confirm to accept the change.
When the “Power On” is set to On, the IP phone will check configuration files stored on
the provisioning server during startup and then will download firmware from the server.
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228
Resource Files
When configuring particular features, you may need to upload resource files (e.g., local
contact directory, remote phone book) to IP phones. The resources files can be local
contact directory, remote phone book and so on. Ask Yealink field application engineer
for resource file templates. If the resource file is to be used for all IP phones of the same
model, the resource file access URL is best specified in the <y0000000000xx>.cfg file.
However, if you want to specify the desired phone to use the resource file, the resource
file access URL should be specified in the <MAC>.cfg file.
This chapter provides the detailed information on how to customize the following
resource files and specify the access URL:

Replace Rule Template

Dial-now Template

Softkey Layout Template

Local Contact File

Remote XML Phone Book

Directory Template

Specifying the Access URL of Resource Files
The replace rule template helps with the creation of multiple replace rules. After setup,
place the replace rule template to the provisioning server and specify the access URL in
the configuration files.
When editing a replace rule template, learn the following:

<DialRule> indicates the start of a template and </DialRule> indicates the end of
a template.

Create replace rules between <DialRule> and </DialRule>.

When specifying the desired line(s) to apply the replace rule, the valid values are 0
and line ID. The digit 0 stands for all lines. Multiple line IDs are separated by
commas. This is not applicable to SIP-T19P IP phones.

At most 100 replace rules can be added to the IP phone.

The expression syntax in the replace rule template is the same as that introduced
in the section Creating Dial Plan on page 32.
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Procedure
Use the following procedures to customize a replace rule template.
To customize a replace rule template:
1.
Open the template file using an ASCII editor.
2.
Add the following string to the template, each starting on a separate line:
<Data Prefix="" Replace="" LineID=""/>
Where:
Prefix="" specifies the numbers to be replaced.
Replace="" specifies the alternate string instead of what the user enters.
LineID="" specifies the desired line(s) for this rule. When you leave it blank or enter
0, this replace rule will apply to all lines.
3.
Specify the values within double quotes.
4.
Place this file to the provisioning server.
The following is an example of a replace rule template:
<DialRule>
<Data Prefix="1" Replace="05928665234" LineID=""/>
<Data Prefix="2(xx)" Replace="002$1" LineID="0"/>
<Data Prefix="5([6-9])(.)" Replace="3$2" LineID="1,2,3"/>
<Data Prefix="0(.)" Replace="9$1" LineID="2"/>
<Data Prefix="1009" Replace="05921009" LineID="1"/>
</DialRule>
The dial-now template helps with the creation of multiple dial-now rules. After setup,
place the dial-now template to the provisioning server and specify the access URL in the
configuration files.
When editing a dial-now template, learn the following:

<DialNow> indicates the start of a template and </DialNow> indicates the end of
a template.

Create dial-now rules between <DialNow> and </DialNow>.

When specifying the desired line(s) for the dial-now rule, the valid values are 0 and
line ID. 0 stands for all lines. Multiple line IDs are separated by commas. This is not
applicable to SIP-T19P IP phones.
230

At most 100 rules can be added to the IP phone.

The expression syntax in the dial-now rule template is the same as that introduced
Resource Files
in the section Creating Dial Plan on page 32.
Procedure
Use the following procedures to customize a dial-now template.
To customize a dial-now template:
1.
Open the template file using an ASCII editor.
2.
Add the following string to the template, each starting on a separate line:
<Data DialNowRule="" LineID=""/>
Where:
DialNowRule="" specifies the dial-now rule.
LineID="" specifies the desired line(s) for this rule. When you leave it blank or enter
0, this dial-now rule will apply to all lines.
3.
Specify the values within double quotes.
4.
Place this file to the provisioning server.
The following is an example of a dial-now template:
<DialNow>
<Data DialNowRule="1234" LineID="1"/>
<Data DialNowRule="52[0-6]" LineID="1"/>
<Data DialNowRule="xxxxxx" LineID=""/>
</DialNow>
The softkey layout template allows you to assign different soft key layouts to different
call states. The call states include CallFailed, CallIn, Connecting, Dialing, RingBack and
Talking. After setup, place the templates to the provisioning server and specify the
access URL in the configuration files.
When editing a softkey layout template, learn the following:

<Call States> indicates the start of a template and </Call States> indicates the
end of a template. For example, <CallFailed></CallFailed>.

<Disable> indicates the start of the disabled soft key list and </Disable> indicates
the end of the soft key list, the disabled soft keys are not displayed on the LCD
screen.

Create disabled soft keys between <Disable> and </Disable>.

<Enable> indicates the start of the enabled soft key list and </Enable> indicates
the end of the soft key list, the enabled soft keys are displayed on the LCD screen.

Create enabled soft keys between <Enable> and </Enable>.
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
<Default> indicates the start of the default soft key list and </Default> indicates
the end of the default soft key list, the default soft keys are displayed on the LCD
screen by default.
Procedure
Use the following procedures to customize a softkey layout template.
To customize a softkey layout template:
1.
Open the template file using an ASCII editor.
2.
For each soft key that you want to enable, add the following string to the file. Each
starts on a separate line:
<Key Type=""/>
Where:
Key Type="" specifies the enabled soft key (This value cannot be blank).
For each disabled soft key and each default soft key that you want to add, add the
same string introduced above.
3.
Specify the values within double quotes.
4.
Place this file to the provisioning server.
The following is an example of the CallFailed template:
<CallFailed>
<Disable>
<Key Type="Empty"/>
<Key Type="Switch"/>
<Key Type="Cancel"/>
</Disable>
<Enable>
<Key Type="NewCall"/>
<Key Type="Empty"/>
<Key Type="Empty"/>
<Key Type="Empty"/>
</Enable>
<Default>
<Key Type="NewCall"/>
<Key Type="Empty"/>
<Key Type="Empty"/>
<Key Type="Empty"/>
</Default>
</CallFailed>
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Resource Files
You can add contacts one by one on the IP phone directly. You can also add multiple
contacts at a time and/or share contacts between IP phones using the local contact
template file. After setup, place the template file to the provisioning server and specify
the access URL of the template file in the configuration files.
When editing a local contact template, learn the following:

<root_contact> indicates the start of a contact list and </root_contact> indicates
the end of a contact list.

<root_group> indicates the start of a group list and </root_group> indicates the
end of a group list.

When specifying a ring tone for a contact or a group, the format of the value must
be Auto (the first registered line), Resource:RingN.wav (system ring tone, integer N
ranges from 1 to 5) or Custom:Name.wav (custom ring tone).

When specifying a desired line for a contact, the valid values are 0 and line ID, 0
stands for the first available account. Multiple line IDs are separated by commas.

At most 5 groups can be added to the IP phone.

At most 1000 local contacts can be added to the IP phone.
Procedure
Use the following procedures to customize a local contact template file.
To customize a local contact file:
1.
Open the template file using an ASCII editor.
2.
For each group that you want to add, add the following string to the file. Each starts
on a separate line:
<group display_name="" ring=""/>
Where:
display_name="" specifies the name of the group.
ring="" specifies the desired ring tone for this group.
3.
For each contact that you want to add, add the following string to the file. Each
starts on a separate line:
<contact display_name="" office_number="" mobile_number="" other_number=""
line="" ring="" group_id_name=""/>
Where:
display_name="" specifies the name of the contact (This value cannot be blank or
duplicated).
office_number="" specifies the office number of the contact.
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mobile_number="" specifies the mobile number of the contact.
other_number="" specifies the other number of the contact.
line="" specifies the line you want to add this contact to.
ring="" specifies the ring tone for this contact.
group_id_name="" specifies the existing group you want to add the contact to.
4.
Specify the values within double quotes.
5.
Place this file to the provisioning server.
The following is an example of a local contact file:
<root_group>
<group display_name="Friend" ring=""/>
<group display_name="Family" ring="Resource:Ring1.wav"/>
</root_group>
<root_contact>
<contact display_name="John" office_number="1001"
mobile_number="12345678910" other_number="" line="0" ring="Auto"
group_id_name="All Contacts"/>
<contact display_name="Alice" office_number="1002" mobile_number=""
other_number="" line="1,2" ring=”Resource:Ring2.wav”
group_id_name="Friend"/>
</root_contact>
IP phones can access 5 remote phone books. You can customize the remote XML phone
book for IP phones as required. Before specifying the access URL of the remote phone
book in the configuration files, you need to create a remote XML phone book and then
place it to the provisioning server.
When creating an XML phone book, learn the following:

<YealinkIPPhoneDirectory> indicates the start of a phone book and
</YealinkIPPhoneDirectory> indicates the end of a phone book.

<DirectoryEntry> indicates the start of a contact and </DirectoryEntry> indicates
the end of a contact.
Procedure
Use the following procedures to customize an XML phone book.
Customizing an XML phone book:
1.
234
Open the template file using an ASCII editor.
Resource Files
2.
For each contact that you want to add, add the following strings to the phone book.
Each starts on a separate line:
<Name>Mary</Name>
<Telephone>1001</Telephone>
Where:
Specify the contact name between <Name> and </Name>.
Specify the contact number between <Telephone> and </Telephone>.
3.
Specify the values within double quotes.
4.
Place this file to the provisioning server.
The following is an example of an XML phone book:
<YealinkIPPhoneDirectory>
<DirectoryEntry>
<Name>Jack</Name>
<Telephone>1003</Telephone>
</DirectoryEntry>
<DirectoryEntry>
<Name>John</Name>
<Telephone>1004</Telephone>
</DirectoryEntry>
<DirectoryEntry>
<Name>Marry</Name>
<Telephone>1005</Telephone>
</DirectoryEntry>
</YealinkIPPhoneDirectory>
Note
Yealink supplies a phonebook generation tool to generate a remote XML phone book.
For more information, refer to Yealink Phonebook Generation Tool User Guide.
Directory provides easy access to frequently used lists. The lists may contain Local
Directory, History, Remote Phone Book and LDAP. Users can access the lists by pressing
the Directory soft key when the IP phone is idle. After setup, place the directory
template to the provisioning server and specify the access URL in the configuration files.
When editing a directory template, learn the following:

<root_favorite_set> indicates the start of a template and </root_favorite_set>
indicates the end of a template.
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
Create directory between <root_favorite_set> and </root_favorite_set>.

When specifying the display name of the directory list, the valid values are Local
Contacts, History, Remote Phone Book (not applicable to SIP-T20P IP phones) and
LDAP (not applicable to SIP-T19P and SIP-T20P IP phones).

When specifying the display priority of the directory list, the valid values are 1, 2, 3
and 4. 1 is the highest priority, 4 is the lowest.

When enabling or disabling the desired directory list, the valid values are 0 and 1.
0 stands for Disabled, 1 stands for Enabled.
Procedure
Use the following procedures to customize a directory template.
Customizing a directory template:
1.
Open the template file using an ASCII editor.
2.
For each directory list that you want to configure, add the following string to the file.
Each starts on a separate line:
<item id_name="" display_name="" priority="" enable="" />
Where:
id_name="" specifies the existing directory list you want to configure. We do not
recommend editing this field.
display_name="" specifies the display name of the directory list. We do not
recommend editing this field.
priority="" specifies the display priority of the directory list.
enable="" enables or disables the directory list.
3.
Specify the values within double quotes.
4.
Place this file to the provisioning server.
The following is an example of a directory template:
<root_favorite_set>
<item id_name="localdirectory" display_name="Local Directory" priority="1"
enable="1" />
<item id_name="history" display_name="History" priority="2" enable="0" />
<item id_name="remotedirectory" display_name="Remote Phone Book"
priority="3" enable="0" />
<item id_name="ldap" display_name="LDAP" priority="4" enable="0" />
</root_favorite_set>
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Resource Files
The super search template allows you to search for a contact in your desired lists when
the phone is in the dialing screen. The lists may contain Local Directory, History, Remote
Phone Book and LDAP. After setup, place the super search template to the provisioning
server and specify the access URL in the configuration files.
When editing a super search template, learn the following:

<root_super_search> indicates the start of a template and </root_super_search>
indicates the end of a template.

Create super search between <root_super_search> and </root_super_search>.

When specifying the display name of the directory list, the valid values are Local
Contacts, History, Remote Phone Book (not applicable to SIP-T20P IP phones) and
LDAP (not applicable to SIP-T19P and SIP-T20P IP phones).

When specifying the priority of search results, the valid values are 1, 2, 3 and 4. 1 is
the highest priority, 4 is the lowest.

When enabling or disabling the desired directory list, the valid values are 0 and 1.
0 stands for Disabled, 1 stands for Enabled.
Procedure
Use the following procedures to customize a super search template.
Customizing a super search template:
1.
Open the template file using an ASCII editor.
2.
For each directory list that you want to configure, add the following string to the file.
Each starts on a separate line:
<item id_name="" display_name="" priority="" enable="" />
Where:
id_name="" specifies the existing directory list you want to configure. We do not
recommend editing this field.
display_name="" specifies the display name of the directory list. We do not
recommend editing this field.
priority="" specifies the priority of search results.
enable="" enables or disables the directory list.
3.
Specify the values within double quotes.
4.
Place this file to the provisioning server.
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The following is an example of a super search template:
<root_super_search>
<item id_name="local_directory_search" display_name="Local Contacts"
priority="1" enable="1" />
<item id_name="calllog_search" display_name="History" priority="2"
enable="1" />
<item id_name="remote_directory_search" display_name="Remote Phone
Book" priority="3" enable="0" />
<item id_name="ldap_search" display_name="LDAP" priority="4" enable="0" />
</root_super_search>
Access URL of the resource file can be configured in the configuration files:
Configure the access URL of the
replace rule template.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Replace Rule
Template on page 392.
Configure the access URL of the
dial-now rule template.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Dial-now
Template on page 393.
Configure the access URL of the
softkey layout template.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Softkey Layout
Template on page 393.
Configure the access URL of the
local contact file.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Local Contact
File on page 396.
Configure the access URL of the
remote XML phone book.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Remote XML
Phone Book on page 396.
238
Resource Files
Configure the access URL of the
directory template.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Directory
Template on page 396.
Configure the access URL of the
super search template.
Configuration File
<y0000000000xx>.cfg
For more information, refer to
Access URL of Super Search
Template on page 397.
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240
Troubleshooting
This chapter provides an administrator with general information for troubleshooting
some common problems that he (or she) may encounter while using IP phones.
IP phones can provide feedback in a variety of forms such as log files, packets, status
indicators and so on, which can help an administrator more easily find the system
problem and fix it.
The following are helpful for better understanding and resolving the working status of
the IP phone.

Viewing Log Files

Capturing Packets

Enabling Watch Dog Feature

Getting Information from Status Indicators

Analyzing Configuration File
If your IP phone encounters some problems, commonly the log files are used. You can
export the log files to a syslog server or the local system. You can also specify the
severity level of the log to be reported to a log file. The default system log level is 3
(Changes to this parameter via web user interface require a reboot).
In the configuration files, you can use the following parameters to configure system log
settings:

syslog.server -- Specify the IP address of the syslog server to which the log will be
exported.

syslog.log_level -- Specify the system log level.
For more information on the system log setting parameters, refer to Log Settings on
page 397.
To configure the level of the system log via web user interface:
1.
Click on Settings->Configuration.
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2.
Select the desired level from the pull-down list of System Log Level.
3.
Click Confirm to accept the change.
A dialog box pops up to prompt “Do you want to restart your machine?”. The
configuration will take effect after a reboot.
4.
Click OK to reboot the IP phone.
After a reboot, the system log level is set as 6, the administrator debug level.
Note
Administrator level debugging may make some sensitive information accessible (e.g.,
password-dial number), we recommend that you reset the system log level to 3 after
having the syslog file provided.
To configure the phone to export the system log to a syslog server via web user
interface:
242
1.
Click on Settings->Configuration.
2.
Mark the Server radio box in the Export System Log field.
3.
Enter the IP address or domain name of the syslog server in the Server Name field.
Troubleshooting
4.
Click Confirm to accept the change.
A dialog box pops up to prompt “Do you want to restart your machine?”. The
configuration will take effect after a reboot.
5.
Click OK to reboot the IP phone.
The system log will be exported successfully to the desired syslog server after a
reboot.
6.
Reproduce the issue.
To export a log file to the local system via web user interface:
1.
Click on Settings->Configuration.
2.
Mark the Local radio box in the Export System Log field.
3.
Reproduce the issue.
4.
Click Export to open file download window, and then save the file to your local
system.
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The following figure shows a portion of a log file:
You can capture packet in two ways: capturing the packet via web user interface or
using the Ethernet software. You can analyze the packet captured for troubleshooting
purpose.
To capture packets via web user interface:
244
1.
Click on Settings->Configuration.
2.
Click Start to start capturing signal traffic.
3.
Reproduce the issue to get stack traces.
4.
Click Stop to stop capturing.
Troubleshooting
5.
Click Export to open the file download window, and then save the file to your local
system.
To capture packets using the Ethernet software:
Connect the Internet port of the IP phone and the PC to the same HUB, and then use
Sniffer, Ethereal or Wireshark software to capture the signal traffic.
The IP phone provides a troubleshooting feature called “Watch Dog”, which helps you
monitor the IP phone status and provides the ability to get stack traces from the last time
the IP phone failed. If Watch Dog feature is enabled, the IP phone will automatically
reboot when it detects a fatal failure. This feature can be configured using the
configuration files or via web user interface.
You can use the “watch_dog.enable” parameter to configure watch dog feature in the
configuration files. For more information, refer to Watch Dog on page 398.
To configure watch dog feature via web user interface:
1.
Click on Settings->Preference.
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2.
Select the desired value from the pull-down list of Watch Dog.
3.
Click Confirm to accept the change.
Status indicators may consist of the power LED, MESSAGE key LED, line key indicator,
headset key indicator and the on-screen icon.
The following shows two examples of obtaining the phone information from status
indicators:

If a LINK failure of the IP phone is detected, a prompting message “Network
Unavailable” and the icon

will appear on the LCD screen.
If a voice mail is received, the MESSAGE key LED illuminates.
For more information on the icons, refer to Reading Icons on page 20.
Wrong configurations may have an impact on your phone use. You can export
configuration file to check the current configuration of the IP phone and troubleshoot if
necessary.
To export configuration file via web user interface:
1.
246
Click on Settings->Configuration.
Troubleshooting
2.
In the Export or Import Configuration block, click Export to open the file download
window, and then save the file to your local system.
This section describes solutions to common issues that may occur while using the IP
phone. Upon encountering a scenario not listed in this section, contact your Yealink
reseller for further support.
Do one of the following:

Ensure that the IP phone is properly plugged into a functional AC outlet.

Ensure that the IP phone is plugged into a socket controlled by a switch that is on.

If the IP phone is plugged into a power strip, try plugging it directly into a wall
outlet.

If your phone is PoE powered, ensure that you are using a PoE-compliant switch or
hub.
’
Do one of the following:

Ensure that the Ethernet cable is plugged into the Internet port on the IP phone and
the Ethernet cable is not loose.

Ensure that the Ethernet cable is not damaged.

Ensure that the IP address and related network parameters are set correctly.

Ensure that your network switch or hub is operational.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
“
”
The LCD screen prompts “No Service” message when there is no available SIP account
on the IP phone.
Do one of the following:

Ensure that an account is actively registered on the IP phone at the path
Menu->Status->More->Accounts.

Ensure that the SIP account parameters have been configured correctly.
Press the OK key when the IP phone is idle to check the basic information (e.g., IP
address, MAC address and firmware version).
’
Do one of the following:

Ensure that the target firmware is not the same as the current firmware.

Ensure that the target firmware is applicable to the IP phone model.

Ensure that the current or the target firmware is not protected.

Ensure that the power is on and the network is available in the process of
upgrading.

Ensure that the web browser is not closed or refreshed when upgrading firmware
via web user interface.
’
Check if the IP phone is configured to obtain the time and date from the NTP server
automatically. If your phone is unable to access the NTP server, configure the time and
date manually.
If you have poor sound quality/acoustics like intermittent voice, low volume, echo or
other noises, the possible reasons could be:

Users are seated too far out of recommended microphone range and sound faint,
or are seated too close to sensitive microphones and cause echo.

248
Intermittent voice is mainly caused by packet loss, due to network congestion, and
Troubleshooting
jitter, due to message recombination of transmission or receiving equipment (e.g.,
timeout handling, retransmission mechanism, buffer under run).

Noisy equipment, such as a computer or a fan, may cause voice interference. Turn
off any noisy equipment.

Line issues can also cause this problem; disconnect the old line and redial the call
to ensure another line may provide better connection.
A remote phone book is placed on a server, while a local phone book is placed on the
IP phone flash. A remote phone book can be used by everyone that can access the
server, while a local phone book can only be used by a specific phone. A remote phone
book is always used as a central phone book for a company; each employee can load
it to obtain the real-time data from the same server.
Both user name and register name are defined by the server. User name identifies the
account, while register name matched with a password is for authentication purposes.
Display name is the caller ID that will be displayed on the callee’s phone LCD screen.
Server configurations may override the local ones.
IP phones support remote reboot by a SIP NOTIFY message with “Event: check-sync”
header. When receiving a NOTIFY message with the parameter “reboot=true”, the IP
phone reboots immediately. The NOTIFY message is formed as shown:
NOTIFY sip:<user>@<dsthost> SIP/2.0
To: sip:<user>@<dsthost>
From: sip:sipsak@<srchost>
CSeq: 10 NOTIFY
Call-ID: 1234@<srchost>
Event: check-sync;reboot=true
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The IP phone only uses logo file in DOB format, as the DOB format file has a high
compression ratio (the size of the uncompressed file compared to that of the
compressed file) and can be stored in smaller space. Tools for converting BMP format to
DOB format are available. For more information, refer to Yealink_SIP-T2
Series_T19P_T4_Series_IP_Phones_Auto_Provisioning_Guide.
Press the volume key to increase or decrease the ringer volume when the phone is idle,
or to adjust the volume of engaged audio device (handset, speakerphone or headset)
when there is an active call in progress.
IP phones manufactured before February 2010 will use the power adapter preferentially,
while those made later will use PoE preferentially.
Auto provisioning refers to the update of IP phones, including update on configuration
parameters, local phone book, firmware and so on. You can use auto provisioning on a
single phone, but it makes more sense in mass deployment.
Plug and Play (PnP) is a method for IP phones to acquire the provisioning server address.
With PnP enabled, the IP phone broadcasts the PnP SUBCRIBE message to obtain a
provisioning server address during startup. Any SIP server recognizing the message will
respond with the preconfigured provisioning server address, so the IP phone will be
able to download the CFG files from the provisioning server. PnP depends on support
from a SIP server.
250
Troubleshooting
’
Do one of the following:

Ensure that the configuration is set correctly.

Reboot the IP phone. Some configurations require a reboot to take effect.

Ensure that the configuration is applicable to the IP phone model.

The configuration may depend on support from a server.
“
”
“
”
They are codes that the IP phone sends to the server when a certain action takes place.
On code is used to activate a feature on the server side, while off code is used to
deactivate a feature on the server side.
For example, if you set the Always Forward on code to be *78 (may vary on different
servers), and the target number to be 201. When you enable Always Forward on the IP
phone, the IP phone sends *78201 to the server, and then the server will enable Always
Forward feature on the server side, hence being able to get the right status of the
extension.
Do one of the following:

Reset another available IP address for the IP phone.

