Voice Software Enhancements for the Cisco 1750 and Cisco 1751

Voice Software Enhancements for the Cisco 1750
and Cisco 1751 Routers
This document describes new voice software configuration information for the Cisco 1750 or
Cisco 1751 routers to support Caller ID and Direct Inward Dialing (DID) (Cisco 1751 router only). For
last-minute updates to this configuration note, refer to the following documentation websites:
•
Cisco 1750 router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1700/1750/index.htm
•
Cisco 1751 router
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_mod/1700/1751/index.htm
This document contains the following sections:
•
Related Documents, page 1
•
Supported Features, page 2
•
Obtaining Documentation, page 11
•
Obtaining Technical Assistance, page 12
Related Documents
The following documents provide additional information about installing and configuring the
Cisco 1700 series routers:
•
Cisco 175x Routers Hardware Installation Guide—provides installation information on the
Cisco 175x routers.
•
Quick Start Guide - Setting up the Cisco 175x Routers—provides quick installation information on
the Cisco 175x routers.
•
Cisco 175x Routers Software Configuration Guide—provides sample networks and router
configurations for the Cisco 175x routers.
•
Cisco WAN Interface Cards Hardware Installation Guide—provides installation information for
Cisco WAN and voice interface cards used in modular routers.
Corporate Headquarters:
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright © 2001. Cisco Systems, Inc. All rights reserved.
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Supported Features
•
Update to Cisco WAN Interface Cards Hardware Installation Guide—provides the latest
information for the Cisco WAN Interface Cards Hardware Installation Guide.
•
Cisco IOS Release 12.1 Configuration Guides and Command References—provides IOS commands
and configurations for your router.
Supported Features
The following features are supported:
•
Caller ID, supported on the Cisco 1750 or Cisco 1751 router
•
Direct Inward Dialing (DID) on VIC 2-DID Port, supported on the Cisco 1751 router
Caller ID
The Caller ID feature provides a method to pass calling number identification and associated directory
information over a VoIP or VoFR network. Typically, the calling party number, and sometimes the name,
appears on a station (also called extension) device, such as a PC telephony software application screen
or the display on a telephone.
This feature has the capability of receiving or sending calling number identification from or to a device
connected to FXS or FXO. These devices can include phones, PBXs, Key Telephone Systems (KTSs),
and the PSTN.
The Caller ID feature supports the sending of calling party information from Foreign Exchange Station
(FXS) loop-start ports into a Caller ID–equipped telephone device. The FXS port emulates the extension
interface of a private-branch exchange (PBX) or the subscriber interface for a central office (CO) switch.
The Caller ID feature supports receiving calling-party information at Foreign Exchange Office
(FXO-M1 and FXO-M2) loop-start ports. The FXO port emulates a connection to a telephone and allows
connection to a PBX extension interface or (where regulations permit) a CO subscriber line.
Prerequisites
The following hardware, software, and basic configurations are required to support the Caller ID feature:
•
Install the required IOS software version on the router.
•
Obtain Caller ID service from your service provider.
•
Establish a working network.
•
Complete your company’s dial plan.
•
Establish a working telephony network based on your company’s dial plan.
•
Install at least one other WAN interface card to provide the connection to the LAN or WAN.
•
Configure your IP, ATM, or Frame Relay network to support real-time voice traffic.
•
Configure voice cards for codec settings.
•
Configure voice dial peers. Each dial peer defines the characteristics associated with a call leg.
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Restrictions
When no dial-peer is provisioned, and if Caller ID information is transmitted from the VIC-2FXO-M1
and VIC-2FXO-M2 cards over VoIP, a null translation rule has to be applied to the voice port. The
following configuration is required:
translation-rule 1
Rule 1 null null
voice-port 0/0
translate calling 1
translate called 1
Configuring Voice Ports to Support Caller ID
Before configuring the Caller ID feature, follow these steps to configure a voice port. Each voice port
must be configured individually.
Not all voice-port commands appear here. Use the reference information in the “Related Documents”
section on page 1 to find out more about voice-port configuration.
Command
Purpose
Step 1
Router> enable
Enter exec mode.
