Specifications

Cisco IOS Survivable Remote Site Telephony Fea ture Roadmap

Feature Roadmap

Cisco IOS Survivable Remote Site Telephony Version 3.4 System Administrator Guide

During Cisco CallManager fallback, Cisco SRST considers the Cisco VG248 to be a group of Cisco IP

phones. Cisco SRST counts each of the 48 ports on the Cisco VG248 as a separate Cisco IP phone.

Support for Cisco VG248 Version 1.2(1) and higher is also available in Cisco SRST Version 2.1.

For more information, see the Cisco VG248 Analog Phone Gateway Data Sheet and the Cisco VG248

Analog Phone Gateway Version 1.2(1) Release Notes.

Information About Features That Were New in Cisco SRST V2.1

Cisco SRST V2.1 introduced the new features described in the following sections:

• Additional Language Options for IP Phone Display

• Cisco SRST Aggregation

• Cisco ATA 186 and ATA 188 Support

• Cisco IP Phone 7902G Support

• Cisco IP Phone 7905G Support

• Cisco IP Phone 7912G Support

• Cisco IP Phone Expansion Module 7914 Support

• Enhancement to the dialplan-pattern Command

Additional Language Options for IP Phone Display

Displays for the Cisco IP Phone 7940G and Cisco IP Phone 7960G can be configured with ISO-3166

codes for the following countries:

• France

• Germany

• Italy

• Portugal

• Spain

• United States

Note This feature is available only in Cisco SRST running under Cisco CallManager V3.2.

For configuration information, see the “Configuring IP Phone Language Display” section on page 47.

Cisco SRST Aggregation

For systems running Cisco CallManager 3.3(2) and later, the restriction of running Cisco SRST on a

default gateway was removed. Multiple SRST routers can be used to support additional phones. Note

that dial peers and dial plans need to be carefully planned and configured in order for call transfer and

forwarding to work properly.