Check network configuration via phone user interface at the path
Menu->Settings->Advanced Settings->Network->WAN Port->IPv4. If Static IP
Client is selected, select DHCP IP Client instead.
Reset your phone to factory configurations after you have tried all troubleshooting
suggestions but do not solve the problem. Note that all custom settings will be
overwritten after resetting.
To reset the IP phone via web user interface:
1.
Click on Settings->Upgrade.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2.
Click Reset to Factory Reset in the Reset to Factory Setting field.
The web user interface prompts the message “Do you want to reset to factory?”.
3.
Click OK to confirm the resetting.
The phone will be reset to factory sucessfully after startup.
Note
Reset of your phone may take a few minutes. Do not power off until the phone starts up
successfully.
Factory reset can restore the original password. All custom settings will be overwritten
after reset.
Phone Model
SIP-T28P
SIP-T26P
SIP-T22P
252
LCD
XML
Logo
Line
Memory
Display
Key
Key
6
10
Support
Support
3
10
Support
Support
3
/
Support
Support
320*160
236*82
pixel
pixel
132*64
132*64
pixel
pixel
132*64
132*64
pixel
pixel
SMS
Browser
Troubleshooting
Phone Model
SIP-T21P
LCD
Logo
Line
Memory
Display
Key
Key
2
/
Support
2
/
/
/
/
Support
132*64
132*64
pixel
pixel
SMS
XML
Browser
Support
3-line
(2*15
SIP-T20P
characte
rs and
Text log
Support
(Non UI)
an icon
line)
SIP-T19P
132*64
132*64
pixel
pixel
Support
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
254
Appendix
802.1x--an IEEE Standard for port-based Network Access Control (PNAC). It is a part of
the IEEE 802.1 group of networking protocols. It provides an authentication mechanism
to devices wishing to attach to a LAN or WLAN.
ACD (Automatic Call Distribution)--used to distribute calls from large volumes of
incoming calls to the registered IP phone users.
ACS (Auto Configuration server)--responsible for auto-configuration of the Central
Processing Element (CPE).
Cryptographic Key--a piece of variable data that is fed as input into a cryptographic
algorithm to perform operations such as encryption and decryption, or signing and
verification.
DHCP (Dynamic Host Configuration Protocol)--built on a client-server model, where
designated DHCP server hosts allocate network addresses and deliver configuration
parameters to dynamically configured hosts.
DHCP Option--can be configured for specific values and enabled for assignment and
distribution to DHCP clients based on server, scope, class or client-specific levels.
DNS (Domain Name System)--a hierarchical distributed naming system for computers,
services, or any resource connected to the Internet or a private network.
EAP-MD5 (Extensible Authentication Protocol-Message Digest Algorithm 5)--only
provides authentication of the EAP peer to the EAP server but not mutual authentication.
EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) –provides for
mutual authentication, integrity-protected cipher suite negotiation between two
endpoints.
PEAP-MSCHAPv2 (Protected Extensible Authentication Protocol-Microsoft Challenge
Handshake Authentication Protocol version 2) –provides for mutual authentication, but
does not require a client certificate on the IP phone.
FAC (Feature Access Code)--special patterns of characters that are dialed from a
phone keypad to invoke particular features.
HTTP (Hypertext Transfer Protocol)--used to request and transmit data on the World
Wide Web.
HTTPS (Hypertext Transfer Protocol over Secure Socket Layer)--a widely-used
communications protocol for secure communication over a network.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
IEEE (Institute of Electrical and Electronics Engineers)--a non-profit professional
association headquartered in New York City that is dedicated to advancing
technological innovation and excellence.
LAN (Local Area Network)--used to interconnects network devices in a limited area such
as a home, school, computer laboratory, or office building.
MIB (Management Information Base)--a virtual database used for managing the
entities in a communications network.
OID (Object Identifier)--assigned to an individual object within a MIB.
PnP (Plug and Play)--a term used to describe the characteristic of a computer bus, or
device specification, which facilitates the discovery of a hardware component in a
system, without the need for physical device configuration, or user intervention in
resolving resource conflicts.
ROM (Read-only Memory)--a class of storage medium used in computers and other
electronic devices.
RTP (Real-time Transport Protocol)--provides end-to-end service for real-time data.
TCP (Transmission Control Protocol)--a transport layer protocol used by applications that
require guaranteed delivery.
UDP (User Datagram Protocol)--a protocol offers non-guaranteed datagram delivery.
URI (Uniform Resource Identifier)--a compact sequence of characters that identifies an
abstract or physical resource.
URL (Uniform Resource Locator)--specifies the address of an Internet resource.
VLAN (Virtual LAN)-- a group of hosts with a common set of requirements, which
communicate as if they were attached to the same broadcast domain, regardless of
their physical location.
VoIP (Voice over Internet Protocol)--a family of technologies used for the delivery of
voice communications and multimedia sessions over IP networks.
WLAN (Wireless Local Area Network)--a type of local area network that uses
high-frequency radio waves rather than wires to communicate between nodes.
XML-RPC (Remote Procedure Call Protocol)--which uses XML to encode its calls and
HTTP as a transport mechanism.
256
Appendix
Time Zone
Time Zone Name
−11:00
Samoa
−10:00
United States-Hawaii-Aleutian
−10:00
United States-Alaska-Aleutian
−09:00
United States-Alaska Time
−08:00
Canada(Vancouver, Whitehorse)
−08:00
Mexico(Tijuana, Mexicali)
−08:00
United States-Pacific Time
−07:00
Canada(Edmonton, Calgary)
−07:00
Mexico(Mazatlan, Chihuahua)
−07:00
United States-Mountain Time
−07:00
United States-MST no DST
−06:00
Canada-Manitoba(Winnipeg)
−06:00
Chile(Easter Islands)
−06:00
Mexico(Mexico City, Acapulco)
−06:00
United States-Central Time
−05:00
Bahamas(Nassau)
−05:00
Canada(Montreal, Ottawa, Quebec)
−05:00
Cuba(Havana)
−05:00
United States-Eastern Time
−04:30
Venezuela(Caracas)
−04:00
Canada(Halifax, Saint John)
−04:00
Chile(Santiago)
−04:00
Paraguay(Asuncion)
−04:00
United Kingdom-Bermuda(Bermuda)
−04:00
United Kingdom(Falkland Islands)
−04:00
Trinidad&Tobago
−03:30
Canada-New Foundland(St.Johns)
−03:00
Denmark-Greenland(Nuuk)
−03:00
Argentina(Buenos Aires)
−03:00
Brazil(no DST)
−03:00
Brazil(DST)
−02:00
Brazil(no DST)
−01:00
Portugal(Azores)
0
GMT
0
Greenland
0
Denmark-Faroe Islands(Torshavn)
0
Ireland(Dublin)
0
Portugal(Lisboa, Porto, Funchal)
0
Spain-Canary Islands(Las Palmas)
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Time Zone
258
Time Zone Name
0
United Kingdom(London)
0
Morocco
+01:00
Albania(Tirane)
+01:00
Austria(Vienna)
+01:00
Belgium(Brussels)
+01:00
Caicos
+01:00
Chad
+01:00
Spain(Madrid)
+01:00
Croatia(Zagreb)
+01:00
Czech Republic(Prague)
+01:00
Denmark(Kopenhagen)
+01:00
France(Paris)
+01:00
Germany(Berlin)
+01:00
Hungary(Budapest)
+01:00
Italy(Rome)
+01:00
Luxembourg(Luxembourg)
+01:00
Macedonia(Skopje)
+01:00
Netherlands(Amsterdam)
+01:00
Namibia(Windhoek)
+02:00
Estonia(Tallinn)
+02:00
Finland(Helsinki)
+02:00
Gaza Strip(Gaza)
+02:00
Greece(Athens)
+02:00
Israel(Tel Aviv)
+02:00
Jordan(Amman)
+02:00
Latvia(Riga)
+02:00
Lebanon(Beirut)
+02:00
Moldova(Kishinev)
+02:00
Russia(Kaliningrad)
+02:00
Romania(Bucharest)
+02:00
Syria(Damascus)
+02:00
Turkey(Ankara)
+02:00
Ukraine(Kyiv, Odessa)
+03:00
East Africa Time
+03:00
Iraq(Baghdad)
+03:00
Russia(Moscow)
+03:30
Iran(Teheran)
+04:00
Armenia(Yerevan)
+04:00
Azerbaijan(Baku)
+04:00
Georgia(Tbilisi)
+04:00
Kazakhstan(Aktau)
+04:00
Russia(Samara)
Appendix
Time Zone
Time Zone Name
+04:30
Afghanistan
+05:00
Kazakhstan(Aqtobe)
+05:00
Kyrgyzstan(Bishkek)
+05:00
Pakistan(Islamabad)
+05:00
Russia(Chelyabinsk)
+05:30
India(Calcutta)
+06:00
Kazakhstan(Astana, Almaty)
+06:00
Russia(Novosibirsk, Omsk)
+07:00
Russia(Krasnoyarsk)
+07:00
Thailand(Bangkok)
+08:00
China(Beijing)
+08:00
Singapore(Singapore)
+08:00
Australia(Perth)
+09:00
Korea(Seoul)
+09:00
Japan(Tokyo)
+09:30
Australia(Adelaide)
+09:30
Australia(Darwin)
+10:00
Australia(Sydney, Melbourne, Canberra)
+10:00
Australia(Brisbane)
+10:00
Australia(Hobart)
+10:00
Russia(Vladivostok)
+10:30
Australia(Lord Howe Islands)
+11:00
New Caledonia(Noumea)
+12:00
New Zealand(Wellington, Auckland)
+12:45
New Zealand(Chatham Islands)
+13:00
Tonga(Nukualofa)
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
This appendix describes configuration parameters in the configuration files for each
feature. The configuration files are <y0000000000xx>.cfg and <MAC>.cfg.
You can set parameters in the configuration files to configure IP phones. The
<y0000000000xx>.cfg and <MAC>.cfg files are stored on the provisioning server. The
IP phone checks for configuration files and looks for resource files when restarting the IP
phone. The <y0000000000xx>.cfg file stores configurations for all phones of the same
model. The <MAC>.cfg file stores configurations for a specific IP phone with that MAC
address.
Configuration changes made in the <MAC>.cfg file override the configuration settings
in the <y0000000000xx>.cfg file.
Parameter-
Configuration File
network.internet_port.type
<MAC>.cfg
Configures the Internet port type.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Valid values are:
Range
0-DHCP
1-PPPoE
2-Static IP Address
Example
network.internet_port.type= 0
Parameter-
Configuration File
network.static_dns_enable
<y0000000000xx>.cfg
Description
260
Enables or disables the phone to use manually
configured static IPv4 DNS when the
Appendix
parameter “network.internet_port.type” is set
to 0 (DHCP).
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
network.static_dns_enable= 0
Parameter-
Configuration File
network.internet_port.type
<MAC>.cfg
Configures the Internet port type.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Valid values are:
Range
0-DHCP
1-PPPoE
2-Static IP Address
Example
network.internet_port.type = 2
Parameter-
Configuration File
network.ip_address_mode
<MAC>.cfg
Configures the IP address mode.
IP phones support to use the IPv4 address only,
the IPv6 address only or both IPv4 and IPv6
Description
addresses.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Format
Integer
Default Value
0
Valid values are:
Range
0-IPv4
1-IPv6
2-IPv4&IPv6
Example
network.ip_address_mode = 0
Parameter-
Configuration File
network.internet_port.ip
<MAC>.cfg
Configures the IP address when the Internet
port type is configured as Static IP Address
and the IP address mode is configured as IPv4
Description
or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
IPv4 Address
Default Value
Blank
Range
Not Applicable
Example
network.internet_port.ip = 192.168.1.20
Parameter-
Configuration File
network.internet_port.mask
<MAC>.cfg
Configures the subnet mask when the Internet
port type is configured as Static IP Address
and the IP address mode is configured as IPv4
Description
or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
262
Format
Subnet Mask
Default Value
Blank
Range
Not Applicable
Example
network.internet_port.mask = 255.255.255.0
Appendix
Parameter-
Configuration File
network.internet_port.gateway
<MAC>.cfg
Configures the default gateway when the
Internet port type is configured as Static IP
Address and the IP address mode is
Description
configured as IPv4 or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
IPv4 Address
Default Value
Blank
Range
Not Applicable
Example
network.internet_port.gateway =
192.168.1.254
Parameter-
Configuration File
network.primary_dns
<MAC>.cfg
Configures the primary DNS server when the
Internet port type is configured as Static IP
Address and the IP address mode is
Description
configured as IPv4 or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
IPv4 Address
Default Value
Blank
Range
Not Applicable
Example
network.primary_dns = 202.101.103.55
Parameter-
Configuration File
network.secondary_dns
<MAC>.cfg
Configures the secondary DNS server when
the Internet port type is configured as Static IP
Description
Address and the IP address mode is
configured as IPv4 or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
effect.
Format
IPv4 Address
Default Value
Blank
Range
Not Applicable
Example
network.secondary_dns = 202.101.103.54
Parameter-
Configuration File
network.internet_port.type
<MAC>.cfg
Configures the Internet port type.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Valid values are:
Range
0-DHCP
1-PPPoE
2-Static IP Address
Example
network.internet_port.type= 1
Parameter-
Configuration File
network.pppoe.user
<y0000000000xx>.cfg
Configures the PPPoE user name when the
Internet port type is configured as PPPoE and
the IP address mode is configured as IPv4 or
Description
IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
264
Format
String
Default Value
Blank
Range
String within 32 characters
Example
network.pppoe.user = xmyealink
Appendix
Parameter-
Configuration File
network.pppoe.password
<y0000000000xx>.cfg
Configures the PPPoE password when the
Internet port type is configured as PPPoE and
the IP address mode is configured as IPv4 or
Description
IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
network.pppoe.password = yealink123
Internet Port Transmission Method
Parameter-
Configuration File
network.internet_port.speed_d
<y0000000000xx>.cfg
uplex
Configures the transmission method of Internet
port.
Description
Note: We recommend that you do not change
this parameter. If you change this parameter,
the IP phone will reboot to make the change
take effect.
Format
Integer
Default Value
0
Valid values are:
0-Auto negotiate
Range
1-Full duplex, 10Mbps
2-Full duplex, 100Mbps
3-Half duplex, 10Mbps
4-Half duplex, 100Mbps
Example
network.internet_port.speed_duplex = 0
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
PC Port Transmission Method
Parameter-
Configuration File
network.pc_port.speed_duplex
<y0000000000xx>.cfg
Configures the transmission method of PC port.
Note: We recommend that you do not change
Description
this parameter. If you change this parameter,
the IP phone will reboot to make the change
take effect.
Format
Integer
Default Value
0
Valid values are:
0-Auto negotiate
Range
1-Full duplex, 10Mbps
2-Full duplex, 100Mbps
3-Half duplex, 10Mbps
4-Half duplex, 100Mbps
Example
network.pc_port.speed_duplex = 0
Parameter-
Configuration File
network.PC_port.enable
<y0000000000xx>.cfg
Enables or disables the PC port.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Auto Negotiation
266
Example
network.PC_port.enable = 1
Parameter-
Configuration File
network.bridge_mode
<y0000000000xx>.cfg
Description
Configures the PC port mode.
Appendix
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is not applicable to SIP-T19P and
SIP-T21P IP phones. SIP-T19P and SIP-T21P IP
phones only support bridge mode for PC
connection.
Format
Integer
Default Value
1
Valid values are:
Range
0-Router
1-Bridge
Example
network.bridge_mode = 1
Parameter-
Configuration File
network.pc_port.ip
<y0000000000xx>.cfg
Configures the IP address for the PC port when
the PC port is configured as Router.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is not applicable to SIP-T19P and
SIP-T21P IP phones.
Format
IP Address
Default Value
10.0.0.1
Range
Not Applicable
Example
network.pc_port.ip = 10.0.0.1
Parameter-
Configuration File
network.pc_port.mask
<y0000000000xx>.cfg
Configures the subnet mask for the PC port
when the PC port is configured as Router.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is not applicable to SIP-T19P and
SIP-T21P IP phones.
Format
IP Address
Default Value
255.255.255.0
Range
Not Applicable
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Example
network.pc_port.mask = 255.255.255.0
Parameter-
Configuration File
network.pc_port.dhcp_server
<y0000000000xx>.cfg
Enables or disables the DHCP service for the
PC attached to the PC port when the PC port is
configured as Router.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is not applicable to SIP-T19P and
SIP-T21P IP phones.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
network.pc_port.dhcp_server = 1
Parameter-
Configuration File
network.dhcp.start_ip
<y0000000000xx>.cfg
Configures the start IP address that the IP
phone assigns for the PC attached to the PC
port when the PC port is configured as Router.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is not applicable to SIP-T19P and
SIP-T21P IP phones.
Format
IP Address
Default Value
10.0.0.10
Range
Not Applicable
Example
network.dhcp.start_ip = 10.0.0.10
Parameter-
Configuration File
network.dhcp.end_ip
<y0000000000xx>.cfg
Description
268
Configures the end IP address that the IP
phone assigns for the PC attached to the PC
Appendix
port when the PC port is configured as Router.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is not applicable to SIP-T19P and
SIP-T21P IP phones.
Format
IP Address
Default Value
10.0.0.100
Range
Not Applicable
Example
network.dhcp.end_ip = 10.0.0.100
Replace Rule
Parameter-
Configuration File
dialplan.replace.prefix.X
<y0000000000xx>.cfg
Description
Configures the string you want to replace.
X ranges from 1 to 100.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
dialplan.replace.prefix.1 = 123
Parameter-
Configuration File
dialplan.replace.replace.X
<y0000000000xx>.cfg
Configures the alternate string instead of what
Description
the user enters.
X ranges from 1 to 100.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
dialplan.replace.replace.1 = 1
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Parameter-
Configuration File
dialplan.replace.line_id.X
<y0000000000xx>.cfg
Configures the desired line to apply this
replace rule. The digit 0 stands for all lines.
Description
X ranges from 1 to 100.
Note: Multiple line IDs are separated by
commas. It is not applicable to SIP-T19P IP
phones.
Format
Integer
Default Value
Blank (for all lines)
Valid values are:
Range
0 to 6 (for SIP-T28P)
0 to 3 (for SIP-T26P/T22P)
0 to 2 (for SIP-T21P/T20P)
Example
dialplan.replace.line_id.1 = 1,2
Dial-now
Parameter-
Configuration File
dialplan.dialnow.rule.X
<y0000000000xx>.cfg
Configures the string used to match the
numbers entered by the user.
When entered numbers match the predefined
Description
dial-now rule, the IP phone will automatically
dial out the numbers without pressing the send
key.
X ranges from 1 to 100.
Format
String
Default Value
Blank
Range
String within 511 characters
Example
dialplan.dialnow.rule.1 = 123
Parameter-
Configuration File
dialplan.dialnow.line_id.X
<y0000000000xx>.cfg
Configures the desired line to apply this
Description
dial-now rule. The digit 0 stands for all lines.
X ranges from 1 to 100.
Note: Multiple line IDs are separated by
270
Appendix
commas. It is not applicable to SIP-T19P IP
phones.
Format
Integer
Default Value
Blank (for all lines)
Valid values are:
Range
0 to 6 (for SIP-T28P)
0 to 3 (for SIP-T26P/T22P)
0 to 2 (for SIP-T21P/T20P)
Example
dialplan.dialnow.line_id.1 = 1,2
Parameter-
Configuration File
phone_setting.dialnow_delay
<y0000000000xx>.cfg
Configures the delay time (in seconds) for the
dial-now rule.
Description
When entered numbers match the predefined
dial-now rule, the IP phone will automatically
dial out the entered number after the specified
delay time.
Format
Integer
Default Value
1
Range
1 to 14
Example
phone_setting.dialnow_delay = 1
Area Code
Parameter-
Configuration File
dialplan.area_code.code
<y0000000000xx>.cfg
Description
Configures the area code to add before the
entered numbers.
Format
String
Default Value
Blank
Range
String within 16 characters
Example
dialplan.area_code.code = 010
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Parameter-
Configuration File
dialplan.area_code.min_len
<y0000000000xx>.cfg
Description
Configures the minimum length of the entered
numbers.
Format
Integer
Default Value
1
Range
1 to 15
Example
dialplan.area_code.min_len = 1
Parameter-
Configuration File
dialplan.area_code.max_len
<y0000000000xx>.cfg
Configures the maximum length of the entered
Description
numbers.
Note: The value must be larger than the
minimum length.
Format
Integer
Default Value
15
Range
1 to 15
Example
dialplan.area_code.max_len = 15
Parameter-
Configuration File
dialplan.area_code.line_id
<y0000000000xx>.cfg
Configures the desired line to apply this area
code rule. The digit 0 stands for all lines.
Description
Note: Multiple line IDs are separated by
commas. It is not applicable to SIP-T19P IP
phones.
Format
Integer
Default Value
Blank (for all lines)
Valid values are:
Range
0 to 6 (for SIP-T28P)
0 to 3 (for SIP-T26P/T22P)
0 to 2 (for SIP-T21P/T20P)
Example
272
dialplan.area_code.line_id = 1,2
Appendix
Block Out
Parameter-
Configuration File
dialplan.block_out.number.X
<y0000000000xx>.cfg
Description
Configures the block out numbers.
X ranges from 1 to 10.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
dialplan.block_out.number.1 = 1234
Parameter-
Configuration File
dialplan.block_out.line_id.X
<y0000000000xx>.cfg
Configures the desired line to apply this block
out rule. The digit 0 stands for all lines.
Description
X ranges from 1 to 10.
Note: Multiple line IDs are separated by
commas. It is not applicable to SIP-T19P IP
phones.
Format
Integer
Default Value
Blank (for all lines)
Valid values are:
Range
0 to 6 (for SIP-T28P)
0 to 3 (for SIP-T26P/T22P)
0 to 2 (for SIP-T21P/T20P)
Example
dialplan.block_out.line_id.1 = 1,2,3
Parameter-
Configuration File
phone_setting.common_power
<y0000000000xx>.cfg
_led_enable
Description
Enables or disables the power indicator LED to
be turned on.
Format
Boolean
Default Value
1
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Valid values are:
Range
0-Disabled (power indicator LED is off)
1-Enabled (power indicator LED is solid green)
Example
phone_setting.common_power_led_enable =
1
Parameter-
Configuration File
phone_setting.ring_power_led_
<y0000000000xx>.cfg
flash_enable
Enables or disables the power indicator LED to
flash when the phone receives an incoming
call.
Description
If it is set to 0, the status of the power indicator
LED is determined by the value of the
parameter
“phone_setting.common_power_led_enable”.
Format
Boolean
Default Value
1
Valid values are:
0-Disabled (power indicator LED does not
Range
flash)
1-Enabled (power indicator LED fast flashes
(300ms) green)
Example
phone_setting.ring_power_led_flash_enable =
1
Parameter-
Configuration File
phone_setting.mail_power_led_
<y0000000000xx>.cfg
flash_enable
Enables or disables the power indicator LED to
flash when the phone receives a voice mail or
a text message.
Description
If it is set to 0, the status of the power indicator
LED is determined by the value of the
parameter
“phone_setting.common_power_led_enable”.
Format
274
Boolean
Appendix
Default Value
0
Valid values are:
0-Disabled (power indicator LED does not
Range
flash)
1-Enabled (power indicator LED slow flashes
(1000ms) green)
Example
phone_setting.mail_power_led_flash_enable
=0
Parameter-
Configuration File
phone_setting.mute_power_led
<y0000000000xx>.cfg
_flash_enable
Enables or disables the power indicator LED to
flash when a call is mute.
Description
If it is set to 0, the status of the power indicator
LED is determined by the value of the
parameter
“phone_setting.common_power_led_enable”.
Format
Boolean
Default Value
1
Valid values are:
0-Disabled (power indicator LED does not
Range
flash)
1-Enabled (power indicator LED fast flashes
(300ms) green)
Example
phone_setting.mute_power_led_flash_enable
=1
Parameter-
Configuration File
phone_setting.hold_and_held_
<y0000000000xx>.cfg
power_led_flash_enable
Enables or disables the power indicator LED to
flash when a call is placed on hold or is held.
Description
If it is set to 0, the status of the power indicator
LED is determined by the value of the
parameter
“phone_setting.common_power_led_enable”.
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Format
Boolean
Default Value
0
Valid values are:
0-Disabled (power indicator LED does not
Range
flash)
1-Enabled (power indicator LED fast flashes
(500ms) green)
Example
phone_setting.hold_and_held_power_led_flas
h_enable = 0
Parameter-
Configuration File
phone_setting.talk_and_dial_p
<y0000000000xx>.cfg
ower_led_enable
Enables or disables the power indicator LED to
be turned on when the phone is busy.
Description
If it is set to 0, the status of the power indicator
LED is determined by the value of the
parameter
“phone_setting.common_power_led_enable”.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled (power indicator LED is off)
1-Enabled ( power indicator LED is solid
green)
Example
phone_setting.talk_and_dial_power_led_enab
le = 1
Parameter-
Configuration File
phone_setting.contrast
<y0000000000xx>.cfg
Configures the contrast of the LCD screen.
For SIP-T28P IP phones, it configures the LCD’s
Description
contrast of the IP phone and connected EXP39.
For SIP-T26P IP phones, it configures the LCD’s
contrast of the connected EXP39 only.
276
Appendix
For SIP-T19P and SIP-T21P IP phones, it
configures the LCD’s contrast of the IP phone
only.
Note: We recommend that you set the contrast
of the LCD screen to 6 as a more comfortable
level. It is only applicable to SIP-T19P, SIP-T21P
and SIP-T28P IP phones, and EXP39 connected
to SIP-T26P and SIP-T28P IP phones.
Format
Integer
Default Value
6
Range
1 to 10
Example
phone_setting.contrast = 6
Parameter-
Configuration File
phone_setting.active_backlight
<y0000000000xx>.cfg
_level
Configures the backlight idle intensity used to
adjust the backlight intensity of the LCD screen
Description
Level 3 is the brightest.
Note: It is only applicable to SIP-T28P IP phones
and the connected EXP39.
Format
Integer
Default Value
2
Range
1 to 3
Example
phone_setting.active_backlight_level = 2
Parameter-
Configuration File
phone_setting.backlight_time
<y0000000000xx>.cfg
Configures the delay time to turn off the
backlight when the IP phone is inactive.
Description
If it is set to 60 (60s), the LCD backlight is
turned off when the IP phone is inactive for 60
seconds.
Note: It is not applicable to SIP-T19P, SIP-T20P
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and SIP-T21P IP phones.
Format
Integer
Default Value
30
Valid values are:
0-Always off
1-Always on
15-15s
Range
30-30s
60-60s
120-120s
300-300s
600-600s
1800-1800s
Example
phone_setting.backlight_time = 30
Parameter-
Configuration File
security.user_password
<y0000000000xx>.cfg
Configures the password of the user for web
server access.
Description
The IP phone uses “user” as the default user
password.
Note: IP phones support ASCII characters
32-126(0x20-0x7E) only in passwords.
Format
username:new password
Default Value
user
Range
String within 32 characters
Example
security.user_password = user:password123
Parameter-
Configuration File
security.user_password
<y0000000000xx>.cfg
Configures the password of the administrator
Description
for web server access.
The IP phone uses “admin” as the default
278
Appendix
administrator password.
Note: IP phones support ASCII characters
32-126(0x20-0x7E) only in passwords.
Format
administrator username:new password
Default Value
admin
Range
String within 32 characters
Example
security.user_password = admin:password000
Parameter-
Configuration File
phone_setting.lock
<y0000000000xx>.cfg
Configures the type of phone lock.
Menu Key: The Menu soft key and MESSAGE
key are locked (For SIP-T20P, the MENU key is
locked).
Function Keys: MESSAGE, RD, CONF, HOLD,
MUTE, TRAN, OK, X, navigation keys, soft keys,
line keys and memory keys are locked (For
SIP-T22P/T21P, CONF, HOLD, MUTE and
memory keys do not exist; For SIP-T20P, the
MUTE key, soft keys and memory keys do not
exist, but the additional MENU and Directory
keys are locked; For SIP-T19P, CONF, HOLD, OK,
X, memory keys and line keys do not exist, but
Description
the additional √ key is locked).
All Keys: All keys are locked except the volume
key. You are only allowed to dial emergency
numbers, reject incoming calls by pressing the
X key, answer incoming calls by lifting the
handset, pressing the Speakerphone key, the
HEADSET key or the OK key, place an active
call on hold by pressing the Hold soft key or
the HOLD key, resume the held call by
pressing the Resume soft key or the HOLD key,
and end the call by hanging up the handset,
pressing the Speakerphone key or pressing
the X key (For SIP-T22P/T21P, HOLD key does
not exist; For SIP-T20P, soft keys do not exist. For
SIP-T19P, HOLD and X keys do not exist).
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If it is set to 0 (Disabled), IP phone lock feature
is disabled.
Format
Integer
Default Value
0
Valid values are:
0-Disabled
Range
1-Menu Key
2-Function Keys
3-All Keys
Example
phone_setting.lock = 1
Parameter-
Configuration File
phone_setting.phone_lock.unlo
<y0000000000xx>.cfg
ck_pin
Configures a new unlock PIN. Once the IP
Description
phone is locked, you can use the default
password “123” to unlock it.
Format
numeric characters
Default Value
123
Range
characters within 15 digits
Example
phone_setting.phone_lock.unlock_pin = 123
Parameter-
Configuration File
phone_setting.phone_lock.lock
<y0000000000xx>.cfg
_time_out
Configures the IP phone to automatically lock
the keypad after a delay time (in seconds).
If it is set to 0 (0s), the keypad will not be
Description
locked automatically. In this case, you need to
long press the pound key to lock the keypad.
Note: This parameter works only if the IP
phone lock type is preset.
280
Format
Integer
Default Value
0
Range
0 to 3600
Example
phone_setting.phone_lock.lock_time_out = 8
Appendix
Parameter-
Configuration File
local_time.manual_time_enabl
<MAC>.cfg
e
Description
Configures the phone to obtain time from NTP
server or manual settings.
Format
Integer
Default Value
1
Valid values are:
Range
0-Manual
1-NTP
Example
local_time.manual_time_enable = 1
NTP Server
Parameter-
Configuration File
local_time.manual_ntp_srv_prior
<MAC>.cfg
Description
Enables or disables the phone to use
manually configured NTP server preferentially.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled (use the NTP server obtained by
DHCP preferentially)
1-Enabled
Example
local_time.manual_ntp_srv_prior = 0
Parameter-
Configuration File
local_time.ntp_server1
<MAC>.cfg
Description
Configures the IP address or the domain name
of the primary NTP server.
Format
IP Address or Domain Name
Default Value
cn.pool.ntp.org
Range
String within 99 characters
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Example
local_time.ntp_server1 = cn.pool.ntp.org
Parameter-
Configuration File
local_time.ntp_server2
<MAC>.cfg
Configures the IP address or the domain name
of the secondary NTP server. If the primary NTP
Description
server is not configured or cannot be
accessed, the IP phone will request the time
and date from the secondary NTP server.
Format
IP Address or Domain Name
Default Value
cn.pool.ntp.org
Range
String within 99 characters
Example
local_time.ntp_server2 = cn.pool.ntp.org
Parameter-
Configuration File
local_time.interval
<MAC>.cfg
Configures the IP phone to update time and
Description
date from the NTP server at regular intervals
(in seconds).
Format
Integer
Default Value
1000
Range
15 to 86400
Example
local_time.interval = 1000
Time Zone
Parameter-
Configuration File
local_time.time_zone
<MAC>.cfg
Configures the time zone.
Description
For more available time zones, refer to
Appendix B: Time Zones on page 257.
282
Format
String
Default Value
+8
Range
-11 to +13
Example
local_time.time_zone = +8
Appendix
Parameter-
Configuration File
local_time.time_zone_name
<MAC>.cfg
Configures the desired time zone name.
Description
For more available time zone names, refer to
Appendix B: Time Zones on page 257.
Format
String
Default Value
China(Beijing)
Range
String within 32 characters
Example
local_time.time_zone_name = China(Beijing)
DST
Parameter-
Configuration File
local_time.summer_time
<MAC>.cfg
Description
Enables or disables Daylight Saving Time
(DST) feature.
Format
Integer
Default Value
2
Valid values are:
Range
0-Disabled
1-Enabled
2-Automatic
Example
local_time.summer_time = 2
Parameter-
Configuration File
local_time.dst_time_type
<MAC>.cfg
Configures the DST type.
Description
Note: It works only if the parameter
“local_time.summer_time” is set to 1
(Enabled).
Format
Integer
Default Value
0
Valid values are:
Range
0-By Date
1-By Week
Example
local_time.dst_time_type = 0
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Parameter-
Configuration File
local_time.start_time
<MAC>.cfg
Configures the time to start DST.
If “local_time.dst_time_type” is set to 0 (By
Date), use the mapping:
MM: 1=Jan, 2=Feb,…, 12=Dec
DD:1=the first day in a month,…, 31= the last
day in a month
HH:0=1am, 1=2am,…, 23=12pm
If “local_time.dst_time_type” is set to 1 (By
Description
Week), use the mapping:
Month: 1=Jan, 2=Feb,…, 12=Dec
Week of Month: 1=the first week in a month,…,
5=the last week in a month
Day of Week: 1=Mon, 2=Tues,…, 7=Sun
Hour of Day: 0=1am, 1=2am,…, 23=12pm
Note: It works only if the parameter
“local_time.summer_time” is set to 1
(Enabled).
The value formats are:
Format