Step 2
Router# configure terminal
Enter global configuration mode.
Step 3
Router(config)# voice-port
slot-number/port-number
Enter voice-port configuration mode on a Cisco 1750 or Cisco 1751
router.
Step 4
Router(config-voiceport)# connection
{plar | tie-line | plar-opx} digits
{trunk digits [answer-mode]}
Specify the voice-port connection type and the destination telephone
number:
•
plar for private line automatic ringdown.
•
tie-line for a tie-line connection to a PBX.
•
plar-opx for PLAR off-premises extension (the local voice port
provides a local response before the remote voice port receives an
answer).
•
trunk for a straight tie-line connection to a PBX.
•
answer-mode if a trunk connection is specified and the router
should not attempt to initiate a trunk connection, but should wait
for an incoming call before establishing the trunk.
•
digits specifies the destination telephone number.
Step 5
Router(config-voiceport)# voice
confirmation-tone
If connection plar or connection plar-opx is configured, enable the
two-beep confirmation tone that a caller hears when picking up the
handset.
Step 6
Router(config-voiceport)# dial-type
{dtmf | pulse}
(FXO ports only.) Select the appropriate dial type for out-dialing.
Step 7
Router(config-voiceport)# signal
{loop-start | ground-start}
Select the appropriate signal type for this interface.
Step 8
Router(config-voiceport)# cptone
locale
Select the appropriate voice call progress tone for this interface. Caller
ID requires this setting. The Caller ID standard (Bellcore/Telcordia,
ETSI, ETSI-DTMF) is determined by this command.
On Cisco 1750 or Cisco 1751 router, the default setting for locale is us.
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Supported Features
Command
Purpose
Step 9
Router(config-voiceport)# ring
frequency {25 | 50}
(Optional. FXS ports only.) Select the appropriate ring frequency (in
Hertz) specific to the equipment attached to this voice port.
Step 10
Router(config-voiceport)# Caller ID
attenuation attenuation
(Optional. FXS ports only.) To specify an attenuation other than the
default of 14 dB (-14 dBm), enter a value of from 0 to 64, in decibels.
Step 11
Router(config-voiceport)# ring
number number
(Optional. FXS ports only.) Specify the maximum number of rings to be
detected before answering a call.
Configuring Caller ID
After configuring the voice port, follow these steps to configure Caller ID on FXS and FXO voice ports:
Step 1
Command
Purpose
Router(config-voiceport)# Caller ID
enable
This command applies to FXS voice ports that send Caller ID
information and to FXO ports that receive it.
By default Caller ID is disabled.
Note
Step 2
Router(config-voiceport)# station
name name
If the station name, station number, or a Caller ID alerting
command is configured on the voice port, these automatically
enable Caller ID, and the Caller ID enable command is not
necessary.
Configure the station name on FXS voice ports connected to user
telephone sets. This sets the Caller ID information for on-net calls
originated by the FXS port. You can also configure the station name on
an FXO port of a router for which incoming Caller ID from the PSTN
subscriber line is expected. In this case, if no Caller ID information is
included on the incoming PSTN call, the call recipient receives the
information configured on the FXO port instead. If the PSTN
subscriber line does provide Caller ID information, this information is
used and the configured station name is ignored.
The name is a character string of 1 to 15 characters identifying the
station.
Note
This command applies only to Caller ID calls, not to
Automatic Number Identification (ANI) calls. ANI supplies
calling number identification only.
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Supported Features
Step 3
Command
Purpose
Router(config-voiceport)# station
number number
Configure the station number on FXS voice ports connected to user
telephone sets. This sets the Caller ID information for on-net calls
originated by the FXS port.
You can also configure the station number on an FXO port of a router
for which incoming Caller ID from the PSTN subscriber line is
expected. In this case, if no Caller ID information is included on the
incoming PSTN call, the call recipient receives the information
configured on the FXO port instead. If the PSTN subscriber line does
provide Caller ID information, this information is used and the
configured station name is ignored.
