Overview of the Dialogic® IMG 1010 Integrated Media Gateway

Overview of the Dialogic® IMG 1010 Integrated Media Gateway
Integrated Media Gateway
Product Description
Release 10.5.x / 10.3.x
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Technical Support
Technical Support Number: 781-433-9600
Technical Support Fax: 781-449-9520
Industry Standards
This documentation contains many references to ITU-T standards. Originally, the CCITT
made international standards for modulation, data transfer, and data compression
protocols. The CCITT later became the ITU-T, or International Telecommunications
Union Telecommunication Standardization Sector. CCITT standards are synonymous
with ITU-T standards. For more details on these standards, go to www.itu.org.
This documentation also refers to American National Standards Institute (ANSI)
standards. ANSI administers and coordinates the U.S. voluntary standardization and
conformity assessment system for the telecommunications industry. More details on these
standards may be viewed at www.ansi.org.
Related Training
Dialogic offers a variety of training courses for the IMG 1010 Integrated Media Gateway
and IMG 1004 Integrated Media Gateway. Instructors present a comprehensive
description of hardware and software components and their interaction. Laboratory
sessions provide hands-on experience for developing efficient, robust telecommunication.
For information, call 1-508-862-3000 and ask for a Training representative.
Contacting Technical Support for Hardware Failures
To expedite the process of returning defective hardware, please provide the serial number
of the IMG and a shipping address.
Technical Support will investigate to determine whether the IMG may be defective, or if
it is instead exhibiting a software issue that can be confused as a hardware problem. An
example of an indication of a hardware defect would be an LED that fails to display any
status.
Recommendations for System Supportability
The following are key elements we have identified across our customer base that have
made them successful in their development and deployment of solutions incorporating
Dialogic® products. We are passing these onto you as suggestions to consider when
designing and building solutions. Not all of these suggestions are appropriate for all
customers, but we hope you consider them carefully.
If Your Solution Requires High Availability:
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Order redundant configurations
Purchase onsite spares
Follow the limitations for power and configurations as noted in the Dialogic®
Product Documentation
Have your developers and technicians trained on the Dialogic® IMG 1010
Integrated Media Gateway
Have your developers and technicians trained on the Dialogic® IMG 1004
Integrated Media Gateway
Enable Logging in your application so that problems can be diagnosed and
corrected
Develop test scripts, environments, and systems that best simulate the
environment of intended use for each release and each fix you deliver to your
customers
Implement Software Configuration Management to track every revision and
change that you release to your customers
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Review your call flows and APIs with Dialogic Technical Support to identify
opportunities to optimize your solution with regard to our product capabilities
Purchase a support agreement from Dialogic
If you are running a network with Dialogic® Products in them, in addition to the above
suggestions, also:
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Have backup systems for power
Review your network design with Dialogic Technical Support to identify
opportunities to optimize your solution with respect to our product capabilities
Design your network to allow for alternative routes and logical assignments to
more quickly address any service affecting issues.
Control your system environment and configuration changes
Plan your network management and monitoring strategy
Ensure that your technicians are trained in all network elements and interfaces
Monitor your network every day, around the clock.
Have the ability to get someone to every site without delay
Have a complete list of contact information for the support arm of each network
element you deploy
Provide for supplier remote access if required to diagnose and resolve an issue
All of us at Dialogic want you, our valued customer, to be successful. For additional
information regarding our support services and how we can work more closely together
for our mutual success, contact us at our support website at
http://www.cantata.com/support or contact a sales representative at sales@cantata.com.
Table Of Contents
Overview of the Dialogic® IMG 1010 Integrated Media Gateway ........................... 1
Example IMG 1010 Network ............................................................................ 3
IMG 1010 Specifications.................................................................................. 5
An Overview of VoIP on the IMG ...................................................................... 7
Overview ................................................................................................... 7
Integrated Media Resources.......................................................................... 7
Summary of VoIP Features ........................................................................... 7
Supported Codecs .......................................................................................... 9
Overview ................................................................................................... 9
Codec Descriptions ...................................................................................... 9
Host Flags .................................................................................................12
An Overview of SIP .......................................................................................13
SIP on the IMG ..........................................................................................13
SIP Features ................................................................................................15
Basic Support ............................................................................................15
Supported Methods ....................................................................................15
SIP Extensions ...........................................................................................16
Routing/Call Handling .................................................................................16
Media .......................................................................................................16
Interworking..............................................................................................17
An Overview of H.323 on the IMG ...................................................................19
SS7 Features................................................................................................21
An Overview of ISDN on the IMG.....................................................................23
National ISDN PRI NI 2 ...............................................................................23
An Overview of RADIUS on the IMG .................................................................25
Overview ..................................................................................................25
Specifications ............................................................................................25
Formats ....................................................................................................25
Scenarios ..................................................................................................25
RADIUS Server Redundancy.........................................................................26
Supported Packet Types ..............................................................................26
RADIUS Server Debug Mode ........................................................................26
RADIUS Server Failure Alarm .......................................................................26
An Overview of ClientView..............................................................................29
Main ClientView Window: ............................................................................29
Panes .......................................................................................................31
Using ClientView ...........................................................................................33
Logging in to ClientView ..............................................................................33
Creating a Configuration File ........................................................................33
Opening a Saved File ..................................................................................34
Saving a Config File through a Software Upgrade ............................................34
Committing an Object .................................................................................34
ClientView Tips ..........................................................................................34
The ClientView Main Window ..........................................................................37
Panes .......................................................................................................37
ClientView Menus ..........................................................................................39
An Overview of Provisioning the IMG................................................................43
Before You Begin........................................................................................43
Methods....................................................................................................43
Provisioning Tasks ......................................................................................43
ix
Product Description
Monitoring the IMG .......................................................................................45
Using ClientView ........................................................................................45
EventView .................................................................................................45
Using SNMP...............................................................................................45
Using the Multi Router Traffic Grapher (MRTG) Tool.........................................45
Cacti Watcher Function (10.5.0) ...................................................................45
An Overview of Troubleshooting ......................................................................47
Using Telnet ..............................................................................................47
Logs .........................................................................................................47
Call Tracing ...............................................................................................47
Call Statistics.............................................................................................47
Remote Desktop ........................................................................................47
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Overview of the Dialogic® IMG 1010 Integrated Media
Gateway
Topic Location: Introduction
Introduction
The IMG 1010 is a unique carrier-grade VoIP gateway solution that offers customer’s
significant capital and operational savings while simultaneously speeding time to
market. The IMG is unique in its ability to serve as an SS7 signaling server and
media gateway with media processing capability all in one. With up to 768 channels
in a 1U footprint that can be racked and stacked plus software licensing for costeffective in-service growth, the IMG 1010 is the solution for a wide variety service
providers’ media gateway needs.