MM/DD/HH (For By Date)

Month/Week of Month/Day of Week/Hour
of Day (For By Week)
Default Value
Range
1/1/0
1to 12/1 to 31/0 to 23 (for By Date)
1 to 12/1 to 5/1 to 7/0 to 23 (for By Week)
Example
local_time.start_time = 1/1/0
Parameter-
Configuration File
local_time.end_time
<MAC>.cfg
Configures the time to end DST.
If “local_time.dst_time_type” is set to 0 (By
Date), use the mapping:
Description
MM: 1=Jan, 2=Feb,…, 12=Dec
DD:1=the first day in a month,…, 31= the last
day in a month
HH:0=1am, 1=2am,…, 23=12pm
284
Appendix
If “local_time.dst_time_type” is set to 1 (By
Week), use the mapping:
Month: 1=Jan, 2=Feb,…, 12=Dec
Week of Month: 1=the first week in a month,…,
5=the last week in a month
Day of Week: 1=Mon, 2=Tues,…, 7=Sun
Hour of Day: 0=1am, 1=2am,…, 23=12pm
Note: It works only if the parameter
“local_time.summer_time” is set to 1
(Enabled).
The value formats are:
Format

MM/DD/HH (For By Date)

Month/Week of Month/Day of Week/Hour
of Day (For By Week)
Default Value
Range
12/31/23
1to 12/1 to 31/0 to 23 (For By Date)
1 to 12/1 to 5/1 to 7/0 to 23 (For By Week)
Example
local_time.end_time = 12/31/23
Parameter-
Configuration File
local_time.dhcp_time
<MAC>.cfg
Enables or disables the phone to update time
Description
with the offset time obtained from the DHCP
server.
Note: It is only available to offset from GMT 0.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
local_time.dhcp_time = 0
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Parameter-
Configuration File
local_time.offset_time
<MAC>.cfg
Description
Configures the offset time (in minutes).
Format
Integer
Default Value
Blank
Range
-300 to +300
Example
local_time.offset_time = 120
Time Format
Parameter-
Configuration File
local_time.time_format
<MAC>.cfg
Configures the time format.
If it is set to 0 (12 Hour), the time display will
Description
use 12 hour format.
If it is set to 1 (24 Hour), the time display will
use 24 hour format.
Format
Integer
Default Value
1
Valid values are:
Range
0-12 Hour
1-24 Hour
Example
local_time.time_format = 1
Date Format
Parameter-
Configuration File
local_time.date_format
<MAC>.cfg
Configures the date format.
Description
IP phones support various date formats. You
can change the desired format according to
your requirement.
Format
Integer
0
Default Value
Note: For SIP-T20P IP phones, the default value
is 7.
Range
286
For SIP-T28P/T26P/T21P/T22P/T19P IP phones:
Appendix
Valid values are:
0-WWW MMM DD
1-DD-MMM-YY
2-YYYY-MM-DD
3-DD/MM/YYYY
4-MM/DD/YY
5-DD MMM YYYY
6-WWW DD MMM
For SIP-T20P IP phones:
7-MM DD YY
8-DD MM YY
9-YY MM DD
Note: “WWW” represents the abbreviation of
the week, “DD” represents a two-digit day,
“MMM” represents the first three letters of the
month, “YYYY” represents a four-digit year,
and “YY” represents a two-digit year which is
not displayed on the LCD screen of SIP-T20P IP
phones.
Example
local_time.date_format = 0
Parameter-
Configuration File
gui_lang.url
<y0000000000xx>.cfg
Configures the access URL of the language
pack.
Note: The language packs you load are
Description
dependent on available language packs from
the provisioning server. You can download the
language pack to the phone user interface
only.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
download the language pack
Example
“lang+English.txt” from the provisioning
server 192.168.10.25.
gui_lang.url =
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http://192.168.10.25/lang+English.txt
Parameter-
Configuration File
lang.gui
<y0000000000xx>.cfg
Description
Configures the language used on the phone
user interface.
Format
String
Default Value
English
Valid values are:
English
Chinese_S (only applicable to SIP-T19P and
SIP-T21P IP phones)
Chinese_T (only applicable to SIP-T19P and
SIP-T21P IP phones)
Range
German
French
Italian
Portuguese
Polish
Spanish
Turkish
Example
lang.gui = English
Parameter-
Configuration File
lang.wui
<y0000000000xx>.cfg
Configures the language used on the web
user interface.
Note: The default language used on the web
Description
user interface depends on the language
preferences of your browser. If the language
of your browser is not supported by the IP
phone, the web user interface will use English
by default.
288
Format
String
Default Value
Blank
Range
Valid values are:
Appendix
English
Chinese_S (only applicable to SIP-T19P and
SIP-T21P IP phones)
German
French (not applicable to SIP-T19P and SIP-T21P
IP phones)
Italian
Portuguese (not applicable to SIP-T19P and
SIP-T21P IP phones)
Spanish (not applicable to SIP-T19P and
SIP-T21P IP phones)
Turkish
Example
lang.wui = English
Parameter-
Configuration File
phone_setting.lcd_logo.mode
<y0000000000xx>.cfg
Configures the logo mode of the LCD screen.
If it is set to 0 (Disabled), the IP phone is not
allowed to display a logo.
If it is set to 1 (System logo), the LCD screen
will display the system logo.
If it is set to 2 (Custom logo), the LCD screen
Description
will display the custom logo (you need to
upload a custom logo file to the phone).
For SIP-T20P IP phones:
Enables or disables a text logo.
If it is set to 0 (Disabled), the IP phone is not
allowed to display a text logo.
If it is set to 1 (Enabled), the LCD screen will
display the custom text logo.
Format
Integer
0
Default Value
Note: For SIP-T28 IP phones, the default value is
1.
Range
Valid values are:
0-Disabled
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
1-System logo
2-Custom logo
Note: For SIP-T28 IP phones, valid values are
1(System logo) and 2(Custom logo). For
SIP-T20P IP phones, valid values are
0(Disabled) and 1(Enabled).
Example
phone_setting.lcd_logo.mode = 1
Parameter-
Configuration File
lcd_logo.url
<y0000000000xx>.cfg
Description
Configures the access URL of custom logo file.
Note: It is not applicable to SIP-T20P IP phones.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to download
Example
the custom logo file (logo.dob) from the
provisioning server 192.168.10.25.
lcd_logo.url = http://192.168.10.25/logo.dob
Parameter-
Configuration File
phone_setting.lcd_logo.text
<y0000000000xx>.cfg
Configures a text logo.
Description
Note: It is only applicable to SIP-T20P IP
phones.
290
Format
String
Default Value
Yealink
Range
String within 15 characters
Example
phone_setting.lcd_logo.text = Yealink
Parameter-
Configuration File
features.key_as_send
<y0000000000xx>.cfg
Description
Configures the "#" or "*" key as the send key.
Appendix
If it is set to 0 (Disabled), neither “#” nor “*”
can be used as a send key.
If it is set to 1 (# key), the pound key is used as
the send key.
If it is set to 2 (* key), the asterisk key is used as
the send key.
Format
Integer
Default Value
1
Valid values are:
Range
0-Disabled
1-# key
2-* key
Example
features.key_as_send = 1
Parameter-
Configuration File
features.key_tone
<y0000000000xx>.cfg
Enables or disables the IP phone to play a
Description
tone when a user presses a key.
If it is set to 1 (Enabled), the IP phone will play
a tone when a user presses a key.
Format
Boolean
Default Value
1
Range
0-Disabled
1-Enabled
Example
features.key_tone = 1
Parameter-
Configuration File
features.send_key_tone
<y0000000000xx>.cfg
Enables or disables the IP phone to play a
tone when a user presses a send key.
Description
If it is set to 1 (Enabled), the IP phone will play
a tone when a user presses a send key.
Note: It works only if the parameter
“features.key_tone” is set to 1 (Enabled).
Format
Boolean
Default Value
1
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Valid values are:
Range
0-Disabled
1-Enabled
Example
features.send_key_tone = 1
Parameter-
Configuration File
features.hotline_number
<y0000000000xx>.cfg
Configures the hotline number.
It configures a number that the IP phone
Description
automatically dials out when lifting the
handset, pressing the speakerphone key or
the line key. Leaving it blank disables hotline
feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
features.hotline_number = 3601
Parameter-
Configuration File
features.hotline_delay
<y0000000000xx>.cfg
Configures the waiting time (in seconds) the IP
phone automatically dials out the hotline
number.
If it is set to 0 (0s), the IP phone will
immediately dial out the preconfigured hotline
Description
number when you lift the handset, press the
speakerphone key or press the line key.
If it is set to a value greater than 0, the IP
phone will wait the specified seconds before
dialing out the predefined hotline number
when you lift the handset, press the
speakerphone key or press the line key.
292
Format
Integer
Default Value
4
Range
0 to 10
Appendix
Example
features.hotline_delay = 4
Parameter-
Configuration File
features.save_call_history
<y0000000000xx>.cfg
Enables or disables the IP phone to save call
log.
Description
If it is set to 0 (Disabled), the IP phone cannot
log the placed calls, received calls, missed
calls and the forwarded calls in the call log
lists.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.save_call_history = 1
Parameter-
Configuration File
account.X.missed_calllog
<MAC>.cfg
Enables or disables missed call log feature for
account X.
If it is set to 0 (Disabled), there is no indicator
displaying on the LCD screen, the IP phone
does not log the missed call in the Missed
Description
Calls list.
If it is set to 1 (Enabled), a prompt message
"<number> New Missed Call(s)" along with
an indicator icon is displayed on the IP phone
idle screen when the IP phone misses calls.
X ranges from 1 to 6.
Format
Boolean
Default Value
1
Range
Valid values are:
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0-Disabled
1-Enabled
Example
account.1.missed_calllog = 1
Parameter-
Configuration File
phone_setting.predial_autodial
<y0000000000xx>.cfg
Enables or disables live dialpad feature.
Description
If it is set to 1 (Enabled), the IP phone will
automatically dial out the entered phone
number without having to press any key.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
phone_setting.predial_autodial = 1
Parameter-
Configuration File
phone_setting.inter_digit_time
<y0000000000xx>.cfg
Configures the time (in seconds) for the phone
to automatically dial out the entered digits
Description
without pressing any other key.
Note: It works only if the parameter
“phone_setting.predial_autodial” is set to 1
(Enabled).
294
Format
Integer
Default Value
4
Range
1 to 14
Example
phone_setting.inter_digit_time = 4
Appendix
Parameter-
Configuration File
call_waiting.enable
<y0000000000xx>.cfg
Enables or disables call waiting feature.
If it is set to 0 (Disabled), a new incoming call
is automatically rejected by the IP phone with
Description
a busy message while during a call.
If it is set to 1 (Enabled), the LCD screen will
present a new incoming call while during a
call.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
call_waiting.enable = 1
Parameter-
Configuration File
call_waiting.tone
<y0000000000xx>.cfg
Enables or disables the playing of a call
waiting tone when the IP phone receives an
incoming call during a call.
Description
If it is set to 1 (Enabled), the IP phone will
perform an audible indicator when receiving a
new incoming call during a call.
Note: It works only if the parameter
“call_waiting.enable” is set to 1 (Enabled).
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
call_waiting.tone = 1
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Parameter-
Configuration File
call_waiting.on_code
<y0000000000xx>.cfg
Description
Configures the call waiting on code to activate
the server-side call waiting feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
call_waiting.on_code = *72
Parameter-
Configuration File
call_waiting.off_code
<y0000000000xx>.cfg
Description
Configures the call waiting off code to
deactivate the server-side call waiting feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
call_waiting.off_code = *73
Parameter-
Configuration File
auto_redial.enable
<y0000000000xx>.cfg
Enables or disables the IP phone to
automatically redial the called number when it
Description
is busy.
If it is set to 1 (Enabled), the IP phone will dial
the previous dialed out number automatically
when the dialed number is busy.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
296
auto_redial.enable = 1
Appendix
Parameter-
Configuration File
auto_redial.interval
<y0000000000xx>.cfg
Configures the interval (in seconds) for the IP
phone to wait between redials.
Description
The IP phone redials the dialed number at
regular intervals till the callee answers the
call.
Format
Integer
Default Value
10
Range
1 to 300
Example
auto_redial.interval = 10
Parameter-
Configuration File
auto_redial.times
<y0000000000xx>.cfg
Configures the redial times for the IP phone.
Description
The IP phone tries to redial the dialed number
as many times as configured till the callee
answers the call.
Format
Integer
Default Value
10
Range
1 to 300
Example
auto_redial.times = 10
Parameter-
Configuration File
account.X.auto_answer
<MAC>.cfg
Enables or disables auto answer feature for
account X.
If it is set to 1 (Enabled), the IP phone can
Description
automatically answer an incoming call.
X ranges from 1 to 6.
Note: The IP phone cannot automatically
answer the incoming call during a call even if
auto answer is enabled.
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Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.auto_answer = 1
Parameter-
Configuration File
features.auto_answer_delay
<y0000000000xx>.cfg
Configures the delay time (in seconds)
Description
before the phone automatically answers an
incoming call.
Format
Integer
Default Value
1
Range
1 to 4
Example
features.auto_answer_delay = 1
Parameter-
Configuration File
features.call_completion_enable
<y0000000000xx>.cfg
Enables or disables call completion feature.
If a user places a call and the callee is
temporarily not available to answer the call,
call completion feature allows notifying the
Description
user when the callee becomes available to
receive a call.
If it is set to 1 (Enabled), the caller is notified
when the callee becomes available to
receive a call.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
298
Appendix
Example
features.call_completion_enable = 1
Parameter-
Configuration File
account.X.anonymous_call
<MAC>.cfg
Enables or disables anonymous call feature for
account X.
If it is set to 1 (Enabled), the IP phone will block
Description
its identity from showing up to the callee when
placing a call. The callee’s phone LCD screen
presents anonymous instead of the caller’s
identity.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.anonymous_call = 1
Parameter-
Configuration File
account.X.send_anonymous_co
<MAC>.cfg
de
Configures the phone to send anonymous
on/off code to activate/deactivate the
server-side anonymous call feature for
account X.
If it is set to 0 (Off Code), the IP phone will send
Description
anonymous off code to deactivate the
server-side anonymous call feature.
If it is set to 1 (On Code), the IP phone will send
anonymous on code to activate the
server-side anonymous call feature.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
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Valid values are:
Range
0-Off Code
1-On Code
Example
account.1.send_anonymous_code = 0
Parameter-
Configuration File
account.X.anonymous_call_onc
<MAC>.cfg
ode
Configures the anonymous call on code to
activate the server-side anonymous call
feature for account X.
Description
X ranges from 1 to 6.
Note: It works only if the parameter
“account.X.send_anonymous_code” is set to 1
(Enabled).
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.anonymous_call_oncode = *72
Parameter-
Configuration File
account.X.anonymous_call_off
<MAC>.cfg
code
Configures the anonymous call off code to
deactivate the server-side anonymous call
feature for account X.
Description
X ranges from 1 to 6.
Note: It works only if the parameter
“account.X.send_anonymous_code” is set to 1
(Enabled).
300
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.anonymous_call_offcode = *73
Appendix
Parameter-
Configuration File
account.X.reject_anonymous_c
<MAC>.cfg
all
Enables or disables anonymous call rejection
feature for account X.
If it is set to 1 (Enabled), the IP phone will
Description
automatically reject incoming calls from users
enabled anonymous call feature. The
anonymous user’s phone LCD screen presents
“Anonymity Disallowed”.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.reject_anonymous_call = 1
Parameter-
Configuration File
account.X.anonymous_reject_o
<MAC>.cfg
ncode
Configures the anonymous call rejection on
Description
code to activate the server-side anonymous
call rejection feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.anonymous_reject_oncode = *74
Parameter-
Configuration File
account.X.anonymous_reject_of
<MAC>.cfg
fcode
Description
Configures the anonymous call rejection off
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code to deactivate the server-side anonymous
call rejection feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.anonymous_reject_offcode = *75
Return Message When DND
Parameter-
Configuration File
features.dnd_refuse_code
<y0000000000xx>.cfg
Configures a return code and reason of SIP
response messages when rejecting an
incoming call by DND. A specific reason is
Description
displayed on the caller’s phone LCD screen.
If it is set to 486 (Busy here), the caller’s phone
LCD screen will display the reason “Busy here”
when the callee enables DND feature.
Format
Integer
Default Value
480
Valid values are:
Range
404-No Found
480-Temporarily not available
486-Busy here
Example
features.dnd_refuse_code = 480
DND Mode
Parameter-
Configuration File
features.dnd_mode
<y0000000000xx>.cfg
Configures the DND mode for the IP phone.
If it is set to 0 (Phone), DND feature is effective
Description
for the IP phone.
If it is set to 1 (Custom), you can configure DND
feature for each account.
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Appendix
Format
Integer
Default Value
0
Valid values are:
Range
0-Phone
1-Custom
Example
features.dnd_mode = 0
DND in Phone Mode
Parameter-
Configuration File
features.dnd.enable
<y0000000000xx>.cfg
Enables or disables DND feature.
Description
If it is set to 1 (Enabled), the IP phone will reject
incoming calls on all accounts.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.dnd.enable = 1
Parameter-
Configuration File
features.dnd.on_code
<y0000000000xx>.cfg
Description
Configures the DND on code to activate the
server-side DND feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
features.dnd.on_code = *71
Parameter-
Configuration File
features.dnd.off_code
<y0000000000xx>.cfg
Description
Format
Configures the DND off code to deactivate the
server-side DND feature.
String
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Default Value
Blank
Range
String within 32 characters
Example
features.dnd.off_code = *72
DND in Custom Mode
Parameter-
Configuration File
account.X.dnd.enable
<MAC>.cfg
Enables or disables DND feature for account X.
Description
If it is set to 1 (Enabled), the IP phone will reject
incoming calls on account X.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.dnd.enable = 1
Parameter-
Configuration File
account.X.dnd.on_code
<MAC>.cfg
Configures the DND on code to activate the
Description
server-side DND feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.dnd.on_code = *73
Parameter-
Configuration File
account.X.dnd.off_code
<MAC>.cfg
Configures the DND off code to deactivate the
Description
server-side DND feature for account X.
X ranges from 1 to 6.
Format
304
String
Appendix
Default Value
Blank
Range
String within 32 characters
Example
account.1.dnd.off_code = *74
Parameter-
Configuration File
features.busy_tone_delay
<y0000000000xx>.cfg
Configures a period of time (in seconds) for
which the busy tone is audible on the IP phone.
When one party releases the call, a busy tone
Description
is audible to the other party indicating that the
call connection breaks.
If it is set to 3 (3s), a busy tone is audible for 3
seconds on the IP phone.
Format
Integer
Default Value
0
Valid values are:
Range
0-0s
3-3s
5-5s
Example
features.busy_tone_delay = 0
Parameter-
Configuration File
features.normal_refuse_code
<y0000000000xx>.cfg
Configures a return code and reason of SIP
response messages when rejecting an
incoming call. A specific reason is displayed
Description
on the caller’s phone LCD screen.
If it is set to 486 (Busy here), the caller’s
phone LCD screen will display the message
“Busy here” when the callee rejects the
incoming call.
Format
Integer
Default Value
486
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Valid values are:
Range
404-No Found
480-Temporarily not available
486-Busy here
Example
features.normal_refuse_code = 486
Parameter-
Configuration File
phone_setting.is_deal180
<y0000000000xx>.cfg
Enables or disables the IP phone to deal with
the 180 SIP message received after the 183
Description
SIP message.
If it is set to 1 (Enabled), the IP phone will
resume and play the local ringback tone
upon a subsequent 180 message received.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
phone_setting.is_deal180 = 1
Parameter-
Configuration File
sip.use_out_bound_in_dialog
<y0000000000xx>.cfg
Enables or disables the IP phone to send the
SIP requests to the outbound proxy server.
If it is set to 1 (Enabled), all the SIP request
Description
messages from the IP phone will be forced to
send to the outbound proxy server.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
306
Boolean
Appendix
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
sip.use_out_bound_in_dialog = 1
Parameter-
Configuration File
account.X.advanced.timer_t1
<MAC>.cfg
Configures the SIP session timer T1 (in
seconds) for account X.
Description
T1 is an estimate of the Round Trip Time (RTT)
of transactions between a SIP client and SIP
server.
X ranges from 1 to 6.
Format
Float
Default Value
0.5
Range
0.5 to 10
Example
account.1.advanced.timer_t1 = 0.5
Parameter-
Configuration File
account.X.advanced.timer_t2
<MAC>.cfg
Configures the session timer T2 (in seconds)
for account X.
Description
T2 represents the maximum retransmit
interval for non-INVITE requests and INVITE
responses.
X ranges from 1 to 6.
Format
Float
Default Value
4
Range
2 to 40
Example
account.1.advanced.timer_t2 = 4
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Parameter-
Configuration File
account.X.advanced.timer_t4
<MAC>.cfg
Configures the session timer of T4 (in
seconds) for account X.
Description
T4 represents the maximum duration a
message will remain in the network.
X ranges from 1 to 6.
Format
Float
Default Value
5
Range
2.5 to 60
Example
account.1.advanced.timer_t4 = 5
Parameter-
Configuration File
account.X.session_timer.enable
<MAC>.cfg
Enables or disables the session timer for
account X.
Description
If it is set to 1 (Enabled), IP phone will send
periodic re-INVITE requests to refresh the
session during a call.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.session_timer.enable = 1
Parameter-
Configuration File
account.X.session_timer.expires
<MAC>.cfg
Configures the IP phone to refresh the session
Description
during a call at regular intervals (in seconds)
for account X.
If it is set to 1800 (1800s), the IP phone will
308
Appendix
refresh the session during a call before 1800
seconds.
X ranges from 1 to 6.
Format
Integer
Default Value
1800
Range
30 to 7200
Example
account.1.session_timer.expires = 1800
Parameter-
Configuration File
account.X.session_timer.refresher
<MAC>.cfg
Configures the session timer refresher for
account X.
If it is set to 0 (UAC), refreshing the session is
Description
performed by the IP phone.
If it is set to 1 (UAS), refreshing the session is
performed by a SIP server.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Valid values are:
Range
0-UAC
1-UAS
Example
account.1.session_timer.refresher = 0
Parameter-
Configuration File
features.play_hold_tone.enable
<y0000000000xx>.cfg
Enables or disables the IP phone to play a
Description
tone when there is a hold call on the IP
phone.
Format
Boolean
Default Value
1
Range
Valid values are:
0-Disabled
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1-Enabled
Example
features.play_hold_tone.enable = 1
Parameter-
Configuration File
features.play_hold_tone.delay
<y0000000000xx>.cfg
Configures the interval (in seconds) at which
the IP phone plays a hold tone.
If it is set to 30 (30s), the IP phone will play a
Description
hold tone every 30 seconds when there is a
hold call on the IP phone.
Note: It works only if the parameter
“features.play_hold_tone.enable” is set to 1
(Enabled).
Format
Integer
Default Value
30
Range
3 to 3600
Example
features.play_hold_tone.delay = 30
Parameter-
Configuration File
sip.rfc2543_hold
<y0000000000xx>.cfg
Configures whether RFC 2543 (c=0.0.0.0)
outgoing hold signaling is used.
If it is set to 0 (Disabled), SDP media direction
Description
attributes (such as a=sendonly) per RFC 3264
is used when placing a call on hold.
If it is set to 1 (Enabled), SDP media
connection address c=0.0.0.0 per RFC 2543 is
used when placing a call on hold.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
310
sip.rfc2543_hold = 0
Appendix
Call Forward Mode
Parameter-
Configuration File
features.fwd_mode
<y0000000000xx>.cfg
Configures the call forward mode for the IP
phone.
Description
If it is set to 0 (Phone), call forward feature is
effective for the IP phone.
If it is set to 1 (Custom), you can configure call
forward feature for each account.
Format
Integer
Default Value
0
Valid values are:
Range
0-Phone
1-Custom
Example
features.fwd_mode = 0
Call Forward in Phone Mode
Always Forward
Parameter-
Configuration File
forward.always.enable
< y0000000000xx >.cfg
Enables or disables always forward feature.
Description
If it is set to 1 (Enabled), incoming calls are
forwarded to the destination number
immediately.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
forward.always.enable = 1
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Parameter-
Configuration File
forward.always.target
< y0000000000xx >.cfg
Description
Configures the destination number of the
always forward.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.always.target = 3601
Parameter-
Configuration File
forward.always.on_code
< y0000000000xx >.cfg
Configures the always forward on code to
Description
activate the server-side always forward
feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.always.on_code = *72
Parameter-
Configuration File
forward.always.off_code
< y0000000000xx >.cfg
Configures the always forward off code to
Description
deactivate the server-side always forward
feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.always.off_code = *73
Busy Forward
Parameter-
Configuration File
forward.busy.enable
< y0000000000xx >.cfg
Description
312
Enables or disables busy forward feature.
If it is set to 1 (Enabled), incoming calls are
Appendix
forwarded to the destination number when
the callee is busy.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
forward.busy.enable = 1
Parameter-
Configuration File
forward.busy.target
< y0000000000xx >.cfg
Description
Configures the destination number of the
busy forward.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.busy.target = 3602
Parameter-
Configuration File
forward.busy.on_code
< y0000000000xx >.cfg
Configures the busy forward on code to
Description
activate the server-side busy forward
feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.busy.on_code = *74
Parameter-
Configuration File
forward.busy.off_code
< y0000000000xx >.cfg
Configures the busy forward off code to
Description
deactivate the server-side busy forward
feature.
Format
String
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Default Value
Blank
Range
String within 32 characters
Example
forward.busy.off_code = *75
No Answer Forward
Parameter-
Configuration File
forward.no_answer.enable
< y0000000000xx >.cfg
Enables or disables no answer forward
feature.
Description
If it is set to 1 (Enabled), incoming calls are
forward to the destination number after a
period of ring time.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
forward.no_answer.enable = 1
Parameter-
Configuration File
forward.no_answer.target
< y0000000000xx >.cfg
Description
Configures the destination number of the no
answer forward.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.no_answer.target = 3603
Parameter-
Configuration File
forward.no_answer.timeout
< y0000000000xx >.cfg
Configures ring times (N) to wait before
Description
forwarding incoming calls.
Incoming calls will be forwarded when not
answered after N*6 seconds.
Format
314
Integer
Appendix
Default Value
2
Range
0 to 20
Example
forward.no_answer.timeout = 2
Parameter-
Configuration File
forward.no_answer.on_code
< y0000000000xx >.cfg
Configures the no answer forward on code to
Description
activate the server-side no answer forward
feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.no_answer.on_code = *76
Parameter-
Configuration File
forward.no_answer.off_code
< y0000000000xx >.cfg
Configures the no answer forward off code
Description
to deactivate the server-side no answer
forward feature.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
forward.no_answer.off_code = *77
Call Forward in Custom Mode
Always Forward
Parameter-
Configuration File
account.X.always_fwd.enable
<MAC>.cfg
Enables or disables always forward feature
for account X.
Description
If it is set to 1 (Enabled), incoming calls to the
account X are forwarded to the destination
number immediately.
X ranges from 1 to 6.
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Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.always_fwd.enable = 1
Parameter-
Configuration File
account.X.always_fwd.target
<MAC>.cfg
Configures the destination number of the
Description
always forward for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.always_fwd.target = 3601
Parameter-
Configuration File
account.X.always_fwd.on_code
<MAC>.cfg
Configures the always forward on code to
Description
activate the server-side always forward
feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.always_fwd.on_code = *72
Parameter-
Configuration File
account.X.always_fwd.off_code
<MAC>.cfg
Configures the always forward off code to
Description
deactivate the server-side always forward
feature for account X.
X ranges from 1 to 6.
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Appendix
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.busy_fwd.off_code = *73
Busy Forward
Parameter-
Configuration File
account.X.busy_fwd.enable
<MAC>.cfg
Enables or disables busy forward feature for
account X.
Description
If it is set to 1 (Enabled), incoming calls to the
account X are forwarded to the destination
number when the callee is busy.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.busy_fwd.enable = 1
Parameter-
Configuration File
account.X.busy_fwd.target
<MAC>.cfg
Configures the destination number of the
Description
busy forward for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.busy_fwd.target = 3602
Parameter-
Configuration File
account.X.busy_fwd.on_code
<MAC>.cfg
Description
Configures the busy forward on code to
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activate the server-side busy forward feature
for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.busy_fwd.on_code = *74
Parameter-
Configuration File
account.X.busy_fwd.off_code
<MAC>.cfg
Configures the busy forward off code to
Description
deactivate the server-side busy forward
feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.busy_fwd.off_code = *75
No Answer Forward
Parameter-
Configuration File
account.X.timeout_fwd.enable
<MAC>.cfg
Enables or disables no answer forward
feature for account X.
Description
If it is set to 1 (Enabled), incoming calls to the
account X are forward to the destination
number after a period of ring time.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
318
account.1.timeout_fwd.enable = 1
Appendix
Parameter-
Configuration File
account.X.timeout_fwd.target
<MAC>.cfg
Configures the destination number of the no
Description
answer forward for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.timeout_fwd.target = 3603
Parameter-
Configuration File
account.X.timeout_fwd.timeout
<MAC>.cfg
Configures ring times (N) to wait before
forwarding incoming calls for account X.
Description
Incoming calls will be forwarded when not
answered after N*6 seconds
X ranges from 1 to 6.
Format
Integer
Default Value
2
Range
0 to 20
Example
account.1.timeout_fwd.timeout = 2
Parameter-
Configuration File
account.X.timeout_fwd.on_code
<MAC>.cfg
Configures the no answer forward on code
Description
to activate the server-side no answer
forward feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.timeout_fwd.on_code = *76
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Parameter-
Configuration File
account.X.timeout_fwd.off_code
<MAC>.cfg
Configures the no answer forward off code
Description
to activate the server-side no answer
forward feature for account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.timeout_fwd.off_code = *77
Fwd International
Parameter-
Configuration File
forward.international.enable
<y0000000000xx>.cfg
Enables or disables the IP phone to forward
Description
an incoming call to an international phone
number.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
forward.international.enable = 1
Parameter-
Configuration File
transfer.blind_tran_on_hook_ena
<y0000000000xx>.cfg
ble
Description
the blind transfer through on-hook.
Format
Boolean
Default Value
1
Range
320
Enables or disables the IP phone to complete
Valid values are:
0-Disabled
Appendix
1-Enabled
Example
transfer.blind_tran_on_hook_enable = 1
Parameter-
Configuration File
transfer.on_hook_trans_enable
<y0000000000xx>.cfg
Enables or disables the IP phone to complete
Description
the semi-attended transfer or the attended
transfer through on-hook.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
transfer.on_hook_trans_enable = 1
Parameter-
Configuration File
transfer.semi_attend_tran_enable
<y0000000000xx>.cfg
Configures whether to display the missed
Description
call prompt on the destination party’s phone
when performing a semi-attended transfer.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Enabled
1-Disabled
Example
transfer.semi_attend_tran_enable = 1
Parameter-
Configuration File
account.X.conf_type
<MAC>.cfg
Configures the conference type for account
Description
X.
If it is set to 0 (Local Conference),
conferences are set up on the IP phone
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locally.
If it is set to 2 (Network Conference),
conferences are set up by the server.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Valid values are:
Range
0-Local Conference
2-Network Conference
Example
account.1.conf_type = 0
Parameter-
Configuration File
account.X.conf_uri
<MAC>.cfg
Configures the conference URI for account X.
X ranges from 1 to 6.
Description
Note: It works only if the parameter
“account.X.conf_type” is set to 2 (Network
Conference).
Format
SIP URI
Default Value
Blank
Range
SIP URI within 511 characters
Example
account.1.conf_uri =
conference@example.com
Parameter-
Configuration File
transfer.tran_others_after_conf_e
<y0000000000xx>.cfg
nable
Enables or disables Transfer on Conference
Hang Up feature.
If enabled, the other two parties remain
Description
connected when the conference initiator
drops the conference call.
Note: It is only applicable to the local
conference.
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Appendix
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
transfer.tran_others_after_conf_enable = 1
Phone Basis
Parameter-
Configuration File
features.pickup.direct_pickup_e
<MAC>.cfg
nable
Enables or disables the IP phone to display
the DPickup soft key when the IP phone is
Description
off-hook.
Note: It is not applicable to SIP-T20P IP
phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.pickup.direct_pickup_enable = 1
Parameter-
Configuration File
features.pickup.direct_pickup_co
<MAC>.cfg
de
Configures the directed call pickup code on a
phone basis.
Description
Note: The directed call pickup code
configured on a per-line basis takes
precedence over that configured on a phone
basis.
Format
String
Default Value
Blank
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Range
String within 32 characters
Example
features.pickup.direct_pickup_code = *97
Per-line Basis
Parameter-
Configuration File
account.X.direct_pickup_code
<MAC>.cfg
Configures the directed call pickup code on
a per-line basis.
X ranges from 1 to 6.
Description
Note: The directed call pickup code
configured on a per-line basis takes
precedence over that configured on a phone
basis.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.direct_pickup_code = *68
Phone Basis
Parameter-
Configuration File
features.pickup.group_pickup_en
<MAC>.cfg
able
Enables or disables the IP phone to display
the GPickup soft key when the IP phone is
Description
off-hook.
Note: It is not applicable to SIP-T20P IP
phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
324
features.pickup.group_pickup_enable = 1
Appendix
Parameter-
Configuration File
features.pickup.group_pickup_co
<MAC>.cfg
de
Configures the group call pickup code on a
phone basis.
Description
Note: The group call pickup code configured
on a per-line basis takes precedence over
that configured on a phone basis.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
features.pickup.group_pickup_code = *98
Per-line Basis
Parameter-
Configuration File
account.X.group_pickup_code
<MAC>.cfg
Configures the group call pickup code on a
per-line basis.
Description
X ranges from 1 to 6.
Note: The group call pickup code configured
on a per-line basis takes precedence over
that configured on a phone basis.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
account.1.group_pickup_code = *69
Parameter-
Configuration File
account.X.dialoginfo_callpickup
<MAC>.cfg
Configures Dialog Info Call Pickup feature for
account X.
Description
If it is set to 1 (Enabled), call pickup is
implemented through SIP signals.
X ranges from 1 to 6.
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Note: It is not applicable to SIP-T19P IP
phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.dialoginfo_callpickup = 1
Parameter-
Configuration File
wui.http_enable
<y0000000000xx>.cfg
Enables or disables the IP phone to access its
web user interface using HTTP protocol.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
wui.http_enable = 1
Parameter-
Configuration File
network.port.http
<y0000000000xx>.cfg
Configures the HTTP port used to access the
web user interface of the IP phone.
Description
The default HTTP port is 80.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
326
Format
Integer
Default Value
80
Appendix
Range
1 to 65535
Example
network.port.http = 80
Parameter-
Configuration File
wui.https_enable
<y0000000000xx>.cfg
Enables or disables the IP phone to access its
web user interface using HTTPS protocol.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
wui.https_enable = 1
Parameter-
Configuration File
network.port.https
<y0000000000xx>.cfg
Configures the HTTPS port used to access the
web user interface of the IP phone.
Description
The default HTTPS port is 443.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
443
Range
1 to 65535
Example
network.port.https = 443
Parameter-
Configuration File
account.X.cid_source
<MAC>.cfg
Description
Configures the presentation of the caller
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identity for account X.
0-FROM (Derives the name and number of
the caller from the “From” header).
1-PAI (Derives the name and number of the
caller from the “PAI” header. If the server
does not send the “PAI” header, displays
“anonymity” on the callee’s phone).
2-PAI-FROM (Derives the name and number
of the caller from the “PAI” header
preferentially. If the server does not send the
“PAI” header, derives from the “From”
header).
3-RPID-PAI-FROM
4-PAI-RPID-FROM
5-RPID-FROM
X ranges from 1 to 6.
Format
Integer
Default Value
0
Range
0 to 5
Example
account.1.cid_source = 0
Parameter-
Configuration File
account.X.cp_source
<MAC>.cfg
Configures the presentation of the callee’s
identity for account X.
0-PAI-RPID (Derives the name and number of
the callee from the “PAI” header
preferentially. If the server does not send the
“PAI” header, derives from the “RPID”
header).
Description
1-Dialed Digits (Preferentially displays the
dialed digits on the caller’s phone).
2-RFC 4916 (Derives the name and number
of the callee from “From” header in the
Update message).
When the RFC 4916 is enabled on the IP
phone, the caller sends the SIP request
message which contains the from-change
328
Appendix
tag in the Supported header. The caller then
receives an UPDATE message from the
callee, and displays the identity in the From
header.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Range
0 to 2
Example
account.1.cp_source = 0
Parameter-
Configuration File
account.X.dtmf.type
<MAC>.cfg
Configures the DTMF type for account X.
If it is set to 0 (INBAND), DTMF digits are
transmitted in the voice band.
If it is set to 1 (RFC 2833), DTMF digits are
transmitted by RTP Events compliant to RFC
2833.
Description
If it is set to 2 (SIP INFO), DTMF digits are
transmitted by the SIP INFO messages.
If it is set to 3 (AUTO or SIP INFO), the IP
phone negotiates with the other end to use
INBAND or RFC 2833, if there is no
negotiation, using SIP INFO by default.
X ranges from 1 to 6.
Format
Integer
Default Value
1
Valid values are:
0-INBAND
Range
1-RFC 2833
2-SIP INFO
3-AUTO or SIP INFO
Example
account.1.dtmf.type = 1
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Parameter-
Configuration File
account.X.dtmf.dtmf_payload
<MAC>.cfg
Description
Configures the RFC 2833 payload type.
X ranges from 1 to 6.
Format
Integer
Default Value
101
Range
96 to 127
Example
account.1.dtmf.dtmf_payload = 101
Parameter-
Configuration File
account.X.dtmf.info_type
<MAC>.cfg
Configures the DTMF info type when the
Description
DTMF type is configured as “SIP INFO”,
“AUTO or SIP INFO”.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Valid values are:
0-Disabled
Range
1-DTMF-Relay
2-DTMF
3-Telephone-Event
Example
account.1.dtmf.info_type = 0
Parameter-
Configuration File
features.dtmf.repetition
<y0000000000xx>.cfg
Description
330
Configures the number of times for the IP
phone to send the end RTP EVENT packet.
Format
Integer
Default Value
3
Range
1 to 3
Example
features.dtmf.repetition = 3
Appendix
Parameter-
Configuration File
features.dtmf.hide
<y0000000000xx>.cfg
Enables or disables the IP phone to suppress
Description
the display of DTMF digits.
If it is set to 1 (Enabled), the DTMF digits are
displayed as asterisks.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.dtmf.hide = 1
Parameter-
Configuration File
features.dtmf.hide_delay
<y0000000000xx>.cfg
Enables or disables the IP phone to display
the DTMF digits for a short period before
Description
displaying asterisks.
Note: It works only if the parameter
“features.dtmf.hide” is set to 1 (Enabled). It is
not applicable to SIP-T20P IP phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.dtmf.hide_delay = 1
Parameter-
Configuration File
features.dtmf.replace_tran
<y0000000000xx>.cfg
Description
Enables or disables transfer via DTMF
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feature.
If it is set to 0 (Disabled), the IP phone will
perform the transfer as normal when pressing
the transfer key during a call.
If it is set to 1 (Enabled), the IP phone will
transmit the specified DTMF digits to the
server for completing call transfer when
pressing the transfer key during a call.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.dtmf.replace_tran = 1
Parameter-
Configuration File
features.dtmf.transfer
<y0000000000xx>.cfg
Configures the DTMF digits to be transmitted
to complete the transfer.
Description
Note: It works only if the parameter
“features.dtmf.replace_tran” is set to 1
(Enabled).
Format
String
Default Value
Blank
Range
Valid values are: 0-9, *, # and A-D.
String within 32 characters
Example
features.dtmf.transfer = 123
Parameter-
Configuration File
features.intercom.allow
<y0000000000xx>.cfg
Enables or disables the IP phone to
automatically answer an incoming intercom
Description
call.
If it is set to 0 (Disabled), the IP phone will
reject incoming intercom calls and sends a
332
Appendix
busy signal to the caller.
If it is set to 1 (Enabled), the IP phone will
automatically answer an incoming intercom
call.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.intercom.allow = 1
Parameter-
Configuration File
features.intercom.mute
<y0000000000xx>.cfg
Enables or disables the IP phone to mute the
microphone when answering an intercom
call.
Description
If it is set to 0 (Disabled), the microphone is
un-muted for incoming calls.
If it is set to 1 (Enabled), the microphone is
muted for intercom calls.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.intercom.mute = 1
Parameter-
Configuration File
features.intercom.tone
<y0000000000xx>.cfg
Enables or disables the IP phone to play a
warning tone when receiving an intercom
call.
Description
If it is set to 0 (Disabled), the IP phone will
automatically answer the intercom call
without a warning tone.
If it is set to 1 (Enabled), the IP phone will
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
play a warning tone to alert you before
answering the intercom call.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.intercom.tone = 1
Parameter-
Configuration File
features.intercom.barge
<y0000000000xx>.cfg
Enables or disables the IP phone to
automatically answer an incoming intercom
call while there is already an active call on
the IP phone.
If it is set to 0 (Disabled), the IP phone will
Description
handle an incoming intercom call like a
waiting call while there is already an active
call on the IP phone.
If it is set to 1 (Enabled), the IP phone will
automatically answer the intercom call while
there is already an active call on the IP phone
and place the active call on hold.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.intercom.barge = 1
Parameter-
Configuration File
features.alert_info_tone
<y0000000000xx>.cfg
Enables and disables the IP phone to map
Description
the keywords in the Alert-info header to the
specified Bellcore ring tones.
334
Appendix
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.alert_info_tone = 1
Parameter-
Configuration File
account.X.alert_info_url_enable
<MAC>.cfg
Enables or disables distinctive ring tones
feature for account X.
If it is set to 1 (Enabled), the IP phone will try
Description
to download the WAV ring tone file from the
URL and then play the remote ring tone
when the Alert-Info header contains a
remote URL.
X ranges from 1 to 6.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.alert_info_url_enable = 1
Parameter-
Configuration File
distinctive_ring_tones.alert_info.X
<y0000000000xx>.cfg
.text
Configures the texts to map the keywords
Description
contained in the SIP header.
X ranges from 1 to 10.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
distinctive_ring_tones.alert_info.1.text =
family
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Parameter-
Configuration File
distinctive_ring_tones.alert_info.X
<y0000000000xx>.cfg
.ringer
Configures the desired ring tones for each
text.
Description
The value ranges from 1 to 5, the digit stands
for the appropriate ring tone.
X ranges from 1 to 10.
Format
Integer
Default Value
1
Valid values are:
1-Ring1.wav
Range
2-Ring2.wav
3-Ring3.wav
4-Ring4.wav
5-Ring5.wav
Example
distinctive_ring_tones.alert_info.1.ringer =
1
Parameter-
Configuration File
voice.tone.country
<y0000000000xx>.cfg
Description
Configures the country tone for the IP phone.
Format
String
Default Value
Custom
Valid values are:
Range
336

