Specifications

Cisco Unified Survivable Remote Site Telephony Feature Roadmap

Feature Roadmap

Cisco Unified Survivable Remote Site Telephony Version 4.0 System Administrator Guide

Additional Cisco Unified IP Phone Support

The following IP phones are supported with Cisco Unified SRST systems:

• Cisco Unified IP Phone 7911G

• Cisco Unified IP Phone 7941G and Cisco Unified IP Phone 7941G-GE

• Cisco Unified IP Phone 7961G and Cisco Unified IP Phone 7961G-GE

In addition, the Cisco Unified IP Phone 7914 Expansion Module can attach to the Cisco 7941G-GE and

Cisco 7961G-GE. The Cisco 7914 Expansion Module adds additional features, such as adding 14 line

appearances or speed-dial numbers to your phone. You can attach one or two expansion modules to your

IP phone. When you use two expansion modules, you have 28 additional line appearances or speed-dial

numbers, or a total of 34 line appearances or speed-dial numbers. For more information, see the

Cisco IP Phone 7914 Expansion Module Quick Start Guide.

No additional SRST configuration is required for these phones. They are supported in the appropriate

Cisco IOS commands.

The show ephone command has been enhanced to display the configuration and status of the new

Cisco IP Phones added to SRST Version 4.0. For more information, see the show ephone command in

the Cisco Unified SRST and Cisco Unified SIP SRST Command Reference (All Versions).

Cisco IP Communicator Support

Cisco IP Communicator is a software-based application that delivers enhanced telephony support on

personal computers. This SCCP-based application allows computers to function as IP phones, providing

high-quality voice calls on the road, in the office, or from wherever users may have access to the

corporate network. Cisco IP Communicator appears on a user's computer monitor as a graphical,

display-based IP phone with a color screen, a key pad, feature buttons, and soft keys.

Fax passthrough using SCCP and ATAs Support

Fax passthrough mode is now supported using Cisco VG 224 voice gateways, Analog Telephone

Adaptors (ATA), and SCCP. ATAs ship with SIP firmware, so SCCP firmware must be loaded before this

feature can be used.

Note For ATAs that are registered to a Cisco Unified SRST system to participate in FAX calls, they must have

their ConnectMode parameter set to use the "standard payload type 0/8" as the RTP payload type in FAX

passthrough mode. For ATAs used with Cisco Unified SRST 4.0 and higher systems, this is done by

setting bit 2 of the ConnectMode parameter to 1 on the ATA. For more

information, see the "Parameters

and Defaults" chapter in the Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor

Administrator's Guide for SCCP (version 3.0), at

http://www.cisco.com/en/US/products/hw/gatecont/ps514/products_administration_guide_chapter0918

6a00801e0e00.html.

H.323 VoIP Call Preservation Enhancements for WAN Link Failures

H.323 VoIP call preservation enhancements for WAN link failures sustains connectivity for H.323

topologies where signaling is handled by an entity, such as Cisco Unified CallManager, that is different

from the other endpoint and brokers signaling between the two connected parties.