Service providers can use the IMG 1010 to quickly and cost-effectively add new VoIP
capacity while enabling long term migration to an all-VoIP environment. Service
providers can rapidly provision and maintain a network of IMG 1010s using the
GateControl EMS, a centralized management application with a user-friendly GUI for
provisioning, monitoring and maintenance.
Routing and translations on the IMG 1010 are significantly more robust than what
many Service providers are used to finding in a VoIP gateway. The IMG 1010 comes
with Dialogic's patented Programmable Protocol Language for rapidly developing
PSTN and IP network signaling variants. This unique capability allows IMG 1010
customers to implement advanced and proprietary SIP interoperability features on
their own.
Where Flexibility Meets Performance
Dialogic’s Integrated Media Gateway (IMG) 1010 is a powerful, efficient, carriergrade VoIP media gateway that performs two-way protocol conversion between
circuit-switched networks like the Public Switched Telephone Network (PSTN) and
packet-switched networks like the Internet. This VoIP media gateway provides
service providers and enterprises with unparalleled price performance, reliability, and
flexibility. The Integrated Media Gateway reduces the cost and complexity of
implementing new services by combining PSTN and packet signaling, SS7 continuity
tests, and media (tones and announcements) in a cost-effective, easy-to-manage,
compact (1u) shelf.
Flexibility and Interoperability
You can use the Integrated Media Gateway as a VoIP Gateway, VoIP Transcoder, or
back-to-back SIP User Agent. The IMG 1010 ensures interoperability with a wide
range of VoIP networks by simultaneously supporting Primary Rate Interface (PRI)
and SS7, plus the packet network protocols SIP and H.323. You can implement
protocol changes yourself quickly and efficiently, using Dialogic's patented
Programmable Protocol Language (PPL). The Integrated Media Gateway supports
advanced media capabilities without impacting VoIP channel processing. The IMG has
undergone successful inter-operability testing with a wide spectrum of both VoIP and
PSTN gateways.
Reduced Capital Expenses, Faster Time to Market
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Product Description
This VoIP media gateway lowers initial cost because it supports full interoperability
between ISDN, SS7, SIP, and H.323 across multiple gateways. So you can roll out
new enhanced telecommunication offerings without buying, integrating, or managing
third party softswitches, signaling gateways, application servers, FAX servers, media
servers, proxy servers, or registration servers. While the Integrated Media Gateway
can be configured for cost-effective entry-level requirements, it also allows you to
seamlessly scale and gracefully upgrade your networks. And by using a single
platform to provide rich application services across multiple networks, you
significantly reduce the time, effort, and expense required to develop and deploy
new services.
Reduced Operational Expenses
The Integrated Media Gateway 1010 also directly lowers your ongoing expenses.
With signaling and media supported in a single platform, the cost and complexity of
implementing new services is reduced, as are training, sparing, OAM&P,
environmental, service agreement, and other costs that increase each time a new
platform is deployed. And because the Integrated Media Gateway 1010 supports up
to 768 channels in a 1U footprint, it can reduce rack space costs by up to 50%.
Carrier-Grade Reliability
"Carrier-grade" means more than having a hot-swappable fan tray. It means having
1+1 hot standby support for all active components. It means the ability to upgrade
systems while they are in service. It means separating transport, signaling, and
OAM&P to reduce susceptibility to intruders and to ensure better system
performance.
Improved Network Performance
By integrating multiple network functions into the gateway, the Integrated Media
Gateway 1010 improves network performance. It eliminates call hand-offs and redirection from box to box, improving call setup time and accelerating cost-effective
integration of enhanced services.
Investment Protection
Dialogic has a long history of ensuring compatibility between existing systems and
new offerings, without “forklift” upgrades. Whether service providers are concerned
with new network protocols, new service offerings, or powerful new chip
technologies, they can be sure that the Dialogic equipment they invest in today will
be economically viable for many years to come.
With the IMGs compact package, integrated SS7, and rich media processing
capabilities, you can improve call quality while reducing your costs. New services,
improved flexibility, investment protection, and higher quality, all at a lower cost and
greater efficiency. Dialogic's Integrated Media Gateway 1010 is the gateway platform
of choice for service providers and enterprises worldwide.
Dialogic Corporation - IMG Printable WebHelp
2
Example IMG 1010 Network
Topic Location: Introduction
In the example shown below, a wholesale carrier has POPs (Points of Presence) in
Los Angeles, New York, and Miami.
New York is the Main POP, which houses the NOC (Network Operations Center) and
IMG server.
The network has two separate SS7 connections, an F-link in Los Angeles to the ILEC
and an A-link to Illuminet in New York, which allows them to connect to carriers out
of New York and Miami with one point code.
The role of the IMG Gateway Controller is to manage all of these connections and
allow SS7 calls that come into Miami to be serviced over the New York signaling
links. The IMG Gateway Controller will have routing information stored in all of the
nodes that will allow calls to be routed between cities seamlessly.
Dialogic Corporation - IMG Printable WebHelp
3
IMG 1010 Specifications
Topic Location: Introduction to the IMG 1010
The IMG supports the following:
Telephony Interfaces
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Voice or Signaling
• 32 T1 or 24 E1 I/O
• DS3 + 4 T1 I/O
Signaling/Timing - 4 E1/T1
SS7 ISUP - worldwide variants
ISDN- NI2, Euro ISDN, 5ESS, DMS.
CAS
VoIP Interfaces
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2 Fast Ethernet for Application Control (Gate Control EMS)
2 Fast Ethernet for Network Signaling
2 GIG-E for IP Bearer Traffic
IP Signaling
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H.323
SIP
TDM Signaling
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SS7 ISUP
ISDN
CAS
Routing
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Call routing and translation based on ANI, DNIS, and Nature Of Address, Time
of Day, Day of Week/Year
Pre- and post-routing digit translations
Multiple routing algorithms per trunk group or groups of trunks for IP to TDM
and IP to IP with a- law and µ-law conversions
Pre-call announcement (Branding)
Media Processing
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On-board DSP resources for announcement and tones across IP and TDM
Play messages to users of a particular network indicating call progress. These
are currently statically mapped in the release cause code table and can not be
configured
Interworking
The IMG supports interworking between SIP/H.323/SS7/ISDN.
Customizable Variants
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Product Description
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Dialogic can rapidly customize IP and TDM variants for you using our patented
Programmable Protocol Language tool.
OAM&P
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Centralized Element Management System. See Introduction to the Element
Management System.
Monitoring and provisioning up to 32 IMGs
SNMP: MIB-2, Interface, Alarms, DS0, DS1, and DS3
MRTG
ClientView
Centralized routing engine simultaneously configures all gateways in the
network
Radius (billing, authentication, prepaid)
Local time zone support
User Management
You can administer user passwords and privileges with the AdminView utility.
RADIUS
The IMG uses Remote Authentication Dial In User Service (RADIUS) protocol for
streaming the Call Detail Records (CDR). The implementation is compliant with RFC
2865 and RFC 2866. The RADIUS messages are sent to external RADIUS servers.