Custom

Australia

Austria

Brazil

Belgium

China

Czech

Denmark

Finland

France
Appendix

Germany

Great Britain

Greece

Hungary

Lithuania

India

Italy

Japan

Mexico

New Zealand

Netherlands

Norway

Portugal

Spain

Switzerland

Sweden

Russia

United States

Chile

Czech ETSI
Example
voice.tone.country = Custom
Parameter-
Configuration File
voice.tone.dial
<y0000000000xx>.cfg
voice.tone.ring
voice.tone.busy
voice.tone.congestion
voice.tone.callwaiting
voice.tone.dialrecall
voice.tone.info
voice.tone.stutter
voice.tone.message (not
applicable to SIP-T20P IP phones)
voice.tone.autoanswer
Configures the tone for each condition.
tonelist = element[,element] [,element]…
Where
Description
element = [!]Freq1[+Freq2][+Freq3][+Freq4]
/Duration
Freq: the frequency of the tone (ranges from
200 to 7000 Hz). If it is set to 0 (0Hz), it means
the tone is not played. A tone is comprised of
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at most four different frequencies.
Duration: the time duration (in milliseconds,
ranges from 0 to 30000ms) of the ring tone.
You can configure at most eight different
tones for one condition, and separate tones
by commas (e.g., 250/200, !0/1000,
200+300/500, 600+700+800+1000/2000). The
exclamation point (!) can be added
optionally, which means these tones are only
played once.
Note: It works only if the parameter
“voice.tone.country” is set to Custom.
Format
Refer to the introduction above
Default Value
Blank
Range
Not Applicable
Example
voice.tone.dial = 800+200/1000, 0/100,
500/1200, 500+600+950+1500/5000
Parameter-
Configuration File
remote_phonebook.data.X.url
<y0000000000xx>.cfg
Configures the access URL of the remote
XML phone book.
Description
X ranges from 1 to 5.
Note: It is not applicable to SIP-T20P IP
phones.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
http://192.168.1.20/phonebook.xml
Parameter-
Configuration File
remote_phonebook.data.X.name
<y0000000000xx>.cfg
Description
338
remote_phonebook.data.1.url =
Configures the display name of the remote
phone book item.
Appendix
Note: It is not applicable to SIP-T20P IP
phones.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
remote_phonebook.data.1.name = yl01
Parameter-
Configuration File
remote_phonebook.display_name
<y0000000000xx>.cfg
Configures the display name of the remote
phone book.
If you leave it blank, Remote Phone Book is
Description
displayed on the LCD screen at the path
Menu->Directory.
Note: It is not applicable to SIP-T20P IP
phones.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
remote_phonebook.display_name =
Remote Phone Book
Parameter-
Configuration File
features.remote_phonebook.enabl
<y0000000000xx>.cfg
e
Enables or disables the IP phone to
perform a remote phone book search
Description
when receiving an incoming call.
Note: It is not applicable to SIP-T20P IP
phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.remote_phonebook.enable = 1
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
Configuration File
features.remote_phonebook.flash_
<y0000000000xx>.cfg
time
Configures how often to refresh the local
cache of the remote phone book.
If it is set to 3600 (3600s), the IP phone will
refresh the local cache of the remote phone
Description
book every 3600 seconds.
Note: It is not applicable to SIP-T20P IP
phones.
Format
Integer
Default Value
21600
Range
3600 to 2592000
features.remote_phonebook.flash_time =
Example
21600
Parameter-
Configuration File
ldap.enable
<y0000000000xx>.cfg
Enables or disables LDAP feature on the IP
Description
phone.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
ldap.enable =1
Parameter-
Configuration File
ldap.name_filter
<y0000000000xx>.cfg
Configures the name attribute for LDAP
Description
searching. The “*” symbol in the filter stands
for any character. The “%” symbol in the filter
340
Appendix
stands for the entering string used as the
prefix of the filter condition.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
String
Default Value
Blank
Range
String within 99 characters
ldap.name_filter = (|(cn=%)(sn=%))
When the name prefix of the cn or sn of the
Example
contact record matches the search criteria,
the record will be displayed on the LCD
screen.
Parameter-
Configuration File
ldap.number_filter
<y0000000000xx>.cfg
Configures the number attribute for LDAP
searching.
The “*” symbol in the filter stands for any
Description
character. The “%” symbol in the filter stands
for the entering string used as the prefix of
the filter condition.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
String
Default Value
Blank
Range
String within 99 characters
ldap.number_filter =
(|(telephoneNumber=%)(Mobile=%)(ipPh
one=%))
Example
When the number prefix of the
telephoneNumber, Mobile or ipPhone of
the contact record matches the search
criteria, the record will be displayed on the
LCD screen.
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Parameter-
Configuration File
ldap.host
<y0000000000xx>.cfg
Configures the IP address or domain name
Description
of the LDAP server.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
IP Address or Domain Name
Default Value
Blank
Range
String within 99 characters
Example
ldap.host = 192.168.1.20
Parameter-
Configuration File
ldap.port
<y0000000000xx>.cfg
Configures the LDAP server port.
Description
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
Integer
Default Value
389
Range
1 to 65535
Example
ldap.port = 389
Parameter-
Configuration File
ldap.base
<y0000000000xx>.cfg
Configures the LDAP search base which
corresponds to the location in the LDAP
phone book from which the LDAP search
Description
request begins. The search base narrows the
search scope and decreases directory
search time.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
342
Format
String
Default Value
Blank
Range
String within 99 characters
Example
ldap.base = dc=yealink,dc=cn
Appendix
Parameter-
Configuration File
ldap.user
<y0000000000xx>.cfg
Configures the user name uses to login the
LDAP server.
This parameter can be left blank in case the
Description
server allows anonymous to login. Otherwise
you will need to provide the user name to
access the LDAP server.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
ldap.user =
cn=manager,dc=yealink,dc=cn
Parameter-
Configuration File
ldap.password
<y0000000000xx>.cfg
Configures the password to login the LDAP
server.
This parameter can be left blank in case the
Description
server allows anonymous to login. Otherwise
you will need to provide the password to
access the LDAP server.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
ldap.password = secret
Parameter-
Configuration File
ldap.max_hits
<y0000000000xx>.cfg
Configures the maximum number of search
Description
results to be returned by the LDAP server. If
the value of the “Max.Hits” is blank, the
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
LDAP server will return all searched results.
Please note that a very large value of the
“Max. Hits” will slow down the LDAP search
speed, therefore it should be configured
according to the available bandwidth.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
Integer
Default Value
50
Range
1 to 32000
Example
ldap.max_hits = 50
Parameter-
Configuration File
ldap.name_attr
<y0000000000xx>.cfg
Configures the name attributes of each
record to be returned by the LDAP server. It
compresses the search results. You can
Description
configure multiple name attributes
separated by spaces.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
ldap.name_attr = cn sn
Parameter-
Configuration File
ldap.numb_attr
<y0000000000xx>.cfg
Configures the number attributes of each
record to be returned by the LDAP server. It
compresses the search results. You can
Description
configure multiple number attributes
separated by spaces.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
344
Format
String
Default Value
Blank
Appendix
Range
String within 99 characters
Example
ldap.numb_attr = telephoneNumber
Parameter-
Configuration File
ldap.display_name
<y0000000000xx>.cfg
Configures the display name of the contact
record displayed on the LCD screen.
Description
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones. The value must start with
“%” symbol.
Format
String
Default Value
Blank
Range
String within 99 characters
ldap.display_name = %cn
Example
The cn of the contact record is displayed on
the LCD screen.
Parameter-
Configuration File
ldap.version
<y0000000000xx>.cfg
Configures the LDAP protocol version
supported by the IP phone. Make sure the
Description
protocol value corresponds with the version
assigned on the LDAP server.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
Integer
Default Value
3
Range
2 or 3
Example
ldap.version = 3
Parameter-
Configuration File
ldap.call_in_lookup
<y0000000000xx>.cfg
Enables or disables the IP phone to perform
Description
an LDAP search when receiving an incoming
call.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
ldap.call_in_lookup = 1
Parameter-
Configuration File
ldap.ldap_sort
<y0000000000xx>.cfg
Enables or disables the IP phone to sort the
search results in alphabetical order or
Description
numerical order.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
ldap.ldap_sort = 1
Visual and Audio Alert for BLF Pickup
Parameter-
Configuration File
features.pickup.blf_visual_enabl
<MAC>.cfg
e
Enables or disables the IP phone to display a
visual prompt when the monitored user
Description
receives an incoming call.
Note: It is not applicable to SIP-T19P and
SIP-T20P IP phones.
Format
346
Boolean
Appendix
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.pickup.blf_visual_enable = 1
Parameter-
Configuration File
features.pickup.blf_audio_enable
<MAC>.cfg
Enables or disables the IP phone to play an
alert tone when the monitored user receives
Description
an incoming call.
Note: It is not applicable to SIP-T19P IP
phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.pickup.blf_audio_enable = 1
BLF LED Mode
Parameter-
Configuration File
features.blf_led_mode
<y0000000000xx>.cfg
It configures BLF LED mode and provides four
kinds of definition for the BLF key LED status.
Description
For more information, refer to Busy Lamp
Field on page 142.
Note: It is not applicable to SIP-T19P IP
phones.
Format
Integer
Default Value
0
Range
0 to 3
Example
features.blf_led_mode = 1
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
Configuration File
account.X.music_server_uri
<MAC>.cfg
Configures the Music on Hold server
address. Examples for valid values:
<10.1.3.165>, 10.1.3.165, sip:moh@sip.com,
Description
<sip:moh@sip.com>, <yealink.com> or
yealink.com.
X ranges from 1 to 6.
Note: The DNS query in this parameter only
supports A query.
Format
String
Default Value
Blank
Range
String within 256 characters
Example
account.1.music_server_uri =<10.1.3.165>
Parameter-
Configuration File
account.X.acd.enable
<MAC>.cfg
Enables or disables ACD feature for account
Description
X.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Value
0-Disabled
1-Enabled
Example
account.1.acd.enable = 1
Parameter-
Configuration File
account.X.acd.available
<MAC>.cfg
Enables or disables the IP phone to display
Description
the available and unavailable soft keys after
the phone logs into the ACD system for
348
Appendix
account X.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Value
0-Disabled
1-Enabled
Example
account.1.acd.available = 1
Parameter-
Configuration File
acd.auto_available
<y0000000000xx>.cfg
Enables or disables ACD auto available
feature.
Description
If it is set to 1 (Enabled), the IP phone will
automatically change the phone status to
available.
Format
Boolean
Default Value
0
Valid values are:
Value
0-Disabled
1-Enabled
Example
acd.auto_available = 1
Parameter-
Configuration File
acd.auto_available_timer
<y0000000000xx>.cfg
Configures the length of time (in seconds)
before the IP phone state is automatically
Description
changed to available.
Note: It works only if the parameter
“acd.auto_available” is set to 1 (Enabled).
Format
Integer
Default Value
60
Value
0 to 120
Example
acd.auto_available_timer = 60
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
Configuration File
account.X.subscribe_mwi
<MAC>.cfg
Enables or disables the IP phone to
subscribe the message waiting indicator to
the account for account X.
Description
If it is set to 1 (Enabled), the IP phone will
send a SUBSCRIBE message to the server
for message-summary updates.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Value
0-Disabled
1-Enabled
Example
account.1.subscribe_mwi = 0
Parameter-
Configuration File
account.X.subscribe_mwi_expires
<MAC>.cfg
Configures MWI subscribe expiry time (in
seconds) for account X.
The IP phone is able to successfully refresh
the SUBCRIBE for message-summary events
Description
before expiration of the SUBSCRIBE dialog.
X ranges from 1 to 6.
Note: It works only if the parameter
“account.X.subscribe_mwi” is set to 1
(Enabled).
350
Format
Integer
Default Value
3600
Value
0 to 84600
Example
account.1.subscribe_mwi_expires = 3600
Appendix
Parameter-
Configuration File
voice_mail.number.X
<MAC>.cfg
Configures the voice mail number for
Description
account X.
X ranges from 1 to 6.
Format
String
Default Value
Blank
Value
String within 99 characters
Example
voice_mail.number.1 = 1234
Parameter-
Configuration File
account.X.subscribe_mwi_to_vm
<MAC>.cfg
Enables or disables the IP phone to
subscribe the message waiting indicator to
the voice mail number for account X.
Description
X ranges from 1 to 6.
Note: It works only if the parameters
“account.X.subscribe_mwi” is set to 1
(Enabled) and “voice_mail.number.X” is
configured.
Format
Boolean
Default Value
0
Valid values are:
Value
0-Disabled
1-Enabled
Example
account.1.subscribe_mwi_to_vm = 0
Parameter-
Configuration File
multicast.codec
<y0000000000xx>.cfg
Configures a multicast codec for the IP
Description
phone to use to send an RTP stream.
Note: It is not applicable to SIP-T19P IP
phones.
Format
string
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Default Value
G722
Valid values are:
Range