If the Caller ID station number is not provided either by the incoming
PSTN Caller ID or by the station number configuration, the calling
number included with the on-net routed call is determined by Cisco
IOS software, using a reverse dial-peer search. The number is obtained
by searching for a POTS dial-peer that refers to the voice-port, and the
destination-pattern number from that dial-peer is used.
The number is a string of 1 to 15 characters identifying the station
telephone or extension number.
Step 4
Router(config-voiceport)# Caller ID
block
(FXS ports only.) When this command is configured at the originating
end of a call, it requests that the originating calling party information
not be displayed at the called party’s telephone.
Note
The calling party information is included in the routed on-net
call, as this is often required for other purposes, such as billing
and call blocking. The request to block display of the calling
party information on terminating FXS ports is normally
accepted by Cisco routers, but no guarantee can be made
regarding the treatment by other equipment.
This command affects all calls sent to an FXO station from the
configured FXS station. The central office (CO) may supply a feature
code that a user can dial in order to block Caller ID transmission on a
call-by-call basis.
When a blocked-information call passes through an FXO interface on
the way to its destination, the blocking is passed on to the receiving
party.
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Supported Features
Configuring the Alerting Method for Caller ID
Configuration of the alerting method is required when the Caller ID standard, specified by locale through
the cptone command, is other than Bellcore/Telcordia (if you do not configure the alerting method, the
default Caller ID alerting ring 1 command is applied). The command that you enter is determined by
the Bellcore/Telcordia or ETSI standard that your service provider uses for Caller ID.
Follow these steps to configure the alerting method:
.
Step 1
Command
Purpose
Router(config)# router(config-voiceport)#
Caller ID alerting ring {1 | 2}
Configure this command on FXO ports where Caller ID
information is received from a subscriber telephone line and on
FXS voice ports from which Caller ID information is transmitted
to an attached telephone device.
Compatible settings are required on both ends of the telephone line
connection for Caller ID information to be displayed.
Enter 1 if your telephone line service provider or telephone device
specifies it, to provide or expect Caller ID information following
the first ring at the receiving station. This is the default setting.
Enter 2 to provide or expect Caller ID information during the long
ring pause following two short rings. This setting is used in
Australia and the United Kingdom.
Step 2
Router(config-voiceport)# Caller ID
alerting line-reversal
(FXS ports only.) Configure this setting only when the attached
telephone device requires line polarity reversal to signal the start
of Caller ID information transmission.
Step 3
Router(config-voiceport)# Caller ID
alerting dsp-pre-alloc
(FXO ports, only when Caller ID alerting line-reversal is
required.) Configure this command on the FXO port when the
incoming subscriber telephone line uses line polarity reversal to
signal the start of Caller ID information transmission.
The Cisco FXO interface cannot detect line-reversal alerting in the
on-hook state. For this reason, digital signal processors (DSPs)
must be pre-allocated to serve the Type 1 Caller ID information
when it arrives. Pre-allocating the DSPs enables the DSPs to
continuously monitor for the arrival of Caller ID information.
Step 4
Router(config-voiceport)# Caller ID
alerting pre-ring
(FXS ports only.) Configure this setting only when the attached
telephone device requires the pre-ring (immediate ring) method to
signal the start of a Caller ID information. The command activates
a 250-millisecond (ms) pre-ring.
Configuration Example
The following example shows Caller ID configuration on the FXO, FXS, and DID voice ports:
router-config#voice-port 1/0
station-id name cisco
station-id number 123
Caller ID enable
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Supported Features
Enter the show voice port command to verify that Caller ID is configured on the FXO, FXS, and DID
voice ports:
did_1750a#show voice port 1/0
Foreign Exchange Office M1 1/0 Slot is 0, Sub-unit is 1, Port is 0
Type of VoicePort is FXO
Operation State is DORMANT
Administrative State is UP
The Last Interface Down Failure Cause is Administrative Shutdown
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 8 ms
Playout-delay Mode is set to default
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 200 ms
Playout-delay Minimum mode is set to default, value 4 ms
Playout-delay Fax is set to 300 ms
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 60 s
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 30 s
Companding Type is u-law
Region Tone is set for US
Analog Info Follows:
Currently processing none
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Station name cisco, Station number 123
Caller ID Info Follows:
Standard BELLCORE
Caller ID is received after 1 ring(s)
Voice card specific Info Follows:
Signal Type is loopStart
Number Of Rings is set to 1
Supervisory Disconnect is inactive
Answer Supervision is inactive
Hook Status is On Hook
Ring Detect Status is inactive
Ring Ground Status is inactive
Tip Ground Status is inactive
Dial Type is dtmf
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Pulse Rate Timing is set to 10 pulses/second
InterDigit Pulse Duration Timing is set to 750 ms
Percent Break of Pulse is 60 percent
GuardOut timer is 2000 ms
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Supported Features
DID on VIC-2DID Port
This feature provides Direct Inward Dialing (DID) support on the Cisco 1751 router with the VIC-2DID
hardware.