Redundancy
The IMG supports redundancy for the following:
• Network Management (Control)
• Data
• SS7 Signaling
Power Requirements
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-48V DC with voltage range (-40V to -60V)
100-240V AC 50/60 Hz with voltage range (90V to 260V)
Power consumption: 90 Watts
Physical Specifications
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1.72" h (43.7 mm) x 17.25" w (438.2mm) x 19.00" d (482.6mm)
wt: 18 lbs (8.1kg)
Dialogic Corporation - IMG Printable WebHelp
6
An Overview of VoIP on the IMG
Topic Location: Product Description > VoIP
Overview
The IMG will perform a two-way conversion between circuit-switched data (TDM) and
packet-switched data (VoIP). A conversion is required when going from circuit
switched data (TDM) to packetized voice applications such as the Voice over Internet
Protocol (VoIP). Circuit-switched voice is converted to IP packets using compression
algorithms that can increase capacity toward the IP network side. The IMG can also
integrate media resources over IP technology. One of the benefits to the IMG is that
it supports modifying the parameters of an individual call while the call is active. This
is needed to be able to change the quality of service at any instant without losing the
call.
Integrated Media Resources
Integrating media resources using IP technology provides many advantages.
Typically media resources are connected by T1, E1, or J1 interfaces that consume
one 64 Kbps port per call. This limits the capacity of the system. The IMG integrates
media resources over IP using the standards-based Real-Time Protocol (RTP).
Integrating media resources using standards-based technology allows media
resources to be shared between the IMG and other network infrastructure. Packet
switching to media resources allows the application to benefit from voice
compression and increasing capacity on the application. This flexibility allows the
IMG and the applications to scale independently and incrementally as needed which
eliminates excess hardware.
Summary of VoIP Features
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Supports SIP RFC 3261
Supports SIP RFC 3581
Supports H.323 V2
Supports up to 512 VoIP resources. (Depending on configuration)
Supports IP Bearer Profiles with multiple IP Profile entries (7 per IP Bearer
Profile)
Supports Integrated Media Resources
Supports the following codecs as listed in Codecs
Supports Q.1912.5 Support for SIP --> ISUP
Supports having Vocoder Data in the CDR of the Radius message
Supports Reason Headers in both TDM to SIP as well as SIP to TDM (RFC
3326)
Supports SIP Privacy for SS7 to SIP, SIP to SS7, ISDN to SIP, SIP to ISDN,
SIP to SIP, and ANSI SS7 to SIP.
Supports Fax. See Fax Support
Supports G3 Fax Relay that is compliant with the T.38 ASN.1 standard Group
32.4 – 14.4 kbps, T.38 compliant fax relay or switch to PCM (synchronized
with SIP or H.323). See Fax Relay
Supports Modems up to V.92 rates, automatic switch to PCM
Supports switching between Voice/Fax/Data and is synchronized with SIP or
H.323
Supports Echo Cancellation
G.168-2000 Compliant; Maximum tail:
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Product Description
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VoIP Module SLM-IPM-1001R - 128 milliseconds (Mindspeed Modules)
VoIP Module SLM-IPM-0001 - 64 milliseconds. (Older BroadCom
Modules)
Supports Ping Capabilities
Supports Jitter Buffer
Supports Symmetric NAT Traversal. See the following link: Symmetric NAT
Traversal
Supports Transcoding between IP network codecs. See the following link:
Transcoding
Dialogic Corporation - IMG Printable WebHelp
8
Supported Codecs
Topic Location: Product Description > VoIP
Overview
In ClientView under the IP Bearer Profiles Object New Vocoder Entries can be
defined. Each of these entries can have a different codec configured. Attributes such
as payload type and size (preferred, minimum, and maximum) can be configured.
When there are multiple vocoder entries configured under the IP Bearer Profile object
a priority order can be configured that is used in the H.245 Terminal Capability
Exchange for codec negotiation with other network elements.
The IMG supports the following codecs: See Table Below
CODEC
G.711 alaw/ulaw
G.723 5.3 kbps
G.723 6.3 kbps
G.729
G.729E/G (10.3.2 ER2
and above)
T.38
iLBC 20 ms
iLBC 30 ms
AMR
EVRC
G.726-32/G.721 Static
Payload
G.726-32/G.721 Dynamic
Payload
GSM-FR Static Payload
GSM-FR Dynamic Payload
SIP
Yes
Yes
Yes
Yes
Yes
H.323
Yes
Yes
Yes
Yes
Not Supported
Yes
Yes
Yes
Yes
Yes
Yes
Not
Not
Not
Not
Yes
Yes
Supported
Supported
Supported
Supported
Yes
Not Supported
Yes
Yes
Not Supported
Not Supported
Codec Descriptions
G.711
• International standard for encoding telephone audio on an 64 kbps channel.
• It is a pulse code modulation (PCM) scheme
• Two different variants: A-law and mu-law. A-law is the standard for
international circuits.
• Always used for Fax or Modem Bypass modes (A-law or u-law allowed)
G.723
• Designed for video conferencing / telephony over standard phone lines, and is
optimized for realtime encode and decode.
• Part of the H.323 standards for video conferencing.
G.726-32/G.721
• G.726-32 is a speech codec used in both a-law and u-law variants
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Product Description
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Uses ADPM (Adaptive Differential Pulse Code Modulation) to allow for
reduction of bandwidth
Converts 64 kb/sec a-law or u-law PCM Channel to a 32kb/sec which is about
half the rate of G.721
Primarily used in international trunks
Standard Codec used for DECT wireless phone systems
Can be negotiated as a Static or Dynamic Payload type
Uses Profile 6 or Profile 7
G.729
• 8 Kbps encoded bit stream rate
• Discontinuous transmission support (DTX) using Voice Activity Detection
(VAD) and Comfort Noise Generation (CNG)
• G.729A and G.729A/B supported.
G.729 Annex B Support
There is a drop down menu where the user can decide whether annexb will be used.
The choices are annexb=no, annexb=yes, or annexb=Not Used. AnnexB is currently
supported only in G.729. When configuring the G.729 codec in ClientView the annexb
field is defaulted to "Yes". See Below for more information. This feature is configured
using the Vocoder Entry pane.
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If the user selects "No" in the drop down menu then the media attribute
"annexb=no" is sent by the IMG in the SDP portion of the SIP message when
enforcing the use of the G.729 payload type.
If the user selects "Yes" in the drop down menu then the annexb message will
not be displayed in the SDP portion of the SIP message. This value is implied
when unspecified in the SDP.
If G.729 Codec is not being used then ClientView will disable the AnnexB
support field.
G.729 E/G (10.3.2 ER 2 and above)
• SIP Only
• Codec defined by the ITU RFCs 3551 & 3555
• Provides increased voice quality
• Uses dynamic payload types (96-127 range), which must be agreed on by
both endpoints of a call (using SIP/SDP).