PCMU

PCMA

G729

G722

G726-16 (not applicable to SIP-T21P)

G726-24 (not applicable to SIP-T21P)

G726-32

G726-40 (not applicable to SIP-T21P)

G723_53
Example
multicast.codec = G722
Parameter-
Configuration File
multicast.receive_priority.enable
<y0000000000xx>.cfg
Enables or disables the IP phone to handle
the incoming multicast paging calls when
there is an active multicast paging call on
Description
the IP phone.
If it is set to 1 (Enabled), the IP phone will
answer the incoming multicast paging call
with a higher priority and ignore that with a
lower priority.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
multicast.receive_priority.enable =1
Parameter-
Configuration File
multicast.receive_priority.priority
< y0000000000xx >.cfg
Description
352
Configures the priority of multicast paging
calls.
Appendix
1 is the highest priority, 10 is the lowest
priority.
If it is set to 0, all incoming multicast paging
calls will be automatically ignored.
Format
Integer
Default Value
10
Range
0 to10
Example
multicast.receive_priority.priority = 10
Parameter-
Configuration File
multicast.listen_address.X.label
< y0000000000xx >.cfg
Configures the label to be displayed on the
Description
LCD screen when receiving the RTP
multicast.
X ranges from 1 to 10.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
multicast.listen_address.1.label = Paging1
Parameter-
Configuration File
multicast.listen_address.X.ip_addr
< y0000000000xx >.cfg
ess
Configures the multicast address and port
number that the IP phone listens to.
Description
X ranges from 1 to 10.
Note: The valid multicast IP addresses
range from 224.0.0.0 to 239.255.255.255.
Format
String
Default Value
Blank
Range
Not Applicable
Example
multicast.listen_address.1.ip_address =
224.5.6.20:10008
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Parameter-
Configuration File
action_url.setup_completed
<y0000000000xx>.cfg
action_url.registered
action_url.unregistered
action_url.register_failed
action_url.off_hook
action_url.on_hook
action_url.incoming_call
action_url.outgoing_call
action_url.call_established
action_url.dnd_on
action_url.dnd_off
action_url.always_fwd_on
action_url.always_fwd_off
action_url.busy_fwd_on
action_url.busy_fwd_off
action_url.no_answer_fwd_on
action_url.no_answer_fwd_off
action_url.transfer_call
action_url.blind_transfer_call
action_url.attended_transfer_call
action_url.hold
action_url.unhold
action_url.mute
action_url.unmute
action_url.missed_call
action_url.call_terminated
action_url.busy_to_idle
action_url.idle_to_busy
action_url.ip_change
action_url.forward_incoming_call
action_url.reject_incoming_call
action_url.answer_new_incoming_
call
action_url.transfer_finished
354
Appendix
action_url.transfer_failed
Configures the URL for the predefined
event.
The value format is: http(s)://IP address of
server/help.xml? variable name=variable
value.
Valid variable values are:
Description

$mac

$ip

$model

$firmware

$active_url

$active_user

$active_host

$local

$remote

$display_local

$display_remote

$call_id
Format
URL
Default Value
Blank
Range
String within 511 characters
action_url.mute =
Example
http://192.168.0.20/help.xml?model=$mo
del
Parameter-
Configuration File
features.action_uri_limit_ip
<y0000000000xx>.cfg
Configures the address(es) from which
Action URI will be accepted.
For discontinuous IP addresses, multiple IP
Description
addresses are separated by commas.
For continuous IP addresses, the format likes
*.*.*.* and the “*” stands for the values
0~255.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
For example: 10.10.*.* stands for the IP
addresses that range from 10.10.0.0 to
10.10.255.255.
If left blank, the IP phone cannot receive or
handle any HTTP GET request.
If it is set to “any”, the IP phone will accept
and handle HTTP GET requests from any IP
address.
Format
IP Address or any
Default Value
Blank
Range
String within 511 characters
Example
features.action_uri_limit_ip = any
Parameter-
Configuration File
account.X.sip_server.Y.address
<MAC>.cfg
Configures the IP address or domain name
Description
of the SIP server Y for account X.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Format
IP Address or Domain Name
Default Value
Blank
Range
String within 256 characters
Example
account.1.sip_server.1.address =
yealink.pbx.com
Parameter-
Configuration File
account.X.sip_server.Y.port
<MAC>.cfg
Configures the port of the SIP server Y for
Description
account X.
X ranges from 1 to 6.
Y ranges from 1 to 2.
356
Format
Integer
Default Value
5060
Appendix
Range
0 to 65535
Example
account.1.sip_server.1.port = 5060
Parameter-
Configuration File
account.X.sip_server.Y.expires
<MAC>.cfg
Configures the registration expires (in
Description
seconds) of the SIP server Y for account X.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Format
Integer
Default Value
3600
Range
30 to 2147483647
Example
account.1.sip_server.1.expires = 3600
Parameter-
Configuration File
account.X.sip_server.Y.retry_counts
<MAC>.cfg
Configures the retry times for the IP phone
to resend requests when the SIP server Y
Description
does not respond correctly for account X.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Format
Integer
Default Value
3
Range
0 to 20
Example
account.1.sip_server.1.retry_counts = 3
Fallback Mode
Parameter-
Configuration File
account.X.fallback.redundancy_ty
<MAC>.cfg
pe
Configures the registration mode for the IP
Description
phone in fallback mode.
X ranges from 1 to 6.
Format
Integer
Default Value
0
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Valid values are:
Range
0-Concurrent registration
1-Successive registration
Example
account.1.fallback.redundancy_type = 0
Parameter-
Configuration File
account.X.fallback.timeout
<MAC>.cfg
Configures the time interval (in seconds)
for the IP phone to detect whether the
working server is available by sending the
Description
registration request after the fallback
server takes over call control.
It is only applicable to successive
registration mode.
X ranges from 1 to 6.
Format
Integer
Default Value
120
Range
10 to 2147483647
Example
account.1.fallback.timeout = 120
Failover Mode
Parameter-
Configuration File
account.X.sip_server.Y.failback_mo
<MAC>.cfg
de
Configures the mode for the IP phone to
Description
retry the primary server in failover mode.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Format
Integer
Default Value
0
Valid values are:
0-newRequests: all requests are sent to the
Range
primary server first, regardless of the last
used server.
1-DNSTTL: the IP phone retries to send
requests to the primary server after the
358
Appendix
timeout equal to the DNSTTL configured for
the server that the IP phone is registered to.
2-registration: the IP phone retries to send
REGISTER requests to the primary server
when registration renewal.
3-duration: the IP phone retries to send
requests to the primary server after the
timeout defined by the
account.X.sip_server.Y.failback_timeout
parameter.
Example
account.1.sip_server.1.failback_mode =
0
Parameter-
Configuration File
account.X.sip_server.Y.failback_tim
<MAC>.cfg
eout
Configures the timeout (in seconds) for the IP
phone to retry to send requests to the
primary server after failing over to the
current working server when the parameter
“account.X.sip_server.Y.failback_mode” is set
to 3 (duration).
Description
If you set the parameter to 0, the IP phone
will not send requests to the primary server
until a failover event occurs with the current
working server.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Format
Integer
Default Value
3600
Range
0, 60 to 65535
Example
account.1.sip_server.1.failback_timeout =
3600
Parameter-
Configuration File
account.X.sip_server.Y.register_on_
<MAC>.cfg
enable
Description
Enables or disables the IP phone to register
to the secondary server before sending
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
requests to the secondary server in the
failover mode.
X ranges from 1 to 6.
Y ranges from 1 to 2.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.sip_server.1.register_on_enable
=0
Parameter-
Configuration File
account.X.transport
<MAC>.cfg
Configures the transport type for account X.
If the parameter is set to 3 (DNS-NAPTR)
Description
and no server port is given, the IP phone
performs the DNS NAPTR and SRV queries
for the service type and port.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Valid values are:
0-UDP
Range
1-TCP
2-TLS
3-DNS-NAPTR
Example
account.1.transport = 3
Parameter-
Configuration File
account.X.naptr_build
<MAC>.cfg
Configures UDP SRV query or TCP/TLS SRV
Description
query for the IP phone to be performed
when no result is returned from NAPTR
360
Appendix
query.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Valid values are:
Range
0-UDP
1-TCP or TLS.
Example
account.1.naptr_build = 0
Parameter-
Configuration File
network.lldp.enable
<y0000000000xx>.cfg
Enables or disables LLDP feature on the IP
phone.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
network.lldp.enable = 1
Parameter-
Configuration File
network.lldp.packet_interval
<y0000000000xx>.cfg
Configures the amount of time (in seconds)
between the transmissions of LLDP packet.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It works only if the parameter
“network.lldp.enable” is set to 1 (Enabled).
Format
Integer
Default Value
60
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Range
1 to 3600
Example
network.lldp.packet_interval = 60
Internet Port
Parameter-
Configuration File
network.vlan.internet_port_enable
<y0000000000xx>.cfg
Enables or disables the IP phone to insert
VLAN tag on packet from the Internet port.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
network.vlan.internet_port_enable = 1
Parameter-
Configuration File
network.vlan.internet_port_vid
<y0000000000xx>.cfg
Configures the VLAN ID that is associated
with the particular VLAN.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
362
Format
Integer
Default Value
1
Range
1 to 4094
Example
network.vlan.internet_port_vid = 1
Appendix
Parameter-
Configuration File
network.vlan.internet_port_priority
<y0000000000xx>.cfg
Configures the priority value used for
passing VLAN packets.
7 is the highest priority, 0 is the lowest
Description
priority.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Range
0 to 7
Example
network.vlan.internet_port_priority = 0
PC Port
Parameter-
Configuration File
network.vlan.pc_port_enable
<y0000000000xx>.cfg
Enables or disables the IP phone to insert
VLAN tag on packet from the PC port.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
network.vlan.pc_port_enable = 1
Parameter-
Configuration File
network.vlan.pc_port_vid
<y0000000000xx>.cfg
Configures the VLAN ID that is associated
with the particular VLAN.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
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Format
Integer
Default Value
1
Range
1 to 4094
Example
network.vlan.pc_port_vid = 1
Parameter-
Configuration File
network.vlan.pc_port_priority
<y0000000000xx>.cfg
Configures the priority value used for
passing VLAN packets.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Range
0 to 7
Example
network.vlan.pc_port_priority = 0
DHCP VLAN Discovery
Parameter-
Configuration File
network.vlan.dhcp_enable
<y0000000000xx>.cfg
Enables or disables DHCP VLAN discovery
feature on the IP phone.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
364
Example
network.vlan.dhcp_enable = 1
Parameter-
Configuration File
network.vlan.dhcp_option
<y0000000000xx>.cfg
Description
Configures the DHCP option used to
Appendix
request the VLAN ID.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
132
Range
128 to 254
Example
network.vlan.dhcp_option = 132
Parameter-
Configuration File
network.vpn_enable
<y0000000000xx>.cfg
Enables or disables VPN feature on the IP
phone.
Description
Note: It is not applicable to SIP-T19P IP
phones. If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
network.vpn_enable = 1
Parameter-
Configuration File
openvpn.url
<y0000000000xx>.cfg
Configures the access URL of the OpenVPN
Description
TAR package.
Note: It is not applicable to SIP-T19P IP
phones.
Format
URL
Default Value
Blank
Range
String within 511 characters
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Example
openvpn.url =
http://192.168.10.25/OpenVPN.tar
Parameter-
Configuration File
network.qos.rtptos
<y0000000000xx>.cfg
Configures the DSCP for voice packets.
The default DSCP value for RTP packets is
Description
46 (Expedited Forwarding).
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
46
Range
0 to 63
Example
network.qos.rtptos = 46
Parameter-
Configuration File
network.qos.signaltos
<y0000000000xx>.cfg
Configures the DSCP for SIP packets.
The default DSCP value for SIP packets is 26
Description
(Assured Forwarding).
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
366
Format
Integer
Default Value
26
Range
0 to 63
Example
network.qos.signaltos = 26
Appendix
Parameter-
Configuration File
account.X.nat.nat_traversal
<MAC>.cfg
Enables or disables the NAT traversal for
Description
account X.
X ranges from 1 to 6.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.nat.nat_traversal = 0
Parameter-
Configuration File
account.X.nat.stun_server
<MAC>.cfg
Configures the IP address or the domain
Description
name of the STUN server for account X.
X ranges from 1 to 6.
Format
IP Address or Domain Name
Default Value
Blank
Range
String within 99 characters
Example
account.1.nat.stun_server =
218.107.220.201
Parameter-
Configuration File
account.X.nat.stun_port
<MAC>.cfg
Description
Configures the port of the STUN server.
X ranges from 1 to 6.
Format
Integer
Default Value
3478
Range
1024 to 65000
Example
account.1.nat.stun_port = 3478
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Parameter-
Configuration File
network.802_1x.mode
<y0000000000xx>.cfg
Configures the types of the 802.1X
authentication to use on the IP phone.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Valid values are:
0-Disabled
Range
1-EAP-MD5
2-EAP-TLS
3-PEAP-MSCHAPv2
4-EAP-TTLS/EAP-MSCHAPv2
Example
network.802_1x.mode = 1
Parameter-
Configuration File
network.802_1x.identity
<y0000000000xx>.cfg
Configures the identity used for
authenticating the IP phone.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
network.802_1x.identity = admin
Parameter-
Configuration File
network.802_1x.md5_password
<y0000000000xx>.cfg
Description
368
Configures the password used for
authenticating the IP phone.
Appendix
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect. It is only applicable to EAP-MD5,
PEAP-MSCHAPv2 and
EAP-TTLS/EAP-MSCHAPv2 protocols.
Format
String
Default Value
Blank
Range
String within 32 characters
Example
network.802_1x.md5_password =
admin123
Parameter-
Configuration File
network.802_1x.root_cert_url
<y0000000000xx>.cfg
Configures the access URL of the CA
certificate used for authentication.
Note: If you change this parameter, the IP
phone will reboot to make the change take
Description
effect. It is only applicable to EAP-TLS,
PEAP-MSCHAPv2 and
EAP-TTLS/EAP-MSCHAPv2 protocols. The
format of the certificate must be *.pem,
*.crt, *.cer or *.der.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
network.802_1x.root_cert_url =
http://192.168.1.10/ca.pem
Parameter-
Configuration File
network.802_1x.client_cert_url
<y0000000000xx>.cfg
Configures the access URL of the device
certificate used for authentication.
Note: If you change this parameter, the IP
Description
phone will reboot to make the change take
effect. It is only applicable to the EAP-TLS
protocol. The format of the certificate must
be *.pem or *.cer.
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Format
URL
Default Value
Blank
Range
String within 511 characters
Example
network.802_1x.client_cert_url =
http://192.168.1.10/ client.pem
Parameter-
Configuration File
managementserver.enable
<y0000000000xx>.cfg
Description
Enables or disables TR-069 feature on the IP
phone.
Format
Integer
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
managementserver.enable = 1
Parameter-
Configuration File
managementserver.username
<y0000000000xx>.cfg
Configures the user name to authenticate
Description
with the ACS. This string is set to the empty
string if no authentication is required.
Format
String
Default Value
Blank
Range
String within 128 characters
Example
managementserver.username = user1
Parameter-
Configuration File
managementserver.password
<y0000000000xx>.cfg
Configures the password to authenticate
Description
with the ACS. This string is set to the empty
string if no authentication is required.
370
Appendix
Format
String
Default Value
Blank
Range
String within 64 characters
Example
managementserver.password = pwd123
Parameter-
Configuration File
managementserver.url
<y0000000000xx>.cfg
Description
Configures the URL of the ACS.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
managementserver.url =
http://192.168.1.20/acs/
Parameter-
Configuration File
managementserver.connection_re
<y0000000000xx>.cfg
quest_username
Configures the user name for the IP phone
Description
to authenticate the incoming connection
requests.
Format
String
Default Value
Blank
Range
String within 128 characters
Example
managementserver.connection_request_
username = acsuser
Parameter-
Configuration File
managementserver.connection_re
<y0000000000xx>.cfg
quest_password
Configures the password for the IP phone to
Description
authenticate the incoming connection
requests.
Format
String
Default Value
Blank
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Range
Example
String within 64 characters
managementserver.connection_request_
password = acspwd
Parameter-
Configuration File
managementserver.periodic_infor
<y0000000000xx>.cfg
m_enable
Enables or disables the IP phone to
Description
periodically report its configuration
information to the ACS.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
managementserver.periodic_inform_ena
ble = 1
Parameter-
Configuration File
managementserver.periodic_infor
<y0000000000xx>.cfg
m_interval
Configures the interval (in seconds) to
Description
report its configuration information to the
ACS.
Format
Integer
Default Value
60
Range
5 to 4294967295
Example
rval = 60
Parameter-
Configuration File
network.ip_address_mode
<MAC>.cfg
Description
372
managementserver.periodic_inform_inte
Configures the IP address mode.
Note: If you change this parameter, the IP
Appendix
phone will reboot to make the change
take effect.
Format
Integer
Default Value
0
Valid values are:
Range
0-IPv4
1-IPv6
2-IPv4&IPv6
Example
network.ip_address_mode = 1
Parameter-
Configuration File
network.ipv6_internet_port.type
<MAC>.cfg
Configures the IPv6 address assignment
method.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
Format
Integer
Default Value
0
Valid values are:
Range
0-DHCP
1-Static IP Address
Example
network.ipv6_internet_port.type = 0
Parameter-
Configuration File
network.ipv6_static_dns_enable
<y0000000000xx>.cfg
Enables or disables the phone to use
manually configured static IPv6 DNS
when the parameter
Description
“network.ipv6_internet_port.type” is set to
0 (DHCP).
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
Format
Boolean
Default Value
0
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Valid values are:
Range
0-Disabled
1-Enabled
Example
network.ipv6_static_dns_enable= 0
Parameter-
Configuration File
network.ipv6_internet_port.ip
<MAC>.cfg
Configures the IPv6 address when the
IPv6 address assignment method is
configured as Static IP Address and the IP
Description
address mode is configured as IPv6 or
IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
Format
IPv6 Address
Default Value
Blank
Range
Not Applicable
Example
network.ipv6_internet_port.ip =
2026:1234:1:1:215:65ff:fe1f:caa
Parameter-
Configuration File
network.ipv6_prefix
<MAC>.cfg
Configures the prefix of the IPv6 address
when the IPv6 address assignment
method is configured as Static IP Address
Description
and the IP address mode is configured as
IPv6 or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
374
Format
Integer
Default Value
64
Range
0 to 128
Example
network.ipv6_prefix = 64
Appendix
Parameter-
Configuration File
network.ipv6_internet_port.gateway
<MAC>.cfg
Configures the gateway when the IPv6
address assignment method is
configured as Static IP Address and the IP
Description
address mode is configured as IPv6 or
IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
Format
IPv6 Address
Default Value
Blank
Range
Not Applicable
Example
network.ipv6_internet_port.gateway =
3036:1:1:c3c7:c11c:5447:23a6:255
Parameter-
Configuration File
network.ipv6_primary_dns
<MAC>.cfg
Configures the primary DNS server when
the IPv6 address assignment method is
configured as Static IP Address and the IP
Description
address mode is configured as IPv6 or
IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
Format
IPv6 Address
Default Value
Blank
Range
Not Applicable
Example
network.ipv6_primary_dns =
3036:1:1:c3c7: c11c:5447:23a6:256
Parameter-
Configuration File
network.ipv6_secondary_dns
<MAC>.cfg
Configures the secondary DNS server
Description
when the IPv6 address assignment
method is configured as Static IP Address
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and the IP address mode is configured as
IPv6 or IPv4&IPv6.
Note: If you change this parameter, the IP
phone will reboot to make the change
take effect.
Format
IPv6 Address
Default Value
Blank
Range
Not Applicable
network.ipv6_secondary_dns =
Example
2026:1234:1:1:c3c7:c11c:5447:23a6
Parameter-
Configuration File
features.headset_prior
<y0000000000xx>.cfg
Enables or disables headset prior feature.
If it is set to 1 (enabled), a user needs to
Description
press the HEADSET key to activate the
headset mode. The headset mode will not
be deactivated until the user presses the
HEADSET key again.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.headset_prior = 1
Parameter-
Configuration File
features.headset_training
<y0000000000xx>.cfg
Description
376
Enables or disables dual headset feature.
If it is set to 1 (Enabled), users can use two
Appendix
headsets on one phone. When the IP
phone joins in a cal, the users with the
headset connected to the headset jack
have a full-duplex conversation, while the
users with the headset connected to the
handset jack are only allowed to listen to.
Note: It is not applicable to SIP-T19P and
SIP-T21P IP phones.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
features.headset_training = 1
Parameter-
Configuration File
account.X.codec.Y.enable
<MAC>.cfg
Enables or disables the IP phone to use the
Description
specific codec for account X.
X ranges from 1 to 6.
Y ranges from 1 to 11.
Format
Boolean
For SIP-T20P/T22P/T26P/T28P IP phones:
When Y=1, the default value is 1;
When Y=2, the default value is 1;
When Y=3, the default value is 0;
When Y=4, the default value is 0;
Default Value
When Y=5, the default value is 1;
When Y=6, the default value is 1;
When Y=7, the default value is 0;
When Y=8, the default value is 0;
When Y=9, the default value is 0;
When Y=10, the default value is 0;
When Y=11, the default value is 0.
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For SIP-T19P/T21P IP phones:
When Y=1, the default value is 1;
When Y=2, the default value is 1;
When Y=3, the default value is 0;
When Y=4, the default value is 0;
When Y=5, the default value is 1;
When Y=6, the default value is 1;
When Y=7, the default value is 0;
When Y=8, the default value is 0.
Valid values are:
Range
0-Disabled
1-Enabled
Example
account.1.codec.1.enable = 1
Parameter-
Configuration File
account.X.codec.Y.payload_type
<MAC>.cfg
Configures the codec for account X to use.
Description
X ranges from 1 to 6.
Y ranges from 1 to 11.
Format
String
For SIP-T20P/T22P/T26P/T28P IP phones:
When Y=1, the default value is PCMU;
When Y=2, the default value is PCMA;
When Y=3, the default value is G723_53;
When Y=4, the default value is G723_63;
When Y=5, the default value is G729;
When Y=6, the default value is G722;
Default Value
When Y=7, the default value is iLBC;
When Y=8, the default value is G726-16;
When Y=9, the default value is G726-24;
When Y=10, the default value is G726-32;
When Y=11, the default value is G726-40.
For SIP-T19P/T21P IP phones:
When Y=1, the default value is PCMU;
When Y=2, the default value is PCMA;
When Y=3, the default value is G723_53;
378
Appendix
When Y=4, the default value is G723_63;
When Y=5, the default value is G729;
When Y=6, the default value is G722;
When Y=7, the default value is iLBC;
When Y=8, the default value is G726-32.
Valid values are:
PCMU
PCMA
G729
G722
Range
G723_53
G723_63
G726-16
G726-24
G726-32
G726-40
iLBC
Example
account.1.codec.1.payload_type =
PCMU
Parameter-
Configuration File
account.X.codec.Y.priority
<MAC>.cfg
Configures the priority for the codec.
Description
X ranges from 1 to 6.
Y ranges from 1 to 11.
Format
Integer
For SIP-T20P/T22P/T26P/T28P IP phones:
When Y=1, the default value is 1;
When Y=2, the default value is 2;
When Y=3, the default value is 0;
Default Value
When Y=4, the default value is 0;
When Y=5, the default value is 3;
When Y=6, the default value is 4;
When Y=7, the default value is 0;
When Y=8, the default value is 0;
When Y=9, the default value is 0;
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When Y=10, the default value is 0;
When Y=11, the default value is 0.
For SIP-T19P/T21P IP phones:
When Y=1, the default value is 1;
When Y=2, the default value is 2;
When Y=3, the default value is 0;
When Y=4, the default value is 0;
When Y=5, the default value is 3;
When Y=6, the default value is 4;
When Y=7, the default value is 0;
When Y=8, the default value is 0.
Range
0 to 10
Example
account.1.codec.1.priority = 1
Parameter-
Configuration File
account.X.codec.Y.rtpmap
<MAC>.cfg
Configures the rtpmap.
Description
X ranges from 1 to 6.
Y ranges from 1 to 11.
Format
Integer
For SIP-T20P/T22P/T26P/T28P IP phones:
When Y=1, the default value is 0;
When Y=2, the default value is 8;
When Y=3, the default value is 4;
When Y=4, the default value is 4;
When Y=5, the default value is 18;
When Y=6, the default value is 9;
Default Value
When Y=7, the default value is 106;
When Y=8, the default value is 103;
When Y=9, the default value is 104;
When Y=10, the default value is 102;
When Y=11, the default value is 105.
For SIP-T19P/T21P IP phones:
When Y=1, the default value is 0;
When Y=2, the default value is 8;
380
Appendix
When Y=3, the default value is 4;
When Y=4, the default value is 4;
When Y=5, the default value is 18;
When Y=6, the default value is 9;
When Y=7, the default value is 106;
When Y=8, the default value is 102.
Range
0 to 127
Example
account.1.codec.1.rtpmap = 0
Ptime
Parameter-
Configuration File
account.X.ptime
<MAC>.cfg
Configures the ptime (in milliseconds) for
Description
the codec.
X ranges from 1 to 6.
Format
Integer
Default Value
20
Valid values are:
Range
0 (Disabled)
10, 20, 30, 40, 50, 60
Example
account.1.ptime = 20
Parameter-
Configuration File
voice.echo_cancellation
<y0000000000xx>.cfg
Description
Enables or disables AEC feature on the IP
phone.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
voice.echo_cancellation = 1
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Parameter-
Configuration File
voice.vad
<y0000000000xx>.cfg
Description
Enables or disables VAD feature on the IP
phone.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
voice.vad = 1
Parameter-
Configuration File
voice.cng
<y0000000000xx>.cfg
Description
Enables or disables CNG feature on the IP
phone.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
382
Example
voice.cng = 1
Parameter-
Configuration File
voice.jib.adaptive
<y0000000000xx>.cfg
Description
Configures the type of jitter buffer.
Format
Integer
Default Value
1
Range
Valid values are:
Appendix
0-Fixed
1-Adaptive
Example
voice.jib.adaptive = 1
Parameter-
Configuration File
voice.jib.min
<y0000000000xx>.cfg
Configures the minimum delay time for jitter
Description
buffer.
Note: It works only if the parameter
“voice.jib.adaptive” is set to 1 (Adaptive).
Format
Integer
Default Value
60
Range
0 to 400
Example
voice.jib.min = 60
Parameter-
Configuration File
voice.jib.max
<y0000000000xx>.cfg
Configures the maximum delay time for
Description
jitter buffer.
Note: It works only if the parameter
“voice.jib.adaptive” is set to 1 (Adaptive).
Format
Integer
Default Value
240
Range
0 to 400
Example
voice.jib.max = 300
Parameter-
Configuration File
voice.jib.normal
<y0000000000xx>.cfg
Configures the fixed delay time for jitter
Description
buffer.
Note: It works only if the parameter
“voice.jib.adaptive” is set to 0 (Fixed).
Format
Integer
Default Value
120
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Range
0 to 400
Example
voice.jib.mormal = 120
Parameter-
Configuration File
account.X.transport
<MAC>.cfg
Configures the transport type for account X.
If it is set to 2 (TLS), the SIP message of this
Description
account will be encrypted after the
successful TLS negotiation.
X ranges from 1 to 6.
Format
Integer
Default Value
0 (UDP)
Valid values are:
0-UDP
Range
1-TCP
2-TLS
3-DNS-NAPTR
Example
account.1.transport = 2
Parameter-
Configuration File
security.trust_certificates
<y0000000000xx>.cfg
Enables or disables the IP phone to
authenticate the connecting server based
Description
on the trusted certificates list.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
1
Range
384
Valid values are:
0-Disabled
Appendix
1-Enabled
Example
security.trust_certificates = 1
Parameter-
Configuration File
security.ca_cert
<y0000000000xx>.cfg
Configures the type of certificates the IP
phone used to authenticate the connecting
Description
server.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
2
Valid values are:
Range
0-Default certificates
1-Custom certificates
2-All certificates
Example
security.ca_cert = 2
Parameter-
Configuration File
security.cn_validation
<y0000000000xx>.cfg
Enables or disables the IP phone to
mandatorily validate the CommonName or
SubjectAltName of the certificate sent by
Description
the connecting server.
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
security.cn_validation = 0
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Parameter-
Configuration File
security.dev_cert
<y0000000000 xx>.cfg
Configures the type of certificates the IP
phone sends for authentication.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Valid values are:
Range
0-Default certificates
1-Custom certificates
Example
security.dev_cert = 0
Parameter-
Configuration File
trusted_certificates.url
<y0000000000xx>.cfg
Configures the access URL of the certificate
Description
used to authenticate the connecting server.
Note: The certificate you want to upload
must be in *.pem, *.crt, *.cer or *.der format.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
trusted_certificates.url =
http://192.168.1.20/tc.crt
Parameter-
Configuration File
server_certificates.url
<y0000000000xx>.cfg
Configures the access URL of the certificate
Description
the IP phone sends for authentication.
Note: The certificate you want to upload
must be in *.pem or *.cer format.
Format
386
URL
Appendix
Default Value
Blank
Range
String within 511 characters
Example
server_certificates.url =
http://192.168.1.20/ca.pem
Parameter-
Configuration File
account.X.srtp_encryption
<MAC>.cfg
Configures whether to use voice encryption
service.
If it is set to 1 (Optional), the IP phone will
Description
negotiate with the other IP phone what
type of encryption to utilize for the session.
If it is set to 2 (Compulsory), the IP phone is
forced to use SRTP during a call.
X ranges from 1 to 6.
Format
Integer
Default Value
0
Valid values are:
Value
0-Disabled
1-Optional
2-Compulsory
Example
account.1.srtp_encryption = 0
Parameter-
Configuration File
auto_provision.aes_key_in_file
<y0000000000xx>.cfg
Enables or disables the IP phone to decrypt
configuration files using the encrypted AES
keys.
If it is set to 1 (Enabled), the IP phone will
Description
download <y0000000000xx_Security>.enc
and <MAC_Security>.enc files during auto
provisioning, and then decrypts these files
into the plaintext keys (e.g., key2, key3)
respectively using the phone built-in key
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(e.g., key1). The IP phone then decrypts the
encrypted configuration files using
corresponding key (e.g., key2, key3).
If it is set to 0 (Disabled), the IP phone will
decrypt the encrypted configuration files
using plaintext AES keys configured on the
IP phone.
Format
Boolean
Default Value
0
Valid values are:
Value
0-Disabled
1-Enabled
Example
auto_provision.aes_key_in_file = 0
Parameter-
Configuration File
auto_provision.aes_key_16.com
<y0000000000xx>.cfg
Configures the plaintext AES key which is
used to decrypt the <y0000000000xx>.cfg
Description
file.
Note: It works only if the parameter
“auto_provision.aes_key_in_file” is set to 0
(Disabled).
Format
String
Default Value
Blank
Range
Example
16 characters and the supported
characters contain: 0 ~ 9, A ~ Z, a ~ z
auto_provision.aes_key_16.com =
0123456789abcdef
Parameter-
Configuration File
auto_provision.aes_key_16.mac
<y0000000000xx>.cfg
Configures the plaintext AES key which is
used to decrypt the <MAC>.cfg file.
Description
Note: It works only if the parameter
“auto_provision.aes_key_in_file” is set to 0
(Disabled).
Format
388
String
Appendix
Default Value
Range
Example
Blank
16 characters and the supported
characters contain: 0 ~ 9, A ~ Z, a ~ z
auto_provision.aes_key_16.mac =
0123456789abmins
Parameter-
Configuration File
auto_provision.update_file_mode
<y0000000000xx>.cfg
Enables or disables the IP phone to update
Description
encrypted configuration settings only
during auto provisioning.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
auto_provision.update_file_mode = 0
Parameter-
Configuration File
firmware.url
<y0000000000xx>.cfg
Configures the access URL of firmware.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
firmware.url =
http://192.168.1.20/2.72.0.1.rom
Parameter-
Configuration File
auto_provision.power_on
<y0000000000xx>.cfg
Description
Enables or disables the IP phone to perform
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an auto provisioning process when
powered on.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
auto_provision.power_on = 1
Parameter-
Configuration File
auto_provision.repeat.enable
< y0000000000xx >.cfg
Description
Enables or disables the IP phone to check
new configuration repeatedly.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
auto_provision.repeat.enable =0
Parameter-
Configuration File
auto_provision.repeat.minutes
< y0000000000xx >.cfg
Configures the interval (in minutes) for the
IP phone to check new configuration.
Description
Note: It works only if the parameter
“auto_provision.repeat.enable” is set to
1(Enabled).
390
Format
Integer
Default Value
1440
Range
1 to 43200
Example
auto_provision.repeat.minutes = 1000
Appendix
Parameter-
Configuration File
auto_provision.weekly.enable
< y0000000000xx >.cfg
Description
Enables or disables the IP phone to check
new configuration weekly.
Format
Boolean
Default Value
0
Valid values are:
Range
0-Disabled
1-Enabled
Example
auto_provision.weekly.enable =0
Parameter-
Configuration File
auto_provision.weekly.begin_time
< y0000000000xx >.cfg
Configures the begin time of the day for the
IP phone to check new configuration
Description
weekly.
Note: It works only if the parameter
“auto_provision.weekly.enable” is set to
1(Enabled).
Format
Time
Default Value
00:00
Range
00:00 to 23:59
Example
auto_provision.weekly.begin_time = 01:30
Parameter-
Configuration File
auto_provision.weekly.end_time
< y0000000000xx >.cfg
Configures the end time of the day for the
IP phone to check new configuration
Description
weekly.
Note: It works only if the parameter
“auto_provision.weekly.enable” is set to
1(Enabled).
Format
Time
Default Value
00:00
Range
00:00 to 23:59
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Example
auto_provision.weekly.end_time = 21:30
Parameter-
Configuration File
auto_provision.weekly.dayofweek
< y0000000000xx >.cfg
Description
Configures the days of the week for the IP
phone to check new configuration weekly.
Format
Integer
Default Value
0123456
Valid values are:
0-Sunday
1-Monday
Range
2-Tuesday
3-Wednesday
4-Thursday
5-Friday
6-Saturday
Example
0123456
Parameter-
Configuration File
dialplan_replace_rule.url
<y0000000000xx>.cfg
Description
Configures the access URL of the replace
rule template.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
392
auto_provision.weekly.dayofweek =
dialplan_replace_rule.url =
http://192.168.10.25/dialplan.xml
Appendix
Parameter-
Configuration File
dialplan_dialnow.url
<y0000000000xx>.cfg
Description
Configures the access URL of the dial-now
template.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
dialplan_dialnow.url =
http://192.168.10.25/dialnow.xml
Parameter-
Configuration File
custom_softkey_call_failed.url
<y0000000000xx>.cfg
Configures the access URL of the custom
Description
file for the soft key presented on the LCD
screen when in the CallFailed state.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
download the CallFailed state file from
the “XMLfiles” directory on provisioning
Example
server 10.2.8.16 using 8080 port.
custom_softkey_call_failed.url =
http://10.2.8.16:8080/XMLfiles/CallFailed.x
ml
Parameter-
Configuration File
custom_softkey_call_in.url
<y0000000000xx>.cfg
Configures the access URL of the custom
Description
file for the soft key presented on the LCD
screen when in the CallIn state.
Format
URL
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Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
download the CallIn state file from the
Example
“XMLfiles” directory on provisioning
server 10.2.8.16 using 8080 port.
custom_softkey_call_in.url =
http://10.2.8.16:8080/XMLfiles/CallIn.xml
Parameter-
Configuration File
custom_softkey_connecting.url
<y0000000000xx>.cfg
Configures the access URL of the custom
Description
file for the soft key presented on the LCD
screen when in the Connecting state.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
download the Connecting state file from
the “XMLfiles” directory on provisioning
Example
server 10.2.8.16 using 8080 port.
custom_softkey_connecting.url =
http://10.2.8.16:8080/XMLfiles/Connecting.
xml
Parameter-
Configuration File
custom_softkey_dialing.url
<y0000000000xx>.cfg
Configures the access URL of the custom
Description
file for the soft key presented on the LCD
screen when in the Dialing state.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
Example
download the Dialing state file from the
“XMLfiles” directory on provisioning
server 10.2.8.16 using 8080 port.
394
Appendix
custom_softkey_dialing.url =
http://10.2.8.16:8080/XMLfiles/Dialing.xml
Parameter-
Configuration File
custom_softkey_ring_back.url
<y0000000000xx>.cfg
Configures the access URL of the custom
Description
file for the soft key presented on the LCD
screen when in the RingBack state.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
download the RingBack state file from
the “XMLfiles” directory on provisioning
Example
server 10.2.8.16 using 8080 port.
custom_softkey_ring_back.url =
http://10.2.8.16:8080/XMLfiles/RingBack.x
ml
Parameter-
Configuration File
custom_softkey_talking.url
<y0000000000xx>.cfg
Configures the access URL of the custom file
Description
for the soft key presented on the LCD screen
when in the Talking state.
Format
URL
Default Value
Blank
Range
String within 511 characters
The following example uses HTTP to
download the Talking state file from the
Example
“XMLfiles” directory on provisioning
server 10.2.8.16 using 8080 port.
custom_softkey_talking.url =
http://10.2.8.16:8080/XMLfiles/Talking.xml
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Parameter-
Configuration File
local_contact.data.url
<y0000000000xx>.cfg
Description
Configures the access URL of the local
contact file.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
local_contact.data.url =
http://192.168.10.25/contact.xml
Parameter-
Configuration File
remote_phonebook.data.X.url
<y0000000000xx>.cfg
Configures the access URL of the remote
Description
XML phone book.
X ranges from 1 to 5.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
http://192.168.1.20/phonebook.xml
Parameter-
Configuration File
directory_setting.url
<y0000000000xx>.cfg
Description
396
remote_phonebook.data.1.url =
Configures the access URL of the directory
template.
Format
URL
Default Value
Blank
Range
String within 511 characters
Appendix
Example
directory_setting.url =
http://192.168.1.20/favorite_setting.xml
Parameter-
Configuration File
super_search.url
<y0000000000xx>.cfg
Description
Configures the access URL of the super
search template.
Format
URL
Default Value
Blank
Range
String within 511 characters
Example
super_search.url =
http://192.168.1.20/super_search.xml
Parameter-
Configuration File
syslog.mode
<y0000000000xx>.cfg
Configures the syslog mode.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
0
Range
0-Local
1-Server
Example
syslog.mode = 1
Parameter-
Configuration File
syslog.server
<y0000000000xx>.cfg
Description
Configures the IP address or domain name
of the syslog server where to export the log
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files.
Note: It works only if the parameter
“syslog.mode” is set to 1 (Server). If you
change this parameter, the IP phone will
reboot to make the change take effect.
Format
IP Address or Domain Name
Default Value
Blank
Range
String within 99 characters
Example
syslog.server = 192.168.1.50
Parameter-
Configuration File
syslog.log_level
<y0000000000xx>.cfg
Configures the severity level of the logs to
be reported to a log file.
Description
Note: If you change this parameter, the IP
phone will reboot to make the change take
effect.
Format
Integer
Default Value
3
Range
0 to 6
Example
syslog.log_level = 3
Parameter-
Configuration File
watch_dog.enable
<y0000000000xx>.cfg
Description
Enables or disables Watch Dog feature.
Format
Boolean
Default Value
1
Valid values are:
Range
0-Disabled
1-Enabled
Example
398
watch_dog.enable = 1
Appendix
This section provides the DSS key parameters you can configure on IP phones. DSS key
consists of memory key, line key and programable key. The following table lists the
number of DSS keys you can configure for each phone model:
Note
Phone Model
Line Key
Memory Key
Programable Key
SIP-T28P
6
10
14
SIP-T26P
3
10
14
SIP-T22P
3
/
13
SIP-T21P
2
/
11
SIP-T20P
2
/
9
SIP-T19P
/
/
11
The programable key takes effect only if the IP phone is idle.
DSS key can be assigned with various key features. The parameters of the DSS key are
detailed in the following:
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures key feature for the DSS key.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
Description
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
For memory keys:
Valid types are:

N/A
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
Conference

Forward

Transfer

Hold

DND

Call Return

SMS

Directed Pickup

Call Park

DTMF

Voice Mail

Speed Dial

Intercom

Line

BLF

URL

Group Listening

XML Group

Group Pickup

Multicast Paging

Record

XML Browser

URL Record

LDAP

Prefix

Zero Touch

ACD

Local Group

Custom Button

Keypad Lock

Directory
For line keys:
Valid types are:
400

Conference

Forward

Transfer

Hold
Appendix

DND

Call Return

SMS (not applicable to SIP-T20P IP phones)

Directed Pickup

Call Park

DTMF

Voice Mail

Speed Dial

Intercom

Line

BLF

Group Listening

XML Group (not applicable to SIP-T20P IP
phones)

Group Pickup

Multicast Paging

Record

XML Browser

Hot Desking

URL Record

LDAP (not applicable to SIP-T20P IP phones)

Prefix

Zero Touch

ACD

Local Group

Custom Button

Keypad Lock

Directory
For programable keys:
Valid types are:

N/A

Forward

DND

Call Return

SMS (not applicable to SIP-T20P IP phones)

Directed Pickup

Spead Dial
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
XML Group (not applicable to SIP-T19P IP
phones)

Group Pickup

XML Browser

History

Menu

Switch Account (not applicable to SIP-T19P
IP phones)

New SMS (not applicable to SIP-T20P IP
phones)

Status

Hot Desking (only applicable to SIP-T19P IP
phones)

LDAP (not applicable to SIP-T19P and
SIP-T20P IP phones)

Prefix (not applicable to SIP-T20P IP phones)

Zero Touch

Local Directory

Local Group

XML Directory (not applicable to SIP-T20P IP
phones)
Format

Keypad Lock

Directory
Integer
For the memory key, the default value is 0 (N/A).
For the line key, the default value is 15 (Line).
For the programable key,
when x=1, the default value is 28.
when x=2, the default value is 61.
when x=3, the default value is 5.
Default Value
when x=4, the default value is 30.
when x=5, the default value is 28.
when x=6, the default value is 29.
when x=7, the default value is 31.
when x=8, the default value is 31.
when x=9, the default value is 33.
when x=10/11/12/13, the default value is 0.
402
Appendix
when x=14, the default value is 2.
Valid values are:
0-N/A
1-Conference
2-Forward
3-Transfer
4-Hold
5-DND
7-Call Return
8-SMS
9-Directed Pickup
10-Call Park
11-DTMF
12-Voice Mail
13-Speed Dial
14-Intercom
15-Line
16-BLF
Range
17-URL
18-Group Listening
22-XML Group
23-Group Pickup
24-Multicast Paging
25-Record
27-XML Browser
28-History
30-Menu
31-Switch Account
32-New SMS
33-Status
34-Hot Desking
35-URL Record
38-LDAP
40-Prefix
41-Zero Touch
42-ACD
43-Local Directory
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45-Local Group
47-XML Directory
49-Custom Button
50-Keypad Lock
61-Directory
Example
memorykey.1.type = 8
Parameter-
Configuration File
memorykey.X.line
<y0000000000xx>.cfg
Parameterlinekey.X.line
Parameterprogramablekey.X.line
Configures the desired line to apply the key
feature.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
When assigning the following features, you do
not need to configure this parameter:
Description

DTMF

Prefix

XML Browser

LDAP (not applicable to SIP-T19P and
SIP-T20P)
404

Conference

Forward

Hold

DND

Call Return

SMS (not applicable to SIP-T20P)

Record
Appendix
Format

URL Record

Multicast Paging

Group Listening

Local Group

XML Group (not applicable to SIP-T20P)

ACD

Hot Desking

Zero Touch

URL (not applicable to SIP-T20P)

Keypad Lock

Directory
Integer
For the memory key and programable key, the
default value is not applicable.
Default Value
For the line key, when x=1, the default value is 1.
When x=2, the default value is 2.
…
When x=6, the default value is 6.
Valid values are:
1 to 6 (for SIP-T28P)
1 to 3 (for SIP-T26P/T22P)
1 to 2 (for SIP-T21P/T20P)
Range
1 (for SIP-T19P)
1-Line 1
2-Line 2
…
6-Line 6
Example
memorykey.1.line = 2
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Parameterprogramablekey.X.value
Description
Configures the value for some key features.
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For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
String
Default Value
Blank
Range
String within 99 characters
When you assign the Speed Dial to the
Example
memory key, this parameter is used to specify
the number you want to dial out.
memorykey.1.value = 1001
Parameter-
Configuration File
memorykey.X.pickup_value
<y0000000000xx>.cfg
Parameterlinekey.X.pickup_value
Configures the pickup code for BLF feature.
Description
This parameter is only applicable to BLF feature.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Format
String
Default Value
Blank
Range
String within 256 characters
Example
memorykey.1.pickup_value = *88
Parameter-
Configuration File
memorykey.X.xml_phonebook
<y0000000000xx>.cfg
Parameterlinekey.X.xml_phonebook
Parameterprogramablekey.X.xml_phone
book
406
Appendix
Configures the desired group or remote phone
book when multiple groups or remote phone
books are configured on the IP phone.
This parameter is only applicable to Local
Group/XML Group features.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
Description
ranges from 1 to 14).
When the key feature is configured as Local
Group, valid values are:
0-All contacts
1-First local group
…
5-Fifth local group
When the key feature is configured as XML
Group (remote phone book), valid values are:
0-First XML group
1-Second XML group
…
4-Fifth XML group
Format
Integer
Default Value
0
Range
0 to 5
Example
Configures the second remote phone book.
memorykey.1.xml_phonebook = 1
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Keypad Lock Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as a keypad lock key on
the IP phone.
The digit 50 stands for the key type Keypad
Lock.
For the memory key, x ranges from 1 to 10.
Description
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Value
50
Example
memorykey.1.type = 50
DND Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as a DND key on the IP
phone.
Description
The digit 5 stands for the key type DND.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
408
Appendix
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Value
5
Example
memorykey.1.type = 5
Directed Call Pickup Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as a directed call pickup
key on the IP phone.
The digit 9 stands for the key type Directed
Pickup.
For the memory key, x ranges from 1 to 10.
Description
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Value
9
Example
memorykey.1.type = 9
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
Configuration File
memorykey.X.line
<y0000000000xx>.cfg
Parameterlinekey.X.line
Parameterprogramablekey.X.line
Configures the desired line to apply the directed
call pickup key.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Description
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Valid values are:
1 to 6 (for SIP-T28P)
1 to 3 (for SIP-T26P/T22P)
1 to 2 (for SIP-T21P/T20P)
Range
1 (for SIP-T19P)
1-Line 1
2-Line 2
…
6-Line 6
Example
memorykey.1.line = 1
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Parameterprogramablekey.X.value
Configures the directed call pickup feature code
Description
followed by the monitored extension.
For the memory key, x ranges from 1 to 10.
410
Appendix
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
String
Range
String within 99 characters
Example
memorykey.1.value = *971001
Group Call Pickup Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as a group call pickup key
on the IP phone.
The digit 23 stands for the key type Group
Pickup.
For the memory key, x ranges from 1 to 10.
Description
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Value
23
Example
memorykey.1.type = 23
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
Configuration File
memorykey.X.line
<y0000000000xx>.cfg
Parameterlinekey.X.line
Parameterprogramablekey.X.line
Configures the desired line to apply the group
call pickup key.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Description
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Valid values are:
1 to 6 (for SIP-T28P)
1 to 3 (for SIP-T26P/T22P)
1 to 2 (for SIP-T21P/T20P)
Range
1 (for SIP-T19P)
1-Line 1
2-Line 2
…
6-Line 6
Example
memorykey.1.line = 1
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Parameterprogramablekey.X.value
Configures the group call pickup feature code.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
412
Appendix
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
String
Range
String within 99 characters
Example
memorykey.1.value = *98
Call Return Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as a call return key on the
IP phone.
The digit 7 stands for the key type Call Return.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Description
For the programable key, x ranges from 1 to 14
(For SIP-T19P IP phones, x=1-9, 13, 14; For
SIP-T20P IP phones, x=5-12, 14; For SIP-T21P IP
phones, x=1-10, 14; For SIP-T22P IP phones,
x=1-10, 12-14; For SIP-T26P/T28P IP phones, x
ranges from 1 to 14).
Format
Integer
Value
7
Example
memorykey.1.type = 7
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Call Park Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as a call park key on the
IP phone.
Description
The digit 10 stands for the key type Call Park.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Value
10
Example
memorykey.1.type = 10
Parameter-
Configuration File
memorykey.X.line
<y0000000000xx>.cfg
Parameterlinekey.X.line
Configures the desired line to apply the call
park key.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Valid values are:
1 to 6 (for SIP-T28P)
1 to 3 (for SIP-T26P/T22P)
Range
1 to 2 (for SIP-T21P/T20P)
1-Line 1
2-Line 2
…
6-Line 6
Example
414
memorykey.1.line = 1
Appendix
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Configures the call park feature code.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
String
Range
String within 99 characters
Example
memorykey.1.value = *99
Intercom Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as an intercom key.
The digit 14 stands for the key type Intercom.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Value
14
Example
memorykey.1.type = 14
Parameter-
Configuration File
memorykey.X.line
<y0000000000xx>.cfg
Parameterlinekey.X.line
Configures the desired line to apply the
Description
intercom key.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Valid values are:
1 to 6 (for SIP-T28P)
1 to 3 (for SIP-T26P/T22P)
Range
1 to 2 (for SIP-T21P/T20P)
1-Line 1
2-Line 2
…
6-Line 6
Example
memorykey.1.line = 1
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Configures the intercom number.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
String
Range
String within 99 characters
Example
memorykey.1.value = 1008
LDAP Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as an LDAP key on the IP
Description
phone.
The digit 38 stands for the key type LDAP.
For the memory key, x ranges from 1 to 10.
416
Appendix
For the line key, x ranges from 1 to 6.
For the programable key, x ranges from 1 to 14.
(For SIP-T21P IP phones, x=1-10, 14; For SIP-T22P
IP phones, x=1-10, 12-14; For SIP-T26P/T28P IP
phones, x ranges from 1 to 14).
Note: It is not applicable to SIP-T19P and SIP-T20P
IP phones.
Format
Integer
Value
38
Example
memorykey.1.type = 38
BLF Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as a BLF key on the IP
phone.
Description
The digit 16 stands for the key type BLF.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Value
16
Example
memorykey.1.type = 16
Parameter-
Configuration File
memorykey.X.line
<y0000000000xx>.cfg
Parameterlinekey.X.line
Configures the desired line to apply the BLF key.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Valid values are:
1 to 6 (for SIP-T28P)
1 to 3 (for SIP-T26P/T22P)
Range
1 to 2 (for SIP-T21P/T20P)
1-Line 1
2-Line 2
…
6-Line 6
Example
memorykey.1.line = 1
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Configures the number of the monitored user.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
String
Range
String within 99 characters
Example
memorykey.1.value = 1008
Parameter-
Configuration File
memorykey.X.pickup_value
<y0000000000xx>.cfg
Parameterlinekey.X.pickup_value
Configures the pickup code for BLF feature.
This parameter only applies to BLF feature.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
418
Format
String
Default Value
Blank
Range
String within 256 characters
Example
memorykey.1.pickup_value = *88
Appendix
ACD Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as an ACD key on the IP
phone.
Description
The digit 42 stands for the key type ACD.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Value
42
Example
memorykey.1.type = 42
Multicast Paging Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as a multicast paging key
on the IP phone.
The digit 24 stands for the key type Multicast
Description
Paging.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Value
24
Example
memorykey.1.type = 24
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Configures the multicast IP address and port
number.
For the memory key, x ranges from 1 to 10.
Description
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
The valid multicast IP addresses range from
224.0.0.0 to 239.255.255.255.
Format
IP Address
Range
224.0.0.0 to 239.255.255.255
Example
memorykey.1.value = 224.5.5.6:10008
Record Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as a record key on the IP
phone.
Description
The digit 25 stands for the key type Record.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
420
Format
Integer
Value
25
Example
memorykey.1.type = 25
Appendix
URL Record Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Configures a DSS key as a URL record key on
the IP phone.
Description
The digit 35 stands for the key type URL Record.
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
Integer
Value
35
Example
memorykey.1.type = 35
Parameter-
Configuration File
memorykey.X.value
<y0000000000xx>.cfg
Parameterlinekey.X.value
Configures the URL to record a call.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
Note: It is not applicable to SIP-T19P IP phones.
Format
String
Default Value
Blank
Range
String within 99 characters
Example
memorykey.1.value =
http://10.1.2.224/phonerecording.cgi
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Hot Desking Key
Parameter-
Configuration File
memorykey.X.type
<y0000000000xx>.cfg
Parameterlinekey.X.type
Parameterprogramablekey.X.type
Configures a DSS key as a hot desking key on
the IP phone.
The digit 34 stands for the key type Hot Desking.
Description
For the memory key, x ranges from 1 to 10.
For the line key, x ranges from 1 to 6.
For the programable key, x=1-9, 13, 14.
Note: You can configure a programable key as a
hot desking key on SIP-T19P IP phones only.
Format
Integer
Value
34
Example
memorykey.1.type = 34
This section describes how Yealink IP phones comply with the IETF definition of SIP as
described in RFC 3261.
This section contains compliance information in the following:

RFC and Internet Draft Support

SIP Request

SIP Header

SIP Responses

SIP Session Description Protocol (SDP) Usage
The following RFC’s and Internet drafts are supported:
422

RFC 1321—The MD5 Message-Digest Algorithm

RFC 1889—RTP Media control
Appendix

RFC 2112—Multipart MIME

RFC 2246—The TLS Protocol Version 1.0

RFC 2327—SDP: Session Description Protocol

RFC 2543—SIP: Session Initiation Protocol

RFC 2616—Hypertext Transfer Protocol -- HTTP/1.1

RFC 2617—Http Authentication: Basic and Digest access authentication

RFC 2782—A DNS RR for specifying the location of services (DNS SRV)

RFC 2806—URLs for Telephone Calls

RFC 2833—RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals

RFC2915—The Naming Authority Pointer (NAPTR) DNS Resource Record

RFC 3087—Control of Service Context using SIP Request-URI

RFC 3261—SIP: Session Initiation Protocol (replacement for RFC 2543)

RFC 3262—Reliability of Provisional Responses in the Session Initiation Protocol (SIP)

RFC 3263—Session Initiation Protocol (SIP): Locating SIP Servers

RFC 3264—An Offer/Answer Model with the Session Description Protocol (SDP)

RFC 3265—Session Initiation Protocol (SIP) - Specific Event Notification

RFC 3266—Support for IPv6 in Session Description Protocol (SDP)

RFC 3310—HTTP Digest Authentication Using Authentication and Key Agreement
(AKA)

RFC 3311—The Session Initiation Protocol (SIP) UPDATE Method

RFC 3312—Integration of Resource Management and SIP

RFC 3313—Private SIP Extensions for Media Authorization

RFC 3323—A Privacy Mechanism for the Session Initiation Protocol (SIP)

RFC 3324—Requirements for Network Asserted Identity

RFC 3325—SIP Asserted Identity

RFC 3326—The Reason Header Field for the Session Initiation Protocol (SIP)

RFC 3361—DHCP-for-IPv4 Option for SIP Servers

RFC 3372—SIP for Telephones (SIP-T): Context and Architectures

RFC 3420—Internet Media Type message/sipfrag

RFC 3428—Session Initiation Protocol (SIP) Extension for Instant Messaging

RFC 3455—Private Header (P-Header) Extensions to the SIP for the 3GPP

RFC 3486—Compressing the Session Initiation Protocol (SIP)

RFC 3489—STUN - Simple Traversal of User Datagram Protocol (UDP) Through
Network Address Translators (NATs)

RFC 3515—The Session Initiation Protocol (SIP) Refer Method
423
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones

RFC 3550—RTP , RTCP, IETF RFC 3550

RFC 3556—Session Description Protocol (SDP) Bandwidth Modifiers for RTCP
Bandwidth

RFC 3581—An Extension to the SIP for Symmetric Response Routing

RFC 3608—SIP Extension Header Field for Service Route Discovery During
Registration

RFC 3665—Session Initiation Protocol (SIP) Basic Call Flow Examples

RFC 3666—SIP Public Switched Telephone Network (PSTN) Call Flows.

RFC 3680—SIP Event Package for Registrations

RFC 3702—Authentication, Authorization, and Accounting Requirements for the SIP

RFC 3711—The Secure Real-time Transport Protocol (SRTP)

RFC 3725—Best Current Practices for Third Party Call Control (3pcc) in the Session
Initiation Protocol (SIP)

RFC 3842—A Message Summary and Message Waiting Indication Event Package
for the Session Initiation Protocol (SIP)

RFC 3856—A Presence Event Package for Session Initiation Protocol (SIP)

RFC 3890—A Transport Independent Bandwidth Modifier for the SDP

RFC 3891—The Session Initiation Protocol (SIP) “Replaces” Header

RFC 3892—The Session Initiation Protocol (SIP) Referred-By Mechanism

RFC 3959—The Early Session Disposition Type for SIP

RFC 3960—Early Media and Ringing Tone Generation in SIP

RFC3966—The tel URI for telephone number

RFC 3968—The Internet Assigned Number Authority (IANA) Header Field
Parameter Registry for the Session Initiation Protocol (SIP)

RFC 3969—The Internet Assigned Number Authority (IANA) Uniform Resource
Identifier (URI) Parameter Registry for the Session Initiation Protocol (SIP)

RFC 4028—Session Timers in the Session Initiation Protocol (SIP)

RFC 4235—An INVITE-Initiated Dialog Event Package for the Session Initiation
Protocol (SIP)
424

RFC 4244—An Extension to the SIP for Request History Information

RFC 4317—Session Description Protocol (SDP) Offer/Answer Examples

RFC 4353—A Framework for Conferencing with the SIP

RFC 4475—Session Initiation Protocol (SIP) Torture

RFC 4485—Guidelines for Authors of Extensions to the SIP

RFC 4504—SIP Telephony Device Requirements and Configuration

RFC 4566—SDP: Session Description Protocol.
Appendix

RFC 4568—Session Description Protocol (SDP) Security Descriptions for Media
Streams

RFC 4575—A SIP Event Package for Conference State

RFC 4579—SIP Call Control - Conferencing for User Agents

RFC 4662—A SIP Event Notification Extension for Resource Lists

RFC 5009—P-Early-Media Header

RFC 5079—Rejecting Anonymous Requests in SIP

RFC 5359—Session Initiation Protocol Service Examples

RFC 5589—Session Initiation Protocol (SIP) Call Control - Transfer

draft-levy-sip-diversion-04.txt—Diversion Indication in SIP

draft-ietf-sip-cc-transfer-05.txt—SIP Call Control - Transfer

draft-anil-sipping-bla-02.txt—Implementing Bridged Line Appearances (BLA) Using
Session Initiation Protocol (SIP)

draft-ietf-sip-privacy-04.txt—SIP Extensions for Network-Asserted Caller Identity
and Privacy within Trusted Networks

draft-ietf-sipping-cc-conferencing-03.txt—SIP Call Control - Conferencing for User
Agents
To find the applicable Request for Comments (RFC) document, go to
http://www.ietf.org/rfc.html and enter the RFC number.
The following SIP request messages are supported:
Method
REGISTER
Supported
Notes
Yes
Yealink IP phones support
mid-call changes such as
INVITE
Yes
placing a call on hold as
signaled by a new INVITE
that contains an existing
Call-ID.
ACK
Yes
CANCEL
Yes
BYE
Yes
OPTIONS
Yes
SUBSCRIBE
Yes
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Method
Supported
NOTIFY
Yes
REFER
Yes
PRACK
Yes
INFO
Yes
MESSAGE
Yes
UPDATE
Yes
PUBLISH
Yes
Notes
The following SIP request headers are supported:
Method
426
Supported
Accept
Yes
Alert-Info
Yes
Allow
Yes
Allow-Events
Yes
Authorization
Yes
Call-ID
Yes
Call-Info
Yes
Contact
Yes
Content-Length
Yes
Content-Type
Yes
CSeq
Yes
Diversion
Yes
Event
Yes
Expires
Yes
From
Yes
Max-Forwards
Yes
Min-SE
Yes
P-Asserted-Identity
Yes
Notes
Appendix
Method
Supported
P-Preferred-Identity
Yes
Proxy-Authenticate
Yes
Proxy-Authorization
Yes
RAck
Yes
Record-Route
Yes
Refer-To
Yes
Referred-By
Yes
Remote-Party-ID
Yes
Replaces
Yes
Require
Yes
Route
Yes
RSeq
Yes
Session-Expires
Yes
Subscription-State
Yes
Supported
Yes
To
Yes
User-Agent
Yes
Via
Yes
Notes
The following SIP responses are supported:
1xx Response—Information Responses
1xx Response
Supported
100 Trying
Yes
180 Ringing
Yes
181 Call Is Being Forwarded
Yes
183 Session Progress
Yes
Notes
2xx Response—Successful Responses
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
2xx Response
Supported
200 OK
Yes
202 Accepted
Yes
Notes
In REFER transfer.
3xx Response—Redirection Responses
3xx Response
Supported
300 Multiple Choices
Yes
301 Moved Permanently
Yes
302 Moved Temporarily
Yes
Notes
4xx Response—Request Failure Responses
4xx Response
400 Bad Request
Yes
401 Unauthorized
Yes
402 Payment Required
Yes
403 Forbidden
Yes
404 Not Found
Yes
405 Method Not Allowed
Yes
406 Not Acceptable
No
407 Proxy Authentication
Required
428
Supported
Yes
408 Request Timeout
Yes
409 Conflict
No
410 Gone
No
411 Length Required
No
413 Request Entity Too Large
No
414 Request-URI Too Long
Yes
415 Unsupported Media Type
Yes
416 Unsupported URI Scheme
No
420 Bad Extension
No
421 Extension Required
No
Notes
Appendix
4xx Response
Supported
423 Interval Too Brief
Yes
480 Temporarily Unavailable
Yes
481 Call/Transaction Does Not
Notes
Yes
Exist
482 Loop Detected
Yes
483 Too Many Hops
No
484 Address Incomplete
Yes
485 Ambiguous
No
486 Busy Here
Yes
487 Request Terminated
Yes
488 Not Acceptable Here
Yes
491 Request Pending
No
493 Undecipherable
No
5xx Response—Server Failure Responses
5xx Response
Supported
500 Internal Server Error
Yes
501 Not Implemented
Yes
502 Bad Gateway
No
503 Service Unavailable
No
504 Gateway Timeout
No
505 Version Not Supported
No
Notes
6xx Response—Global Responses
6xx Response
Supported
600 Busy Everywhere
Yes
603 Decline
Yes
604 Does Not Exist Anywhere
No
606 Not Acceptable
No
Notes
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
SDP Headers
v—Protocol version
o—Owner/creator and session
identifier
Supported
Yes
Yes
a—Media attribute
Yes
c—Connection information
Yes
m—Media name and transport
address
Yes
s—Session name
Yes
t—Active time
Yes
SIP uses six request methods:

INVITE—Indicates a user is being invited to participate in a call session.

ACK—Confirms that the client has received a final response to an INVITE request.

BYE—Terminates a call and can be sent by either the caller or the callee.

CANCEL—Cancels any pending searches but does not terminate a call that has
already been accepted.

OPTIONS—Queries the capabilities of servers.

REGISTER—Registers the address listed in the To header field with a SIP server.
The following types of responses are used by SIP and generated by the IP phone or the
SIP server:
430

SIP 1xx—Informational Responses

SIP 2xx—Successful Responses

SIP 3xx—Redirection Responses

SIP 4xx—Client Failure Responses

SIP 5xx—Server Failure Responses

SIP 6xx—Global Failure Responses
Appendix
The following figure illustrates the scenario of a successful call. In this scenario, the two
end users are User A and User B. User A and User B are located at Yealink SIP IP
phones.
The call flow scenario is as follows:
1.
User A calls User B.
2.
User B answers the call.
3.
User B hangs up.
User A
Proxy Server
User B
F1. INVITE B
F2. INVITE B
F3. 100 Trying
F4. 100 Trying
F5. 180 Ringing
F6. 180 Ringing
F7. 200 OK
F8. 200 OK
F9. ACK
F10. ACK
2-way RTP channel established
F11. BYE
F12. BYE
F13. 200 OK
F14. 200 OK
Step
Action
Description
User A sends a SIP INVITE message to a
proxy server. The INVITE request is an
F1
INVITE—User A to Proxy
invitation to User B to participate in a
Server
call session.
In the INVITE request:

The IP address of User B is inserted
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
in the Request-URI field.

User A is identified as the call
session initiator in the From field.

A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 100 Trying response
F3
100 Trying—User B to Proxy
to the proxy server. The 100 Trying
Server
response indicates that the INVITE
request has been received by User B.
The proxy server forwards the SIP 100
F4
100 Trying—Proxy Server to
Trying to User A to indicate that the
User A
INVITE request has been received by
User B.
User B sends a SIP 180 Ringing response
F5
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the User B is
being alerted.
The proxy server forwards the 180
F6
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 200 OK response to
F7
200 OK— User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
F8
432
200OK—Proxy Server to User
The proxy server forwards the 200 OK
A
message to User A. The 200 OK
Appendix
Step
Action
Description
response notifies User A that the
connection has been made.
User A sends a SIP ACK to the proxy
F9
ACK—User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the SIP ACK to
F10
ACK—Proxy Server to User B
User B. The ACK confirms that the proxy
server has received the 200 OK
response. The call session is now active.
User B terminates the call session by
F11
BYE—User B to Proxy Server
sending a SIP BYE request to the proxy
server. The BYE request indicates that
User B wants to release the call.
The proxy server forwards the SIP BYE
F12
BYE—Proxy Server to User A
request to User A to notify that User B
wants to release the call.
User A sends a SIP 200 OK response to
F13
200 OK—User A to Proxy
Server
the proxy server. The 200 OK response
indicates that User A has received the
BYE request. The call session is now
terminated.
The proxy server forwards the SIP 200
F14
200 OK—Proxy Server to User
OK response to User B to indicate that
B
User A has received the BYE request.
The call session is now terminated.
The following figure illustrates the scenario of an unsuccessful call caused by the called
user’s being busy. In this scenario, the two end users are User A and User B. User A and
User B are located at Yealink SIP IP phones.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The call flow scenario is as follows:
1.
User A calls User B.
2.
User B is busy on the IP phone and unable or unwilling to take another call.
The call cannot be set up successfully.
User A
Proxy Server
User B
F1. INVITE B
F2. INVITE B
F3. 100 Trying
F4. 100 Trying
F5. 486 Busy Here
F6. 486 Busy Here
F7. ACK
F8. ACK
Step
Action
Description
User A sends the INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

F1
session initiator in the From field.
INVITE—User A to Proxy
Server
User A is identified as the call

A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
434
Appendix
Step
Action
Description
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. Proxy server forwards
the INVITE message to User B.
User B sends a SIP 100 Trying response
F3
100 Trying—User B to Proxy
to the proxy server. The 100 Trying
Server
response indicates that the INVITE
request has been received by User B.
The proxy server forwards the SIP 100
F4
100 Trying—Proxy Server to
Trying to User A to indicate that the
User A
INVITE request has already been
received.
User B sends a SIP 486 Busy Here
response to the proxy server. The 486
F5
486 Busy Here—User B to
Proxy Server
Busy Here response is a client error
response indicating that User B is
successfully connected but User B is
busy on the IP phone and unable or
unwilling to take the call.
F6
486 Busy Here—Proxy Server
to User A
The proxy server forwards the 486 Busy
Here response to notify User A that User
B is busy.
User A sends a SIP ACK to the proxy
F7
ACK—User A to Proxy Server
server. The SIP ACK message indicates
that User A has received the 486 Busy
Here message.
The proxy server forwards the SIP ACK
F8
ACK—Proxy Server to User B
to User B to indicate that the 486 Busy
Here message has already been
received.
The following figure illustrates the scenario of an unsuccessful call caused by the called
user’s no answering. In this scenario, the two end users are User A and User B. User A
and User B are located at Yealink SIP IP phones.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The call flow scenario is as follows:
1.
User A calls User B.
2.
User B does not answer the call.
3.
User A hangs up.
The call cannot be set up successfully.
User A
Proxy Server
User B
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. CANCEL
F6. CANCEL
F7. 200 OK
F8. 200 OK
436
Appendix
Step
Action
Description
User A sends an INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
F3
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. Proxy server forwards
the INVITE message to User B.
180 Ringing—User B to Proxy
User B sends a SIP 180 Ringing response
Server
to the proxy server. The 180 Ringing
response indicates that the user is being
alerted.
F4
180 Ringing—Proxy Server to
The proxy server forwards the 180
User A
Ringing response to User A. User A
hears the ring-back tone indicating that
User B is being alerted.
CANCEL—User A to Proxy
User A sends a SIP CANCEL request to
Server
the proxy server after not receiving an
appropriate response within the time
F5
allocated in the INVITE request. The SIP
CANCEL request indicates that User A
wants to disconnect the call.
F6
CANCEL—Proxy Server to
The proxy server forwards the SIP
CANCEL request to notify User B that
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
F7
Action
Description
User B
User A wants to disconnect the call.
200 OK—User B to Proxy
User B sends a SIP 200 OK response to
Server
the proxy server. The SIP 200 OK
response indicates that User B has
received the CANCEL request.
F8
200 OK—Proxy Server to User
The proxy server forwards the SIP 200
A
OK response to notify User A that the
CANCEL request has been processed
successfully.
The following figure illustrates a successful call setup and call hold. In this scenario, the
two end users are User A and User B. User A and User B are located at Yealink SIP IP
phones.
The call flow scenario is as follows:
438
1.
User A calls User B.
2.
User B answers the call.
Appendix
3.
User A places User B on hold.
User A
Proxy Server
User B
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. 200 OK
F6. 200 OK
F7. ACK
F8. ACK
2-way RTP channel established
F9. INVITE B (sendonly)
F10. INVITE B (sendonly)
F11. 200 OK
F12. 200 OK
F13. ACK
F14. ACK
No RTP packets being sent
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
User A sends an INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 200 OK response to
F5
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies the proxy server that the
connection has been made.
The proxy server forwards the 200 OK
F6
200 OK—Proxy Server to User
message to User A. The 200 OK
A
response notifies User A that the
connection has been made.
440
Appendix
Step
Action
Description
User A sends a SIP ACK to the proxy
F7
ACK—User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the SIP ACK to
F8
ACK—Proxy Server to User B
User B. The ACK confirms that the proxy
server has received the 200 OK
response. The call session is now active.
User A sends a mid-call INVITE request
F9
INVITE—User A to Proxy
to the proxy server with new SDP
Server
session parameters, which are used to
place the call on hold.
F10
INVITE—Proxy Server to User
The proxy server forwards the mid-call
B
INVITE message to User B.
User B sends a SIP 200 OK response to
F11
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the INVITE is
successfully processed.
The proxy server forwards the 200 OK
F12
200 OK—Proxy Server to User
response to User A. The 200 OK
A
response notifies User B is successfully
placed on hold.
User A sends an ACK message to the
proxy server. The ACK confirms that
F13
ACK—User A to Proxy Server
User A has received the 200 OK
response. The call session is now
temporarily inactive. No RTP packets
are being sent.
The proxy server sends the ACK
F14
ACK—Proxy Server to User B
message to User B. The ACK confirms
that the proxy server has received the
200 OK response.
The following figure illustrates a successful call between Yealink SIP IP phones in which
two parties are in a call, one of the participants receives and answers an incoming call
from a third party. In this call flow scenario, the end users are User A, User B, and User C.
They are all using Yealink SIP IP phones, which are connected via an IP network.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The call flow scenario is as follows:
1.
User A calls User B.
2.
User B answers the call.
3.
User C calls User B.
4.
User B accepts the call from User C.
Proxy Server
User A
User C
User B
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. 200 OK
F6. 200 OK
F7. ACK
F8. ACK
2-way RTP channel established
F9. INVITE A
F10. INVITE A
F11. 180 Ringing
F12. 180 Ringing
F13. INVITE B ( sendonly )
F14. INVITE B ( sendonly )
F15. 200 OK
F316 200 OK
F17. ACK
F18. ACK
No RTP Packets being sent
F19. 200 OK
F20. 200 OK
F21. ACK
F22. ACK
2-way RTP channel established
442
Appendix
Step
Action
Description
User A sends an INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 200 OK response to
F5
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies proxy server that the connection
has been made.
The proxy server forwards the 200 OK
F6
200 OK—Proxy Server to User
message to User A. The 200 OK
A
response notifies User A that the
connection has been made.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
User A sends a SIP ACK to the proxy
F7
ACK—User A to Proxy Server
server, The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the SIP ACK to
F8
ACK—Proxy Server to User B
User B. The ACK confirms that the proxy
server has received the 200 OK
response. The call session is now active.
User C sends a SIP INVITE message to
the proxy server. The INVITE request is
an invitation to User A to participate in
a call session.
In the INVITE request:

The IP address of User A is inserted
in the Request-URI field.

User C is identified as the call
session initiator in the From field.
F9
INVITE—User C to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User C is
ready to receive is specified.

