Specifications

Cisco Unified Survivable Remote Site Telephony Feature Roadmap

Feature Roadmap

Cisco Unified Survivable Remote Site Telephony Version 4.0 System Administrator Guide

Feature Roadmap

Table 2 provides a feature history summary of Cisco Unified SRST features.

Setting Up Secure Survivable Remote Site Telephony Describes the Media and Signaling Authentication and Encryption

feature for Cisco IOS MGCP gateways in SRST mode. This chapter

includes the following tasks:

• Preparing the SRST Router for Secure Communication,

page 113

• Importing Phone Certificate Files in PEM Format to the Secure

SRST Router, page 122

• Configuring Cisco Unified CallManager to the Secure SRST

Router, page 129

• Enabling SRST Mode on the Secure SRST Router, page 132

• Verifying Phone Status and Registrations, page 134

Integrating Voice Mail with Cisco Unified SRST Describes how to set up voice mail. This chapter includes the

following tasks:

• Configuring Direct Access to Voice Mail, page 149

• Configuring Message Buttons, page 152

• Redirecting to Cisco Unified CallManager Gateway, page 154

• Configuring Call Forwarding to Voice Mail, page 154

Monitoring and Maintaining Cisco Unified SRST Provides a list of useful show commands for monitoring and

maintaining SRST.

Appendix A: Preparing Cisco Unified SRST Support

for SIP

Describes special configurations to support SIP calls.

Table 1 Cisco Unified SRST Configuration Sequence (continued)

Chapter or Appendix Description

Table 2 Cisco Unified SRST Features by Cisco IOS Release

Cisco Unified SRST

Version Cisco IOS Release Modifications

Version 4.0 12.4(4)XC

12.4(9)T

• Additional Cisco Unified IP Phone Support for the Cisco Unified IP Phone

7911G, Cisco Unified IP Phone 7941G, Cisco Unified IP Phone 7941G-GE,

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

page 8

• Cisco IP Communicator Support, page 8

• Fax passthrough using SCCP and ATAs Support, page 8

• H.323 VoIP Call Preservation Enhancements for WAN Link Failures, page 8

• Video Support, page 9

Version 3.4 12.4(4)T

• SIP SRST, Version 3.4, page 9