• G.729E is a higher rate version of G.729 designed to provide higher quality
for background noise conditions, music, and tandems. This mode is better for
music, and it has greater complexity than the original G.729 coders
• Mandating a codec in this range provides high quality, low-bandwidth
performance for on-net calls and ensures the highest possible performance
for applications such as IVR systems. In addition, it provides superior
background noise handling, as well as medium quality music carriage.
• Available in 10, 20 or 30 ms payload sizes
• Supports all attributes that G.729 supports (silence suppression, RTP
redundancy, etc.)
• Annex G defines the silence suppression characteristics (VAD/CNG) for
G.729E. G.729E and G.729E/G are essentially the same.
• According to RFC 3555 (defines MIME support for codecs), the “annexB”
parameter can be used to enable/disable silence suppression in IP signaling
negotiation.
10
Supported Codecs
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An example of the media representation in SDP for describing G.729E/G
might be:
m=audio 5104 RTP/AVP 96
a=rtpmap:96 G729E/8000
a=fmtp:96 annexb=no
a=ptime:30
a=maxptime:60
iLBC (internet Low Bitrate Codec)
• SIP Only
• Defined by RFC 3591 and RFC 3592
• Available in 13.3 kbps (30 ms encoding frame length) or 15.2 kbps (20 ms
encoding frame length) versions
• Uses dynamic payload types (96-127 range), which must be agreed on by
both endpoints of a call.
• Designed for narrow band speech (64kbps).
• Decoding algorithm does not depend on previous packets, therefore it is
excellent at handling packet loss.
• Mandatory codec required for the released CableLabs PacketCableTM 1.1
audio/video codec specification for multimedia terminal adapters (MTAs) and
media gateways.
EVRC
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(Enhanced Variable Rate Codec)
SIP Only
Requires Dialogic license.
Defined by RFC 3558.
A CDMA codec defined by 3GPP2.
Used in millions of CDMA handsets.
Sent in 20 ms output frames of 3 different sizes: Rate 1, Rate ½ or Rate 1/8.
Output frame rate is chosen based on analysis of input frames (dynamically).
Two payload modes: header-free and interleaved (only header-free in current
release).
Silence suppression supported internally (not configurable).
Uses dynamic payload types (96-127 range)
GSM-AMR (Global System for Mobile - Adaptive Multi-Rate)
• Requires Dialogic licensing.
• AMR codecs (narrow and wide band) originally defined by ETSI for GSM.
• Only AMR-NB supported in current IMG release.
• Mandatory codec for 3G cellular systems.
• Uses dynamic payload types (96-127 range)
• Supports eight narrow-band speech encoding modes with bit rates between
4.75 and 12.2 kbps. These rates can be adjusted dynamically during a
session.
• Speech encoding performed in 20 ms frames.
• Multiple 20 ms frames can be encapsulated into a packet (maxptime in SDP
defines max frames per packet).
• Reception of multiple frames in a packet allowed, but only one frame per
packet will be transmitted.
• 12.2 kbps version of AMR-NB is defined by the GSM-EFR standard.
• 7.4 kbps version of AMR-NB is defined by the IS-641 codec in TDMA.
• 6.7 kbps version of AMR-NB is defined by the PDC-EFR standard.
• Silence suppression supported internally (not configurable).
11
Product Description
GSM-FR
• Conforms to GSM 06.10 Specifications
• Used in GSM Digital Mobile Phone Network.
• Can be negotiated as a Static or Dynamic Payload type
• Supported only on the Mindspeed VoIP modules
• Channel density is limited to 84 channels per Picasso device
• Uses Profile 6 or 7
Host Flags
The host flag in the dhcpd.conf file located in /etc must be given a numerical value.
This value is calculated by using certain attributes such as T1/E1, SD Card/FTP
Server and Codecs being used. See the following links below as to how to calculate
the correct hostflag value for your particular network.
See:
Setting Host Flags
Editing the DHCP Conf File.
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An Overview of SIP
Topic Location: Product Description > SIP > Overview
SIP on the IMG
The following diagram shows an example of the IMG in a SIP network.
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13
SIP Features
You are here: Product Description > SIP > Overview
Basic Support
Supported Methods
SIP Extensions
Routing/Call Handling
Media
Interworking
Basic Support
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SIP (Session Initiation Protocol), based on RFC 3261
SIP RFC 3581
Backward compatible with entities running RFC 2543
SDP (Session Description Protocol) based on RFC 2327 and RFC 3551
Interworking with H.323, ISDN, SS7, and SIP
• Q.1912.5 Support for SIP to ISUP Interworking
Authentication and Outbound Registration (IMG can register with other
entities). The IMG does not support inbound registration, since it is not
applicable for Media Gateways.
Call Release Data in the Radius CDR
Vocoder Data in the Radius CDR
The IMG acts as a User Agent (UA) and can inter-operate with SIP proxies.
The IMG can act as a UAC (User Agent Client) or a UAS (User Agent Server).
3xx Redirection (e.g. 302 Moved Temporarily). Also see Supported 3xx
Redirect Responses.
Transcoding via SIP
Transmission Control Protocol (TCP) Transport layer (single or multi-socket)
Call Hold
Session Timer
Early Media (supporting 180/183 Session Progress)
Reliable User Datagram Protocol (UDP) transport, with retransmissions
Supported Response Messages 1xx, 2xx, 3xx, 4xx, 5xx, 6xx
SIP Profiles
A SIP Profile allows you to easily assign a number of SIP features to a
Physical IMG. You create a SIP Profile and then assign profiles to a
gateway in the External Gateway pane.
Support of RFC 3666's Call Flows -- SIP to PSTN Dialing
Vocoder DATA in the CDR
Supported Methods
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INVITE
INFO
SUBSCRIBE/NOTIFY
UPDATE
OPTIONS
REGISTER (Outbound)
CANCEL
BYE
PRACK reliable provisional responses
15
Product Description
SIP Extensions
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SIP Diversion Header
SIP Reason Header (SIP to TDM and TDM to SIP)
SIP Privacy Headers
Network asserted identity and privacy
Session Timer
SIP 3rd Party Call Control (3PCC)
Non-Standard Tags in From/To Header
Non-Standard Tags in R-URI
Routing/Call Handling
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ENUM
SIP-Based Load Balancing/Virtual IP Address
SIP Trunk Group Selection
SIP Proxy Handling
SIP Redirect Server Support and 3xx responses
This feature allows the IMG to respond to the 3XX class of SIP
messages returned from a redirect server.
DNS (Domain Name Server) Lookup
The IMG can route SIP traffic to a remote entity based on the IP
Address or the Host Name. The IMG supports having multiple DNS
servers for redundancy and reliability purposes. See DNS Server and
DNS Client panes.
Re-origination
This feature allows you to limit the number of INVITE re-transmission
attempts (1-5 attempts). The number configured supersedes the
standard # of re-transmissions specified in RFC3261 (which is based
on timers T1 and T2. The default is Re-transmit All. You enable this
feature in the SIP Profile.