The port on which User A is
prepared to receive the RTP data is
specified.
F10
INVITE—Proxy Server to User
A
The proxy server maps the SIP URI in the
To field to User A. The proxy server
sends the INVITE message to User A.
User A sends a SIP 180 Ringing
F11
180 Ringing—User A to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F12
180 Ringing—Proxy Server to
Ringing response to User C. User C
User C
hears the ring-back tone indicating that
User A is being alerted.
444
Appendix
Step
Action
Description
User A sends a mid-call INVITE request
F13
INVITE—User A to Proxy
to the proxy server with new SDP
Server
session parameters, which are used to
place the call on hold.
F14
INVITE—Proxy Server to User
The proxy server forwards the mid-call
B
INVITE message to User B.
User B sends a 200 OK to the proxy
F15
200 OK—User B to Proxy
server. The 200 OK response indicates
Server
that the INVITE was successfully
processed.
The proxy server forwards the 200 OK
F16
200 OK—Proxy Server to User
response to User A. The 200 OK
A
response notifies User B is successfully
placed on hold.
User A sends an ACK message to the
proxy server. The ACK confirms that
F17
ACK—User A to Proxy Server
User A has received the 200 OK
response. The call session is now
temporarily inactive. No RTP packets
are being sent.
The proxy server sends the ACK
F18
ACK—Proxy Server to User B
message to User B. The ACK confirms
that the proxy server has received the
200 OK response.
User A sends a 200 OK response to the
F19
200 OK—User A to Proxy
proxy server. The 200 OK response
Server
notifies that the connection has been
made.
F20
200 OK—Proxy Server User C
The proxy server forwards the 200 OK
message to User C.
User C sends a SIP ACK to the proxy
F21
ACK—User C to Proxy Server
server. The ACK confirms that User C
has received the 200 OK response. The
call session is now active.
The proxy server forwards the SIP ACK
F22
ACK—Proxy Server to User A
to User A to confirm that User C has
received the 200 OK response.
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The following figure illustrates a successful call between Yealink SIP IP phones in which
two parties are in a call and then one of the parties transfers the call to a third party
without consultation. This is called a blind transfer. In this call flow scenario, the end
users are User A, User B, and User C. They are all using Yealink SIP IP phones, which are
connected via an IP network.
The call flow scenario is as follows:
446
1.
User A calls User B.
2.
User B answers the call.
3.
User B transfers the call to User C.
Appendix
4.
User C answers the call.
Call is established between User A and User C.
User A
Proxy Server
User B
User C
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. 200 OK
F6. 200 OK
F7. ACK
F8. ACK
2-way RTP channel established
F9. REFER
F10. 202 Accepted
F11. REFER
F12. 202 Accepted
F17. BYE
F18. BYE
F19. 200 OK
F20. 200 OK
F21. INVITE C
F22. INVITE C
F23. 180 Ringing
F24. 180 Ringing
F25. 200 OK
F26. 200 OK
F27. ACK
F28. ACK
2-way RTP channel established
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Step
Action
Description
User A sends an INVITE message to the
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 200 OK response to
F5
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the 200 OK
F6
200 OK—Proxy Server to User
message to User A. The 200 OK
A
response notifies User A that the
connection has been made.
448
Appendix
Step
Action
Description
User A sends a SIP ACK to the proxy
F7
ACK—User A to Proxy Server
server, The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the SIP ACK to
F8
ACK—Proxy Server to User B
User B. The ACK confirms that the proxy
server has received the 200 OK
response. The call session is now active.
User B sends a REFER message to the
F9
REFER—User B to Proxy Server
proxy server. User B performs a blind
transfer of User A to User C.
The proxy server sends a SIP 202 Accept
F10
202 Accepted—Proxy Server
to User B
response to User B. The 202 Accepted
response notifies User B that the proxy
server has received the REFER
message.
F11
REFER—Proxy Server to User
The proxy server forwards the REFER
A
message to User A.
User A sends a SIP 202 Accept response
F12
202 Accepted—User A to
to the proxy server. The 202 Accepted
Proxy Server
response indicates that User A accepts
the transfer.
User B terminates the call session by
F13
BYE—User B to Proxy Server
sending a SIP BYE request to the proxy
server. The BYE request indicates that
User B wants to release the call.
F14
BYE—Proxy Server to User A
The proxy server forwards the BYE
request to User A.
User A sends a SIP 200 OK response to
F15
200OK—User A to Proxy
the proxy server. The 200 OK response
Server
confirms that User A has received the
BYE request.
F16
200OK—Proxy Server to User
The proxy server forwards the SIP 200
B
OK response to User B.
User A sends a SIP INVITE request to the
F17
INVITE—User A to Proxy
proxy server. In the INVITE request, a
Server
unique Call-ID is generated and the
Contact-URI field indicates that User A
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
requests the call.
F18
INVITE—Proxy Server to User
The proxy server maps the SIP URI in the
C
To field to User C.
User C sends a SIP 180 Ringing
F19
180 Ringing—User C to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F20
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User C is being alerted
User C sends a SIP 200 OK response to
F21
200OK—User C to Proxy
the proxy server. The 200 OK response
Server
notifies the proxy server that the
connection has been made.
F22
200OK—Proxy Server to User
The proxy server forwards the SIP 200
A
OK response to User A.
User A sends a SIP ACK to the proxy
F23
ACK— User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server forwards the ACK
F24
ACK—Proxy Server to User C
message to User C. The ACK confirms
that User A has received the 200 OK
response. The call session is now active.
The following figure illustrates a successful call between Yealink SIP IP phones in which
two parties are in a call and then one of the parties transfers the call to the third party
with consultation. This is called attended transfer. In this call flow scenario, the end users
are User A, User B, and User C. They are all using Yealink SIP IP phones, which are
connected via an IP network.
The call flow scenario is as follows:
450
1.
User A calls User B.
2.
User B answers the call.
3.
User A calls User C.
4.
User C answers the call.
Appendix
5.
User A transfers the call to User C.
Call is established between User B and User C.
User A
Proxy Server
User B
User C
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. 200 OK
F6. 200 OK
F7. ACK
F8. ACK
2-way RTP channel established
F9. INVITE B (sendonly)
F10. INVITE B (sendonly)
F11. 200 OK
F12. 200 OK
F13. ACK
F14. ACK
F15. INVITE C
F16. INVITE C
F17. 180 Ringing
F18. 180 Ringing
F19. 200 OK
F20. 200 OK
F21. ACK
F22. ACK
2-way RTP channel established
F23. REFER
F24. 202 Accepted
F25. REFER
F26. 202 Accepted
F31. BYE
F32. BYE
F33. 200 OK
F34. 200 OK
2-way RTP channel established
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
User A sends an INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 200 OK response to
F5
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the 200 OK
F6
200 OK—Proxy Server to User
message to User A. The 200 OK
A
response notifies User A that the
connection has been made.
452
Appendix
Step
Action
Description
User A sends a SIP ACK to the proxy
F7
ACK—User A to Proxy Server
server, The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the SIP ACK to
F8
ACK—Proxy Server to User B
User B. The ACK confirms that the proxy
server has received the 200 OK
response. The call session is now active.
User A sends a mid-call INVITE request
F9
INVITE—User A to Proxy
to the proxy server with new SDP
Server
session parameters, which are used to
place the call on hold.
F10
INVITE—Proxy Server to User
The proxy server forwards the mid-call
B
INVITE message to User B.
User B sends a SIP 200 OK response to
F11
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the INVITE was
successfully processed.
The proxy server forwards the 200 OK
F12
200 OK—Proxy Server to User
response to User A. The 200 OK
A
response notifies User B is successfully
placed on hold.
User A sends an ACK message to the
proxy server. The ACK confirms that
F13
ACK—User A to Proxy Server
User A has received the 200 OK
response. The call session is now
temporarily inactive. No RTP packets
are being sent.
The proxy server sends the ACK
F14
ACK—Proxy Server to User B
message to User B. The ACK confirms
that the proxy server has received the
200 OK response.
User A sends a SIP INVITE request to the
F15
INVITE—User A to Proxy
Server
proxy server. In the INVITE request, a
unique Call-ID is generated and the
Contact-URI field indicates that User A
requests the call.
F16
INVITE—Proxy Server to User
The proxy server maps the SIP URI in the
To field to User C. The proxy server
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
C
Description
sends the INVITE request to User C.
User C sends a SIP 180 Ringing
F17
180 Ringing—User C to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F18
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User C is being alerted.
User C sends a SIP 200 OK response to
F19
200OK—User C to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the SIP 200
F20
200OK—Proxy Server to User
OK response to User A. The 200 OK
A
response notifies User A that the
connection has been made.
User A sends a SIP ACK to the proxy
F21
ACK— User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server forwards the ACK
message to User C. The ACK confirms
F22
ACK—Proxy Server to User C
that the proxy server has received the
200 OK response. The call session is
now active.
F23
REFER—User A to Proxy
Server
User A sends a REFER message to the
proxy server. User A performs a transfer
of User B to User C.
The proxy server sends a SIP 202
F24
202 Accepted—Proxy Server
to User A
Accepted response to User A. The 202
Accepted response notifies User A that
the proxy server has received the REFER
message.
F25
F26
454
REFER—Proxy Server to User B
The proxy server forwards the REFER
message to User B.
202 Accepted—User B to
User B sends a SIP 202 Accept response
Proxy Server
to the proxy server. The 202 Accepted
Appendix
Step
Action
Description
response indicates that User B accepts
the transfer.
User A terminates the call session by
F27
BYE—User A to Proxy Server
sending a SIP BYE request to the proxy
server. The BYE request indicates that
User A wants to release the call.
F28
BYE—Proxy Server to User B
The proxy server forwards the BYE
request to User B.
User B sends a SIP 200 OK response to
F29
200OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that User B has received
the BYE request.
F30
200OK—Proxy Server to User
The proxy server forwards the SIP 200
A
OK response to User A.
The following figure illustrates successful call forwarding between Yealink SIP IP phones
in which User B has enabled always call forward. The incoming call is immediately
forwarded to User C when User A calls User B. In this call flow scenario, the end users
are User A, User B, and User C. They are all using Yealink SIP IP phones, which are
connected via an IP network.
The call flow scenario is as follows:
1.
User B enables always call forward, and the destination number is User C.
2.
User A calls User B.
3.
User B forwards the incoming call to User C.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
4.
User C answers the call.
Call is established between User A and User C.
User A
Proxy Server
User B
F1. INVITE B
F2. INVITE B
F3. 302 Move Temporarily
F4. ACK
F5. 302 Move Temporarily
F6. ACK
F7. INVITE C
F8. INVITE C
F9. 180 Ringing
F10. 180 Ringing
F11. 200 OK
F12. 200 OK
F13. ACK
F14. ACK
2-way RTP channel established
456
User C
Appendix
Step
Action
Description
User A sends an INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of the User B is
inserted in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 302 Moved
F3
302 Move Temporarily—User
B to Proxy Server
Temporarily message to the proxy
server. The message indicates that User
B is not available at SIP phone B. User B
rewrites the contact-URI.
The proxy server sends a SIP ACK to
F4
ACK—Proxy Server to User B
User B, the ACK message notifies User B
that the proxy server has received the
302 Move Temporarily message.
F5
302 Move Temporarily—Proxy
The proxy server forwards the 302
Server to User A
Moved Temporarily message to User A.
User A sends a SIP ACK to the proxy
F6
ACK—User A to Proxy Server
server. The ACK message notifies the
proxy server that User A has received
the 302 Move Temporarily message.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
User A sends a SIP INVITE request to the
F7
INVITE—User A to Proxy
Server
proxy server. In the INVITE request, a
unique Call-ID is generated and the
Contact-URI field indicates that User A
requested the call.
F8
INVITE—Proxy Server to User
C
The proxy server maps the SIP URI in the
To field to User C. The proxy server
sends the SIP INVITE request to User C.
User C sends a SIP 180 Ringing
F9
180 Ringing—User C to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F10
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User C is being alerted.
User C sends a SIP 200 OK response to
F11
200OK—User C to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the SIP 200
F12
200OK—Proxy Server to User
OK response to User A. The 200 OK
A
response notifies User A that the
connection has been made.
User A sends a SIP ACK to the proxy
F13
ACK—User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server forwards the ACK
message to User C. The ACK confirms
F14
ACK—Proxy Server to User C
that the proxy server has received the
200 OK response. The call session is
now active.
458
Appendix
The following figure illustrates successful call forwarding between Yealink SIP IP phones
in which User B has enabled busy call forward. The incoming call is forwarded to User C
when User B is busy. In this call flow scenario, the end users are User A, User B, and User
C. They are all using Yealink SIP IP phones, which are connected via an IP network.
The call flow scenario is as follows:
1.
User B enables busy call forward, and the destination number is User C.
2.
User A calls User B.
3.
User B is busy.
4.
User B forwards the incoming call to User C.
5.
User C answers the call.
Call is established between User A and User C.
User A
Proxy Server
User B
User C
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. 302 Move Temporarily
F6. ACK
F7. 302 Move Temporarily
F8. ACK
F9. INVITE C
F10. INVITE C
F11. 180 Ringing
F12. 180 Ringing
F13. 200 OK
F14. 200 OK
F15. ACK
F16. ACK
2-way RTP channel established
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
User A sends the INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 302 Moved
F5
302 Move Temporarily—User
B to Proxy Server
Temporarily message to the proxy
server. The message indicates that User
B is not available at SIP phone B. User B
rewrites the contact-URI.
The proxy server sends a SIP ACK to
F6
ACK—Proxy Server to User B
User B, the ACK message notifies User B
that the proxy server has received the
460
Appendix
Step
Action
Description
ACK message.
F7
302 Move Temporarily—Proxy
The proxy server forwards the 302
Server to User A
Moved Temporarily message to User A.
User A sends a SIP ACK to the proxy
F8
ACK—User A to Proxy Server
server. The ACK message notifies the
proxy server that User A has received
the ACK message.
User A sends a SIP INVITE request to the
F9
INVITE—User A to Proxy
Server
proxy server. In the INVITE request, a
unique Call-ID is generated and the
Contact-URI field indicates that User A
requests the call.
F10
INVITE—Proxy Server to User
The proxy server forwards the SIP
C
INVITE request to User C.
User C sends a SIP 180 Ringing
F11
180 Ringing—User C to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F12
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User C is being alerted.
User C sends a SIP 200 OK response to
F13
200OK—User C to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
F14
200OK—Proxy Server to User
The proxy server forwards the SIP 200
A
OK response to User A.
User A sends a SIP ACK to the proxy
F15
ACK— User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
F16
ACK—Proxy Server to User C
The proxy server sends the ACK
message to User C.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
The following figure illustrates successful call forwarding between Yealink SIP IP phones
in which User B has enabled no answer call forward. The incoming call is forwarded to
User C when User B does not answer the incoming call after a period of time. In this call
flow scenario, the end users are User A, User B, and User C. They are all using Yealink
SIP IP phones, which are connected via an IP network.
The call flow scenario is as follows:
1.
User B enables no answer call forward, and the destination number is User C.
2.
User A calls User B.
3.
User B does not answer the incoming call.
4.
User B forwards the incoming call to User C.
5.
User C answers the call.
Call is established between User A and User C.
User A
Proxy Server
User B
F1. INVITE B
F2. INVITE B
F3. 180 Ringing
F4. 180 Ringing
F5. 302 Move Temporarily
F6. ACK
F7. 302 Move Temporarily
F8. ACK
F9. INVITE C
F10. INVITE C
F11. 180 Ringing
F12. 180 Ringing
F13. 200 OK
F14. 200 OK
F15. ACK
F16. ACK
2-way RTP channel established
462
User C
Appendix
Step
Action
Description
User A sends the INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. The proxy server
sends the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 302 Moved
F5
302 Move Temporarily—User
B to Proxy Server
Temporarily message to the proxy
server. The message indicates that User
B is not available at SIP phone B. User B
rewrites the contact-URI.
The proxy server sends a SIP ACK to
F6
ACK—Proxy Server to User B
User B, the ACK message notifies User B
that the proxy server has received the
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
ACK message.
F7
302 Move Temporarily—Proxy
The proxy server forwards the 302
Server to User A
Moved Temporarily message to User A.
User A sends a SIP ACK to the proxy
F8
ACK—User A to Proxy Server
server. The ACK message notifies the
proxy server that User A has received
the ACK message.
User A sends a SIP INVITE request to the
F9
INVITE—User A to Proxy
Server
proxy server. In the INVITE request, a
unique Call-ID is generated and the
Contact-URI field indicates that User A
requests the call.
F10
INVITE—Proxy Server to User
The proxy server forwards the SIP
C
INVITE request to User C.
User C sends a SIP 180 Ringing
F11
180 Ringing—User C to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F12
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User C is being alerted.
User C sends a SIP 200 OK response to
F13
200OK—User C to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the SIP 200
F14
200OK—Proxy Server to User
OK response to User A. The 200 OK
A
response notifies User A that the
connection has been made.
User A sends a SIP ACK to the proxy
F15
ACK— User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the ACK
F16
ACK—Proxy Server to User C
message to User C. The ACK confirms
that the proxy server has received the
200 OK response.
464
Appendix
The following figure illustrates successful 3-way calling between Yealink IP phones in
which User A mixes two RTP channels and therefore establishes a conference between
User B and User C. In this call flow scenario, the end users are User A, User B, and User
C. They are all using Yealink SIP IP phones, which are connected via an IP network.
The call flow scenario is as follows:
1.
User A calls User B.
2.
User B answers the call.
3.
User A places User B on hold.
4.
User A calls User C.
5.
User C answers the call.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
6.
User A mixes the RTP channels and establishes a conference between User B and
User C.
User A
User B
Proxy Server
F1. INVITE B
F4. 180 Ringing
F6. 200 OK
F7. ACK
F2. INVITE B
F3. 180 Ringing
F5. 200 OK
F8. ACK
Session1 established between User A and User B is active
F9. INVITE(sendonly)
Initiate
three party
conference
F10. INVITE (sendonly)
F11. 200 OK
F12. 200 OK
F13. ACK
F14. ACK
Session 1 established between User A and User B is hold
F15. INVITE C
F16. INVITE C
F17. 180 Ringing
F18. 180 Ringing
F20. 200 OK
F19. 200 OK
F21. ACK
F22. ACK
Both calls are active, come into three-party conference
466
User C
Appendix
Step
Action
Description
User A sends the INVITE message to a
proxy server. The INVITE request is an
invitation to User B to participate in a
call session.
In the INVITE request:

The IP address of User B is inserted
in the Request-URI field.

User A is identified as the call
session initiator in the From field.
F1
INVITE—User A to Proxy

Server
A unique numeric identifier is
assigned to the call and is inserted
in the Call-ID field.

The transaction number within a
single call leg is identified in the
CSeq field.

The media capability User A is
ready to receive is specified.

The port on which User B is
prepared to receive the RTP data is
specified.
F2
INVITE—Proxy Server to User
B
The proxy server maps the SIP URI in the
To field to User B. Proxy server forwards
the INVITE message to User B.
User B sends a SIP 180 Ringing response
F3
180 Ringing—User B to Proxy
to the proxy server. The 180 Ringing
Server
response indicates that the user is being
alerted.
The proxy server forwards the 180
F4
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User B is being alerted.
User B sends a SIP 200 OK response to
F5
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the 200 OK
F6
200 OK—Proxy Server to User
message to User A. The 200 OK
A
response notifies User A that the
connection has been made.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Step
Action
Description
User A sends a SIP ACK to the proxy
F7
ACK—User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the SIP ACK to
F8
ACK—Proxy Server to User B
User B. The ACK confirms that the proxy
server has received the 200 OK
response. The call session is now active.
User A sends a mid-call INVITE request
F9
INVITE—User A to Proxy
to the proxy server with new SDP
Server
session parameters, which are used to
place the call on hold.
F10
INVITE—Proxy Server to User
The proxy server forwards the mid-call
B
INVITE message to User B.
User B sends a SIP 200 OK response to
F11
200 OK—User B to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the INVITE is
successfully processed.
The proxy server forwards the 200 OK
F12
200 OK—Proxy Server to User
response to User A. The 200 OK
A
response notifies User A that User B is
successfully placed on hold.
User A sends the ACK message to the
proxy server. The ACK confirms that
F13
ACK—User A to Proxy Server
User A has received the 200 OK
response. The call session is now
temporarily inactive. No RTP packets
are being sent.
The proxy server sends the ACK
F14
ACK—Proxy Server to User B
message to User B. The ACK confirms
that the proxy server has received the
200 OK response.
User A sends a SIP INVITE request to the
F15
INVITE—User A to Proxy
Server
proxy server. In the INVITE request, a
unique Call-ID is generated and the
Contact-URI field indicates that User A
requests the call.
F16
468
INVITE—Proxy Server to User
The proxy server maps the SIP URI in the
To field to User C. The proxy server
Appendix
Step
Action
C
Description
sends the SIP INVITE request to User C.
User C sends a SIP 180 Ringing
F17
180 Ringing—User C to Proxy
response to the proxy server. The 180
Server
Ringing response indicates that the user
is being alerted.
The proxy server forwards the 180
F18
180 Ringing—Proxy Server to
Ringing response to User A. User A
User A
hears the ring-back tone indicating that
User C is being alerted.
User C sends a SIP 200 OK response to
F19
200OK—User C to Proxy
the proxy server. The 200 OK response
Server
notifies User A that the connection has
been made.
The proxy server forwards the SIP 200
F20
200OK—Proxy Server to User
OK response to User A. The 200 OK
A
response notifies User A that the
connection has been made.
User A sends a SIP ACK to the proxy
F21
ACK— User A to Proxy Server
server. The ACK confirms that User A
has received the 200 OK response. The
call session is now active.
The proxy server sends the ACK
F22
ACK—Proxy Server to User C
message to User C. The ACK confirms
that the proxy server has received the
200 OK response.
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
This section provides the sample configuration file necessary to configure the IP phone.
Any line beginning with a pound sign (#) is considered to be a comment, unless the # is
contained within double quotes. For Boolean fields, 0 = disabled, 1 = enabled.
This file contains sample configurations for the <y0000000000xx>.cfg or <MAC>.cfg file.
The parameters included here are examples only. Not all possible parameters are
shown in the sample configuration file. You can configure or comment the values as
required. The settings in the <y0000000000xx>.cfg file will be overridden by settings in
the <MAC>.cfg file.
Sample Configuration File
#!version:1.0.0.1
#Note: This file header cannot be edited or deleted.
#Network Settings
network.internet_port.type =
#Configure the WAN port type; 0-DHCP, 1-PPPoE, 2-Static IP Address.
#If the WAN port type is configured as DHCP, you do not need to set the
#following network parameters.
#If the WAN port type is configured as Static IP Address, configure the
#following parameters.
network.internet_port.ip =
network.internet_port.mask =
network.internet_port.gateway =
network.primary_dns=
network.secondary_dns =
#If the WAN port type is configured as PPPoE, configure the following
#parameters.
network.pppoe.user =
network.pppoe.password =
#Dial Plan Settings
dialplan.area_code.code =
dialplan.area_code.min_len =
dialplan.area_code.max_len =
dialplan.area_code.line_id =
dialplan.block_out.number.1 =
dialplan.block_out.line_id.1 =
dialplan.dialnow.rule.1 =
dialplan.dialnow.line_id.1 =
470
Appendix
phone_setting.dialnow_delay =
dialplan.replace.prefix.1 =
dialplan.replace.replace.1 =
dialplan.replace.line_id.1 =
dialplan.item.1 =
#Time Settings
local_time.time_zone =
local_time.time_zone_name =
local_time.ntp_server1 =
local_time.ntp_server2 =
local_time.interval =
local_time.dhcp_time =
#Use the following parameters to set the time and date manually.
local_time.manual_time_enable =
local_time.date_format =
local_time.time_format =
#Auto DST Settings
local_time.summer_time =
local_time.dst_time_type =
local_time.start_time =
local_time.end_time =
local_time.offset_time =
#Phone Lock
phone_setting.lock =
phone_setting.phone_lock.unlock_pin =
phone_setting.phone_lock.lock_time_out =
#Language
lang.wui =
lang.gui =
#Call Waiting
call_waiting.enable =
call_waiting.tone =
#Auto Redial
auto_redial.enable =
auto_redial.interval =
auto_redial.times =
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
#Call Hold
features.play_hold_tone.enable =
features.play_hold_tone.delay =
sip.rfc2543_hold =
#Hotline
features.hotline_number =
features.hotline_delay =
#Web Server Type
wui.http_enable =
network.port.http =
wui.https_enable =
network.port.https =
#DTMF Suppression
features.dtmf.hide =
features.dtmf.hide_delay =
#Call Forward
# In Phone Mode
features.fwd_mode = 0
forward.always.enable =
forward.always.target =
forward.always.on_code =
forward.always.off_code =
forward.busy.enable =
forward.busy.target =
forward.busy.on_code =
forward.busy.off_code =
forward.no_answer.enable =
forward.no_answer.target =
forward.no_answer.timeout =
forward.no_answer.on_code =
forward.no_answer.off_code =
#In Custom Mode
features.fwd_mode = 1
account.1.always_fwd.enable =
account.1.always_fwd.target =
account.1.always_fwd.on_code =
account.1.busy_fwd.off_code =
account.1.busy_fwd.enable =
account.1.busy_fwd.target =
472
Appendix
account.1.busy_fwd.on_code =
account.1.busy_fwd.off_code =
account.1.timeout_fwd.enable =
account.1.timeout_fwd.target =
account.1.timeout_fwd.timeout =
account.1.timeout_fwd.on_code =
account.1.timeout_fwd.off_code =
#Call Transfer
transfer.semi_attend_tran_enable =
transfer.blind_tran_on_hook_enable =
transfer.on_hook_trans_enable =
transfer.tran_others_after_conf_enable =
#Call Conference
account.1.conf_type =
account.1.conf_uri =
#DTMF
account.1.dtmf.type =
account.1.dtmf.dtmf_payload =
account.1.dtmf.info_type =
#Distinctive Ring Tones
account.1.alert_info_url_enable =
distinctive_ring_tones.alert_info.1.text =
distinctive_ring_tones.alert_info.1.ringer =
#Tones
voice.tone.dial =
voice.tone.ring =
voice.tone.busy =
voice.tone.congestion =
voice.tone.callwaiting =
voice.tone.dialrecall =
voice.tone.info =
voice.tone.stutter =
voice.tone.message =
voice.tone.autoanswer =
#Remote Phone Book
features.remote_phonebook.enable =
features.remote_phonebook.flash_time =
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
#LDAP
ldap.enable =
ldap.name_filter =
ldap.number_filter =
ldap.host =
ldap.port =
ldap.base =
ldap.user =
ldap.password =
ldap.max_hits =
ldap.name_attr =
ldap.numb_attr =
ldap.display_name =
ldap.version =
ldap.call_in_lookup =
ldap.ldap_sort =
#Action URL
action_url.setup_completed =
action_url.registered =
action_url.unregistered =
action_url.register_failed =
action_url.off_hook =
action_url.on_hook =
action_url.incoming_call =
action_url.outgoing_call =
action_url.call_established =
action_url.dnd_on =
action_url.dnd_off =
action_url.always_fwd_on =
action_url.always_fwd_off =
action_url.busy_fwd_on =
action_url.busy_fwd_off =
action_url.no_answer_fwd_on =
action_url.no_answer_fwd_off =
action_url.transfer_call =
action_url.blind_transfer_call =
action_url.attended_transfer_call =
action_url.hold =
action_url.unhold =
action_url.mute =
action_url.unmute =
action_url.missed_call =
action_url.call_terminated =
474
Appendix
action_url.busy_to_idle =
action_url.idle_to_busy =
action_url.ip_change =
action_url.forward_incoming_call =
action_url.reject_incoming_call =
action_url.answer_new_incoming_call =
action_url.transfer_finished =
action_url.transfer_failed =
#Access URL of Resource Files
dialplan_dialnow.url =
dialplan_replace_rule.url =
local_contact.data.url =
remote_phonebook.data.1.url =
directory_setting.url =
super_search.url =
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Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
476
Index
Numeric
C
180 Ring Workaround
90
Call Completion
802.1X Authentication
189
Call Forward
Call Hold
Call Log
A
About This Guide
Acoustic Echo Cancellation
Action URL
163
Action URI
166
Administrator Password
Always Forward
Audio Codecs
201
76
Connect the Network and Power
Connecting the IP phone
Dial-now
Automatic Call Distribution
Backlight
43
Blind Transfer
Block Out
103
37
Busy Forward
Busy Lamp Field
142
Busy Tone Delay
88
211
13
13
32
149
34
Dial-now Template
230
107
Distinctive Ring Tones
131
Do Not Disturb (DND)
84
Documentations
DTMF
v
121
Dual Headset
98
21
42
Directed Call Pickup
B
39
Configuring Security Features
470
131
D
77
Auto Redial
18
Configuring Basic Network Parameters
Creating Dial Plan
103
207
18
Configuring Basic Features
Contrast
13
Attended Transfer
Auto Answer
260
430
36
119
244
Configuring Advanced features
257
422
Attach the Stand
73
Configuration Methods
Appendix F: Sample Configuration File
Area Code
Call Waiting
Configuration Files
255
Appendix E: SIP Call Flows
103
Comfort Noise Generation
82
Appendix C: Configuration Parameters
Appendix D: SIP
Call Transfer
Capturing Packets
255
Appendix B: Time Zones
115
Connected Line Identification Presentation 121
246
81
Appendix A: Glossary
158
Calling Line Identification Presentation
Analyzing the Configuration Files
Appendix
116
Call Return
46
Anonymous Call Rejection
96
Call Recording
205
98
Anonymous Call
98
68
Call Park
v
79
200
E
Early Media
90
Encrypting Configuration Files
219
477
Administrator’s Guide for SIP-T2xP and SIP-T19P IP Phones
Enabling the Watch Dog Feature
245
Music on Hold
148
G
N
Getting Information from Status Indicators 246
NAT Traversal
Getting Started
Network Address Translation (NAT)
13
Group Call Pickup
110
187
Network Conference
187
105
No Answer Forward
98
H
H.323
P
1
Headset Prior
199
Hot Desking
Hotline
Phone Lock
162
48
Phone User Interface
66
18
Physical Features of IP Phones
Power Indicator LED
In This Guide
Index
v
Intercom
16
Quality of Service
196
R
Reading Icons
J
20
Remote Phone Book
Jitter Buffer
208
137
Remote XML Phone Book
Replace Rule
Key as Send
234
33
Replace Rule Template
K
229
Return Message When DND
64
Key Features of IP Phones
10
L
Return Code When Refuse
84
89
RFC and Internet Draft Support
422
S
Language
56
Semi-attended Transfer
139
Live Dialpad
Server Redundancy
73
Session Timer
176
Loading Language Packs
Local Contact File
Local Directory
57
233
94
422
SIP Components
2
426
SIP Request
3
425
SIP Responses
427
SIP Session Description Protocol Usage
Message Waiting Indicator
Multicast Paging
103
169
SIP IP Phone Models
59
M
Missed Call Log
SIP
SIP Header
70
Logo Customization
478
185
126
IPv6 Support
LLDP
1
Q
477
Initialization Process Overview
LDAP
40
Product Overview
I
4
69
153
151
SIP Session Timer
Softkey Layout
93
61
Specifying the Language to Use
58
430
Index
SRTP
217
STUN Server
187
Suppress DTMF Display
124
Summary of Changes
vi
T
Table of Contents
Time and Date
xi
50
Transfer on Conference Hang Up
Transfer via DTMF
Transport Layer Security (TLS)
Troubleshooting
106
125
211
241
Troubleshooting Methods
241
Troubleshooting Solutions
247
TR-069 Device Management
194
U
Upgrading Firmware
225
Use Outbound Proxy in Dialog
User Agent Client (UAC)
2
User Agent Server (UAS)
2
User Password
92
45
V
Verifying Startup
Viewing Log Files
VLAN
17
241
179
Voice Activity Detection
VoIP Principle
VPN
206
1
182
W
Web Server Type
Web User Interface
117
18
479