Specifications

Overview of Cisco Unified SRST

Support for Cisco Unified IP Phones, Platforms, Cisco Unified CallManager, Signals, Languages, and Switches

Cisco Unified Survivable Remote Site Telephony Version 4.0 System Administrator Guide

Cisco Unified IP Phone Support

For the most up-to-date information about Cisco Unified IP Phone support, see the Cisco Unified

SRST 4.0 Supported Firmware, Platforms, Memory, and Voice Products at

http://www.cisco.com/en/US/customer/products/sw/voicesw/ps2169/prod_installation_guide09186a00

805f6f1b.html.

The following IP phones are supported by Cisco Unified SRST 4.0:

• Cisco Analog Telephone Adaptor (ATA) 186 and Cisco ATA 188 Version 2.16 and higher with

Cisco Unified CallManager 3.3 and higher

Cisco Unified SRST supports Cisco ATA 186 and Cisco ATA 188 using Skinny Client Control

Protocol (SCCP) for voice calls only

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.

• Cisco Unified IP Phone 7902G

• Cisco Unified IP Phone 7905G

• Cisco Unified IP Phone 7910

• Cisco Unified IP Phone 7911G

• Cisco Unified IP Phone 7912G

• Cisco Unified IP Phone Expansion Module 7914

• Cisco Unified Wireless IP Phone 7920

• Cisco IP Conference Station 7935

• Cisco Unified IP Conference Station 7936

• Cisco Unified IP Phone 7940G

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

• Cisco Unified IP Phone 7960G

• Cisco UnifiedIP Phone 7961G, Cisco UnifiedIP Phone 7961G-GE

• Cisco Unified IP Phone 7970G

• Cisco Unified IP Phone 7971G-GE

• Cisco VG224 Analog Phone Gateway, IOS Version 12.4(4)XC with Cisco Unified SRST 4.0 running

Cisco IOS Software Release 12.4(4)XC and later. For configuration information see, the “Enabling

Fallback to Cisco Unified SRST on the Voice Gateway” section in SCCP Controlled Analog (FXS)

Ports with Supplementary Features in Cisco IOS Gateways at

http://www.cisco.com/en/US/products/ps6441/products_feature_guide09186a0080483a76.html#w

p1301293.

• Cisco VG248 Analog Phone Gateway Version 1.2(1) and higher