SIP 3rd Party Call Control (3PCC)
SIP Gateway Busy Out
The IMG can monitor the status of external SIP gateways by sending
periodic SIP OPTIONS messages. If the gateway does not respond in a
configured amount of time the IMG will mark the gateway as down and
attempt to re-route the call to a different gateway. See SIP Busy Out.
Remote party ID
DTMF out-of-band transfer using INFO and SUBSCRIBE/NOTIFY
Representing trunk groups in SIP Uniform Resource Identifiers (URIs)
SIP PRACK in 1xx messages
Media
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16
Symmetric NAT Traversal
Relay for Dual Tone Multi Frequency (DTMF) digits, including payload type
negotiation (RFC 2833)
SIP Codec Negotiation Priority Selection
T.38 Real Time Fax using SIP
SIP Features
Note: If the remote side includes the fax maximum rate parameter in
the SDP body of the INVITE message, the gateway returns the same
rate in the response SDP.
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Modem Support
Gain Control on SIP Channel Groups
Call Hold
G.729 AnnexB Selection
GSM Support for SIP
G.726 Support for SIP
Interworking
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Interworking with H.323, ISDN, and SS7
SS7 to SIP Calling Party Category (CPC)
ITX (SPIROU) Support
ANSI ISUP Originating Line Info Support
SIP Carrier Identification Code
SIP-T
Network asserted identity and privacy
Customizable SIP-to-SS7 ISUP Cause Codes
Support of RFC 3666 Call Flows - SIP to PSTN Dialing
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An Overview of H.323 on the IMG
Topic Location: Product Description > H.323
The IMG supports Version 2 of ITU H.323, including:
Basic Support
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H.225 Call Signaling Protocol (Q.931 embedded)
H.245 Control Protocol
Registration, Admission, and Status (RAS)
Keep Alive Timer
Real-time Transport Protocol/Real-time Transport Control Protocol (RTP/RTCP)
Out-of-band DTMF signaling via H.245 and RFC2833
Cisco Interoperability
FastStart
Media
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IP Bearer Profiles
T.38 Fax, Fax Bypass, Modem Bypass
Codecs: G.711 (Uncompressed), G.723.1 (Compressed), G.729
(Compressed), G.726 (Dynamic and Static), iBLC
DTMF transmission supported via DTMF tones using G.711, or out via RFC
2833 or H.245 UII signals.
Codec negotiation on both incoming and outgoing calls including the ability to
limit the codecs that are allowed
Interworking
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Cause
Cause
H.246
H.245
code mapping to SS7 ISUP
code mapping of H.225 release reasons to Q.931 cause codes using
interworking specification
tunneling - H.245 data is sent with the H.225 message
Routing
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Simultaneous gateway and gatekeeper routed calls
Gatekeeper Support: 1 active gatekeeper and six alternate, auto-discovery,
aliases for E.164, URL, and email.
Symmetric NAT Traversal
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SS7 Features
Topic Location: Product Description > SS7
Related Topics:
ISUP Variants
The ISUP variant in selected in the SS7 Stack pane from ClientView. Below is a list of
variants the IMG supports.
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ANSI
97
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ITU 97
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ETSI
V1
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China
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ANSI
95
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ITU 93
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ETSI
V2
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JT-ISUP
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ANSI
92
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CCITT 88
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ETSI
V3
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Custom
Variants
Misc
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Forward Call Indicators (FCI) Override
Forward Call Indicators contain information relating to the
characteristics of the connection, signaling path and called party sent
in the forward direction. This is a mandatory parameter in IAM
messages, which is used in countries that offer CUG (closed user
group) service. Using the FCI Override pane, you can configure the
IMG to send or ignore various indicators. See Configuring FCI
Override.
Backward Call Indicators (BCI) Override
Location Override
Circuit Query Message
You can send a Circuit Query Message (CQM) on a CIC or a group of
CICs using the Circuit Group pane. The CIC status will update
accordingly if there has been any change.
COT Test
Pre/Post 95 Support for GRS/GRA
Suppress UCICs
This feature allows you control the sending of UCIC. By default, UCIC
is sent for National calls, and is suppressed for International calls,
based on the Network Indicator setting of the SS7 Stack. You can
change these setting if required the SS7 Stack pane.
Control CICs on up to 32 IMGs
Gain Control on SS7 Channel Groups
Interworking
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ISDN to SIP, SS7 ISUP, and H.323
SS7 ISUP to SIP
ANSI ISUP Originating Line Info Support
21
Product Description
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Call Flows: SS7 ISUP to ISDN
SIP Carrier Identification Code (CIC)
SIP to SS7 ISUP Interworking: Calling Party Category
SS7 ISUP to ISDN Interworking
Support for SPIROU/ITX in SIP INFO
SIP Privacy
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An Overview of ISDN on the IMG
Topic Location: Product Description > ISDN
The IMG supports (ISDN) Integrated Services Digital Network for a complete digital
telephone/telecommunications network which will carry voice, data, and video over
an existing telephone network. The IMG supports 128 Kbps high-speed and highbandwidth service. ISDN non-compressed (512 Kbps compressed) can also provide
on-demand service and can connect up to eight devices simultaneously with each
device being call-managed.
• The basic configuration is 23B+D (Primary Rate Interface) and 30B+D outside
of North America.
• The IMG interfaces to various equipment types supporting the ISDN PRI
protocol, including tandem (Class 4) switches and end office (Class 5)
switches.
• The IMG ISDN PRI implementation is based on ITU-T Q.921 and Q.931
specifications. Each implemented variant references the appropriate interface
document supplied by the equipment manufacturer. The interface document
is usually a variant of the ITU-T recommendations.
• The IMG supports up to 32 D channels. Each D channel provides the High
Data Link Control (HDLC) communications over T1, E1, or DS3 on one
timeslot on the span. Each D channel can control up to 19 other spans in
addition to the span on which it is located.
• The IMG supports sending UUI (User to User Information) between called and
calling parties during the Setup, Clearing, and Active Phase of the Call. The
purpose of the User to User Information support is to pass specific
information not pertaining to the call from one user to another.
National ISDN PRI NI 2
The IMG supports National ISDN PRI NI 2. National ISDN PRI supports Non-Facility
Associated Signaling (NFAS), allowing up to 30 DS1 interfaces and the D channel
backup procedure, as well as B channel availability and provisioning. Connection
endpoint variants are defined for National ISDN User side and Network side.
Depending upon your provisioning requirements, the IMG supports one D channel
per span [Facility Associated Signaling (FAS)], or one D channel managing up to 20
spans [Non-Facility Associated Signaling (NFAS)]. The IMG supports controlling a
total of 32 spans using all FAS D channels, or controlling up to 20 spans per NFAS D
channel (to a maximum of 64 spans per system). You can intermix both FAS and
NFAS D channels with each supporting a different variant.