DID is a service offered by telephone companies that enables callers to dial directly to an extension on
a Private Branch Exchange (PBX) without the assistance of an operator or automated call attendant. This
service makes use of DID trunks, which forward only the last three to five digits of a phone number to
the PBX. If, for example, a company has a PBX with extensions 555-1000 to 555-1999, and a caller dials
555-1234, the local CO would forward 234 to the PBX. The PBX would then ring extension 234. This
entire process is transparent to the caller.
When this feature is configured, a voice-enabled Cisco 1751 router can receive calls from a DID trunk
and connect them to the appropriate extensions.
Restrictions
The DID feature can be configured with the following restrictions:
•
Dial tone is not present on DID voice ports.
•
Outgoing calls are not allowed on DID voice ports. If an outgoing call is attempted, the caller will
get a fast busy signal.
Prerequisites
The following hardware, software, and basic configurations are required to support DID:
•
Install the required IOS software on the router.
•
Obtain DID service from your service provider.
•
Establish a working network.
•
Complete your company’s dial plan.
•
Establish a working telephony network based on your company’s dial plan:
•
Install the VIC-2DID cards. For more information about VIC-2DID cards, see Update to Cisco WAN
Interface Cards Hardware Installation Guide.
•
Install at least one other WAN interface card to provide the connection to the LAN or WAN.
Configuring Voice Ports to Support DID
Follow these steps to configure voice ports for DID. Not all commands required to configure voice ports
appear here. Use the reference information in the “Related Documents” section on page 1 to find out
more about voice-port configuration.
Command
Purpose
Step 1
Router> enable
Enter exec mode.
Step 2
Router# configure terminal
Enter global configuration mode.
Step 3
Router(config)# voice-port
slot/port
Enter voice-port configuration mode on a Cisco 1751 router.
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Supported Features
Step 4
Command
Purpose
Router (config-voiceport)# signal did
{immediate | wink-start | delay-dial}
This command enables DID on the voice port:
•
immediate if the voice port must use the immediate start
protocol
•
wink-start if the voice port must use the wink start protocol
•
delay-dial if the voice port must use the delay start protocol
Step 5
Router(config-voiceport)# timing
wait-wink milliseconds
(Optional; wink-start ports only.) This command sets the maximum
time to wait for wink signaling after an outgoing seizure is sent.
Step 6
Router(config-voiceport)# timing
wink-wait milliseconds
(Optional; wink-start ports only.) This command sets the maximum
time to wait before sending a wink signal after an incoming seizure
is detected.
Step 7
Router(config-voiceport)# timing
wink-duration milliseconds
(Optional; wink-start ports only.) This command sets the duration of
a wink-start signal.
Step 8
Router(config-voiceport)# timing
delay-duration milliseconds
(Optional; delay-dial ports only.) This command sets the duration of
the delay signal.
Step 9
Router(config-voiceport)# timing
delay-start milliseconds
(Optional; delay-dial ports only.) This command sets the delay
interval after an incoming seizure is detected.
Configuration Example
The following sections provide examples of DID configuration in DID mode and FXS mode.