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An Overview of RADIUS on the IMG
Topic Location: Product Description > RADIUS
Overview
The IMG uses Remote Authentication Dial In User Service (RADIUS) protocol for
streaming the Call Detail Records (CDR). The implementation is compliant with RFC
2865 and RFC 2866. The RADIUS messages are sent to external RADIUS servers.
The IMG RADIUS interface generates an ACCESS, a START & a STOP Request for
the inbound leg and a START & STOP Request for the outbound leg of the call, as
well as data associated with the INVITE, the 200 OK, the BYE and the CANCEL
methods for those legs utilizing a SIP protocol.
Specifications
The IMG implementation of RADIUS is based on the following RADIUS RFCs:
RFC 2865 - Remote Authentication Dial-In User Service (RADIUS)
RFC 2866 - RADIUS Accounting
Formats
The IMG 1010 supports the Cantata RADIUS formats, which Includes some
attributes defined by RFC 2865 and RFC 2866, as well as Cantata Vendor Specific
Attributes (VSA).
Scenarios
The IMG 1010 supports RADIUS Authentication and Accounting. IMG 1010
customer has the option of using one of the following scenarios:
• Authentication and Accounting
In this case an Authentication Server and an Accounting Server are both
assigned to the RADIUS client on the IMG.
•
Accounting only
In this case only an Accounting Server is assigned to the RADIUS client on the
IMG.
•
Authentication only
In this case only an Authentication Server is assigned to the RADIUS client on
the IMG 1010.
See RADIUS Scenarios for more details.
As per RFC 2865 and RFC 2866, the IMG 1010 uses port 1812 for Authentication
and port 1813 for Accounting by default. But these ports are also configurable.
The Authentication and Accounting servers could be the same entity, in which case
both servers will have the same IP address. Or they could be different entities with
different IP addresses.
The RADIUS attributes and VSA’s included in the messages will vary based on the
protocol for used for a specific side of the call, depending on whether it is a TDM
protocol (SS7 or ISDN) or IP protocol (SIP or H.323).
The User name and Password values configured for the Authentication Server used
will be included in the user name and password attributes in the Access Request
message sent from the IMG.
25
Product Description
RADIUS Server Redundancy
The IMG 1010 supports an Active Standby redundancy scheme. Redundancy logic
is independent for Authentication and Accounting Servers.
When configuring RADIUS servers you may create them with an initial priority
preference. The IMG will begin using the preferred Server(s) and switchover to an
alternate server after detecting a communication failure to the currently active
server.
Once the switchover occurs all future Radius messages will flow to the newly active
server until a failure occurs on this server. If an error is detected in trying to send
a Radius message to this newly active server, the IMG will attempt to switch again
back to the previously active server. This behaviour is repeated, until a working
server is detected. If the IMG fails to connect to a RADIUS Server an alarm will be
sent. You can monitor alarms using EventView.
Typically when a RADIUS message needs to be sent to a server, it is assembled
and passed to the OS for transport to the currently active server. These servers are
configured to send the message, wait 2 seconds and then retry sending the
message an additional 3 times. Therefor a RADIUS message will be sent a total of
4 times, with 2 second intervals, before attempting a switchover to the next
server, if one is configured. The switchover behaviour is coupled to the message
type. Therefore an Accounting Server switchover is independent of an
Authentication Server switchover.
Under typical call load it will take a while for the switchover to complete since the
IMG may have many RADIUS messages queued up to the failed server. Each of
these messages must fail and be retried on the newly active server following
notification of the send failure.
NOTE: A negative response does not constitute a server failure.
Supported Packet Types
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Access-Request
Sent to a RADIUS server - conveys information used to determine whether
a user is allowed access to a specific NAS, and any special services
requested for that user.
• Access-Accept
Sent by the RADIUS server - provides specific configuration information
necessary to begin delivery of service to the user.
• Access-Reject
Sent by the RADIUS Server if any value of the received Attributes is not
acceptable
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Accounting-start
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Accounting-stop
RADIUS Server Debug Mode
You can configure your RADIUS Client in Debug Mode so that calls will be
completed whether the RADIUS server is active or not. The IMG will not require
authentication for the RADIUS server to complete a call and no billing information
will be logged.
You enable RADIUS Debug Mode using the RADIUS Client screen.
RADIUS Server Failure Alarm
26
An Overview of RADIUS on the IMG
The IMG provides automatic alarming notification to IMG users when a Radius
Server has changed states and can no longer be accessed. The alarm, reported in
EventView, will include the RADIUS Server Type (Access, Accounting), the Server
ID, the mode of the Radius Server (normal, debug), the state of the Radius Server
and the IP address.
Related Topics
Basic RADIUS Call Flow
Generic RADIUS Attributes
Cantata RADIUS VSAs
RADIUS Call Flow: SS7 to H.323
RADIUS CDR Example: SIP-to-ISDN
Configuring Billing and Authentication
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An Overview of ClientView
Topic Location: Configuration > ClientView
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ClientView is a real-time Graphical User Interface that allows you to do the
following, depending on the Roles a user has been assigned:
Configuration
Ability to graphically configure an IMG 1010 from initial setup to channel
configuration. You can apply changes to the connected nodes with simple
point-and-click operations. See Configuration Summary
Monitoring
Real-time view of an IMG 1010 to monitor hardware status, alarm status,
and calls in progress. You can examine detailed alarms and statistics
without decoding log files. See Monitoring the IMG.
Provisioning
Allows real-time changes required to maintain optimal processing,
including bringing components in or out of service, busying out
components, and managing channel groups. You can avoid low level
channel and trunk group assignments and maintenance by creating and
maintaining trunk groups through the interface.
See An Overview of Provisioning the IMG.
Role assignments are controlled by a system administrator using the
AdminManager utility. See An Overview of User Management.
Main ClientView Window:
10.3.x
29
Product Description
10.5.0
30
An Overview of ClientView
Panes
The following panes appear in the main window.
• Configuration Tree (Top-Left)
This pane contains all of the items that can be configured. You right-click
an item to access additional configuration items. Creating an entry in the
Configuration Tree opens the corresponding Configuration Pane (top
right).
• Configuration Pane (Top-Right)
This pane shows the properties of the selected object. You use this pane
to view and edit your configuration.
The column entitled "As Configured" shows the current configuration
when connected to an IMG 1010. You enter or edit values in the UserSpecified column.
• Buttons (Middle-Right)
The buttons available vary depending on the configuration pane selected.
Click Help to access the on-line help for the pane selected.
See An Overview of Provisioning the IMG for the Provisioning Buttons
available for each pane.
• Information Pane (Lower-Right) This pane includes the following tabs:
Object Table:
For objects that include entries (such as Translation Tables and IP Bearer
Traffic Profiles), this table shows all of the currently configured entries
for the selected object. The contents vary depending on the object. If
you select a row in the table, the configuration pane for that entry
appears in the Configuration pane.
Object Status:
Shows the status messages that have been sent for the object selected.
System Status:
Shows all of the ConfigStatus messages sent from the IMG. The contents
of this tab are the same regardless of the current pane selected.
Socket Activity:
• Monitor Pane (Lower-Left)
This pane shows the activity between ClientView and the IMGs.
• Embedded Help Pane (Middle Left)
The embedded help pane was added to ClientView to help with the
configuration of the IMG. Each embedded help pane has the following:
1. Brief Description of object in ClientView selected
2. Max number of times that object can be created in one
ClientView EMS Pane
3. Related Topics which when selected will link you to
documents in the Online Manual that will help in the
configuration etc. of the selected object
Configuration Tree
Configuration Pane
Buttons
Monitor Pane
Information Pane
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Product Description
Monitor Pane
Buttons
Information Pane
Configuration Pane
Embedded Help
Configuration Tree
32
Using ClientView
Topic Location: Configuration > ClientView
Logging in to ClientView
When you launch to ClientView the Client Socket dialog appears.
1. Enter a valid Username and Password. See your System
Administrator if you do not know this information.
2. After entering the Username and Password a screen will appear asking
whether you would like to load an existing configuration. Select the
correct box for your application. See Below
3. Enter a value in the Host Name or IP Address field. This is the IP
Address of the Control port of the IMG to which you are connecting. If
ClientView is running on the same server as the Gate Control EMS, you
can leave the default "localhost".
Login History
ClientView will maintain entries in the Host Name/IP Address and Username fields so
that you can easily select them from a drop-down list. By default, 5 Host Names and
5 Usernames will be retained in history. You can change these values using the
Application Properties pane. See ClientView Properties.
Creating a Configuration File
33
Product Description
A default configuration file called "default" is created when ClientView connects to
Data Manager.
To save the configuration file with a new name:
1. Click Configuration default in the Configuration Tree
2. Enter a new name in the Filename field of the Configuration default
pane.
Opening a Saved File
To open this configuration going forward:
1. Select File - Open and Commit Configuration File.
2. The available configuration files are listed with their last date of
modification. You can sort files by name or date. Select the desired
configuration file.
NOTE: When you open a configuration file all nodes that are part of that
configuration will be reset and reconfigured.
Saving a Config File through a Software Upgrade
To continue using a configuration file when you upgrade the IMG software do the
following:
1. Save the *.csa file configuration file in the config folder to another
folder.
2. After upgrading, copy the *csa file back to the config folder.
3. Start ClientView and select File - Open and Commit Configuration
File and select the *.csa file.
You access configuration panes via the tree in the left pane by right-clicking on
existing items and selecting further configuration options from the list.
When you create a new configuration entry, the configuration pane appears in the
left pane. You enter values in the User-Specified column.
Committing an Object
After you make entries in a ClientView pane, you must commit the object to make
the new configuration take effect.
To Commit an object:
• Right-click on the entry in the Configuration Tree and select Commit
•
Or simple select any other object in the tree.
ClientView Tips
•
•
•
34
You access configuration panes via the tree in the left pane by right-clicking
on existing items and selecting further configuration options from the list.
When you create a new configuration entry, the configuration pane appears in
the left pane. You enter values in the User-Specified column.
IMG Network-wide objects such as Routing Configuration and External
Network Elements are accessed under Cantata IMG EMS.
Using ClientView
•
•
•
•
Objects configured for individual IMGs (Facilities, Signaling) are accessed
under the Physical IMG entry you created.
For some objects (such as Routing Tables), you first create a container object
(Routing Tables) and then you add actual Route Tables.
To de-select an item in a drop-down list, press CTRL and click on the item.
The last entry in each tree is the Object ID and Position information for
internal use and does not result in any action if you select it.
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The ClientView Main Window
Topic Location: Configuration > ClientView
Panes
The following panes appear in the main window.
• Configuration Tree (Top-Left) - This pane contains all of the items that
can be configured. You right-click an item to access additional
configuration items. Creating an entry in the Configuration Tree opens the
corresponding Configuration Pane (top right).
•
Configuration Pane (Top-Right) - This pane shows the properties of
the selected object. You use this pane to view and edit your
configuration. The column entitled As Configured shows the current
configuration when connected to an IMG 1010. You enter or edit values in
the User-Specified column.
•
Status Pane (Lower-Right) - This pane shows status information for
the item selected. The contents varies depending on the item. If you
select a row in the status table, the configuration pane for that entry
appears in the top right pane.
•
Client/Server Monitor Pane (Lower-Left) - This pane shows the level
of activity between ClientView and the IMGs.
•
Embedded Help Pane (10.5.x) - The embedded help pane was added
to ClientView to help with the configuration of the IMG. Each embedded
help pane has the following:
1. Brief Description of object in ClientView selected
2. Max number of times that object can be created in one ClientView
EMS Pane
3. Related Topics which when selected will link you to documents in the
Online Manual that will help in the configuration etc. of the selected
object
Changing Pane Display
If you want to display only the top or bottom pane, you can click the corresponding
arrow button on the bar between the upper pane and the lower pane. These arrow
buttons also display vertically to allow you to manipulate the display of the left and
right panes.
Related Topics
ClientView Menus
ClientView Indicators
Using ClientView
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ClientView Menus
Topic Location: Configuration > ClientView
Menu
File
Edit
Selection
Open and
Commit
Configuration
File
Save
Configuration
File
Open a configuration file. The
configuration is automatically
sent to the IMG.
Exit
Exit ClientView
Delete
Current
Object
Delete the object currently
selected in the Configuration
Tree.
Commit
Current
Object
Commit the currently selected
object.
Undo
Changes
Reverts the values in the
current pane back to the
previous state.
Expand Tree
Opens all entries in the
Configuration Tree.
Collapse
Tree
Closes all entries in the
Configuration Tree.
View Socket
Activity
Opens a Client Socket window
showing messaging between
ClientView and the IMG.
View
Communications
Description
Save the Configuration File you
are working on.
39
Product Description
Auto-Commit
Tools
Launch
EventView
40
When AutoCommit is
enabled, the
entries you
make in a
pane are
automatically
saved and
downloaded
to the IMG
when click
on another
entry in the
Configuration
Tree. AutoCommit is
enabled by
default and
cannot be
disabled by
the user.
IMPORTANT
NOTE: Under
certain
circumstances
involving
complex
messaging
between
ClientView and
GCEMS, AutoCommit may
be disabled
and changes
you make will
not be
automatically
sent to the
IMG. The fields
in the
Configuration
Pane will be
orange when
this condition
exists and the
box next to the
Auto-Commit
selection will
not be checked
(as shown
above). You
should reenable AutoCommit by
selecting AutoCommit from
the Tools
menu.
Select this option to launch the
EventView utility.
See Introduction to EventView.
Properties
Configure Various ClientView
Properties
See ClientView Properties
Validation
Report
Confirm that your configuration
does not contain any errors
that may prohibit proper
operation.