DID Mode
Enter the following voice-port command to enable DID mode (default):
router-config# voice-port 0/0
Router(config-voiceport)# signal did
Enter the show voice port command to verify that the DID card is in DID mode:
did_1751a# show voice port 0/0
Foreign Exchange Station with DID (DID-FXS): 0/0 Slot is 0, Sub-unit is 0, Port is 0
Type of VoicePort is DID-IN
Operation State is DORMANT
Administrative State is UP
No Interface Down Failure
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 8 ms
Playout-delay Mode is set to default
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 200 ms
Playout-delay Minimum mode is set to default, value 4 ms
Playout-delay Fax is set to 300 ms
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Supported Features
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 60 s
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 30 s
Companding Type is u-law
Region Tone is set for US
Analog Info Follows:
Currently processing none
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Station name None, Station number None
Voice card specific Info Follows:
Signal Type is wink-start
Dial Type is dtmf
In Seizure is inactive
Out Seizure is inactive
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
Pulse Rate Timing is set to 10 pulses/second
InterDigit Pulse Duration Timing is set to 750 ms
Clear Wait Duration Timing is set to 400 ms
Wink Wait Duration Timing is set to 200 ms
Wait Wink Duration Timing is set to 550 ms
Wink Duration Timing is set to 200 ms
Delay Start Timing is set to 300 ms
Delay Duration Timing is set to 2000 ms
Dial Pulse Min. Delay is set to 140 ms
Percent Break of Pulse is 60 percent
Auto Cut-through is disabled
Dialout Delay for immediate start is 300 ms
FXS Mode
Enter the following voice-port command to enable FXS mode:
router-config# voice-port 0/0
Router(config-voiceport)# no signal did
Enter the show voice port command to verify that the DID card is in FXS mode:
did_1751a# show voice port 0/0
Foreign Exchange Station with DID (DID-FXS): 0/0 Slot is 0, Sub-unit is 0, Port is 0
Type of VoicePort is FXS VIC-2DID
Operation State is DORMANT
Administrative State is UP
The Last Interface Down Failure Cause is Administrative Shutdown
Description is not set
Noise Regeneration is enabled
Non Linear Processing is enabled
Non Linear Mute is disabled
Non Linear Threshold is -21 dB
Music On Hold Threshold is Set to -38 dBm
In Gain is Set to 0 dB
Out Attenuation is Set to 3 dB
Echo Cancellation is enabled
Echo Cancellation NLP mute is disabled
Echo Cancellation NLP threshold is -21 dB
Echo Cancel Coverage is set to 8 ms
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Obtaining Documentation
Playout-delay Mode is set to default
Playout-delay Nominal is set to 60 ms
Playout-delay Maximum is set to 200 ms
Playout-delay Minimum mode is set to default, value 4 ms
Playout-delay Fax is set to 300 ms
Connection Mode is normal
Connection Number is not set
Initial Time Out is set to 10 s
Interdigit Time Out is set to 10 s
Call Disconnect Time Out is set to 60 s
Ringing Time Out is set to 180 s
Wait Release Time Out is set to 30 s
Companding Type is u-law
Region Tone is set for US
Analog Info Follows:
Currently processing none
Maintenance Mode Set to None (not in mtc mode)
Number of signaling protocol errors are 0
Impedance is set to 600r Ohm
Station name None, Station number None
Voice card specific Info Follows:
Signal Type is loopStart
Ring Frequency is 25 Hz
Hook Status is On Hook
Ring Active Status is inactive
Ring Ground Status is inactive
Tip Ground Status is inactive
Digit Duration Timing is set to 100 ms
InterDigit Duration Timing is set to 100 ms
No disconnect acknowledge
Ring Cadence is defined by CPTone Selection
Ring Cadences are [20 40] * 100 msec
Obtaining Documentation
The following sections provide sources for obtaining documentation from Cisco Systems.
World Wide Web
You can access the most current Cisco documentation on the World Wide Web at the following sites:
•
http://www.cisco.com
•
http://www-china.cisco.com
•
http://www-europe.cisco.com
Documentation CD-ROM
Cisco documentation and additional literature are available in a CD-ROM package, which ships
with your product. The Documentation CD-ROM is updated monthly and may be more current than
printed documentation. The CD-ROM package is available as a single unit or as an annual subscription.
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Ordering Documentation
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•
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•
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•
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•
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•
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