See Validating Your
Configuration
ClientView Menus
Help
Create Tree
Automatically create basic
objects to begin your
configuration.
See Auto-create ClientView
Configuration Tree
Visit Cantata
Website
Opens the Cantata website in a
browser.
www.Cantata.com
Provides information on Java
Heap statistics, ClientView
version, and Environment
Variables.
Launches the IMG 1010 On-line
Help.
The HTML-based Help format is
designed to run on a wide
variety of browsers and
platforms. When you click the
Help button you will be
presented with specific
information about the
configuration pane that you are
currently working on.
You can retrieve WebHelp
updates from the Cantata
Support site that will replace
the WebHelp version launched
from ClientView. You will
always have the option to
revert back to the original Help
version.
About
ClientView
IMG Help
Update IMG
Help
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An Overview of Provisioning the IMG
Topic Location: Provisioning the IMG
Before You Begin
You must have an assigned role of Provisioning or Configuration to perform
provisioning tasks.
Methods
Provisioning on the IMG is performed in one of two ways:
1. Buttons - You can perform provisioning by clicking buttons on the bottom of
the Configuration pane.
2. Select Options from Configuration Tree - You can perform provisioning by
right-clicking on an entry in the Configuration tree and selecting the desired
action.
Provisioning Tasks
System (Cantata IMG EMS)
• Clear Logs
Physical IMG
• Rest Node
• Clear Software
• Download Raw File
• Download Node License
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Product Description
Facility
• Bring Span in Service
• Take Span out of Service
SS7 Signaling
• Switchover
SS7 Link
• Bring in Service
• Take out of Service
• Inhibit
• Uninhibit
H.323 Signaling
• Discover GK
• Register with GK
• Unregister with GK
VoIP Module
• Update Status
IP Bearer Profiles
• Save Profiles
Routing
• Download Translations
• Resource Table
• Incoming GW Table
• GW ID Table
• Update Circuit Status
• Save Translation Table
• Save Treatment Table
• Save Route List
• Save VIF (Vocabulary Index File)
Telnet Enable
• Reset Telnet Client
• Update Status
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Monitoring the IMG
Topic Location: Monitoring the IMG
Using ClientView
All users are assigned the ability to perform monitoring functions by default. You are
allowed to view configuration and status panes in ClientView, but you are not allowed
to make configuration changes or perform provisioning functions.
There are three types of panes that you can use to monitor the IMG:
• Configuration Pane (Top Right) - Shows the configuration settings for an
object. May also include Status information, such as EMS Connection State.
•
Info Pane (Bottom Right) - Shows the entries that are included in an object,
such as the Channel Groups included in a Route List.
•
Status Pane (Bottom Right) - Shows status information for an object, such as
an SS7 CIC (In Service/Out of Service).
See Monitoring the IMG Using ClientView.
EventView
EventView is a companion product of ClientView that displays system alarms, filters
alarms related to severity and various entities, and logs alarms to files.
See An Overview of EventView.
Using SNMP
The IMG supports the following for SNMP:
• Ability to monitor Ethernet, DS1 and DS3 interfaces using industry standards
MIBs
• Get and Trap commands (SETs are not be supported)
• Support for industry standard MIBs among common Network Management
tools.
See An Overview of SNMP and Configuring SNMP.
Using the Multi Router Traffic Grapher (MRTG) Tool
The Multi Router Traffic Grapher (MRTG) Tool is used to monitor various areas on
network links. MRTG generates HTML pages containing PNG images which provide a
live visual representation of this traffic.
See Using the Multi Router Traffic Grapher (MRTG) Tool.
Cacti Watcher Function (10.5.0)
Cacti is a network monitoring/graphing application which is replacing the MRTG
(Multi Router Traffic Grapher) monitoring/graphing tool. Cacti is built around the
RRDTool which is an open source high performance data logging and graphing
system. Cacti will be used to monitor information such as Network Traffic, CPU
Utilization, Memory, and Temperature. Based on some preset thresholds, Cacti has
the ability to send alerting Email once the thresholds have been exceeded. Cacti has
45
Product Description
better performance than MRTG and operates using user generated graphs. Below is a
list of the components that make up the Cacti monitoring system
•
•
•
•
•
•
•
•
Apache HTTP Server - A web server responsible for accepting HTTP requests.
mySQL database - Multi Threaded, MultiUser, SQL database management
system.
RRDTool - Round Robin Database - RRD is a system to store and display timeseries data like network traffic, temperatures, etc
php scripting - PHP is a widely-used general-purpose scripting language that
is especially suited for Web development. PHP can be embedded into HTML.
Perl Scripting - Perl is a high level programming language that is stable and is
a cross platform programming language. It is used in critical projects in the
public and private sectors and is widely used to program web applications of
all needs.
Cacti Monitoring Tool - Cacti is a complete network graphing solution
designed to harness the power of RRDTool's data storage and graphing
functionality
Cacti Plug-In Architecture - Ability to add features to Cacti
Cacti Thresholding Plug In - Enables the ability to send e-mails based on
preset thresholds
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An Overview of Troubleshooting
Topic Location: Troubleshooting
Using Telnet
Telnet access can be used for additional diagnostics such as layer 3 and layer 4 call
tracing. The username for telnet access is excel and the password is excel2004. You
use the Telnet Client pane to enable/disable access or to verify the telnet status.
Logs
The GC EMS automatically creates the following logs, located at
/opt/cantata/common/logs/
•
EventLog_<process ID>.log - Contains the events recorded by EventView.
•
BackupFileManager.log - Logs when files are backed-up.
•
alarm.log - Logs all actions taken while configuring the IMG, and the text of
any alarm conditions that occur. If an IMG software fault occurs, it is written
to the alarm.log.
•
AdminMgr.log - Records information on who has logged into the GC EMS.
File management will be provided via BackupFileManager (IMG). All statistic object
files are logged at fixed 15 minute intervals.
File rollover from day to day is automatic. The name of the rolled log file will be
appended with the calendar date code. File names are not user-adjustable.
IMPORTANT NOTE:
The log files are created upon IMG startup. Under no circumstances shall these
files be deleted from the statistics directory while the IMG system software is
running. Logging will stop for the statistics object of the deleted file. It is
recommended that the log files be copied to another directory before viewing.
Call Tracing
Call Tracing allows you to view various information on a per call basis. A Call Trace
log includes information such as Call Duration, RTCP Stats, and Codecs
See Call Tracing for more information.
Call Statistics
Call Statistics logs are automatically enabled on the IMG to provide support
personnel with key information used to identify the operational status of the system.
A separate log file is generated for each protocol on each node. Logs are generated
every 15 minutes and backed up using the Backup File Manager.
See Call Statistics for more information.
Remote Desktop
To allow remote access to your GateControl EMS Server for Technical Support, see
Configuring Remote Desktop.
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Product Description
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48
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