Specifications

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Cisco Unified SIP SRST 4.0 System Administrator Guide
CONTENTS
Cisco Unified SIP SRST Feature Roadmap 1
Contents 1
Documentation Organization 1
Feature Roadmap 3
Cisco Unified SIP SRST Feature Overview 5
Contents 5
Cisco Unified SIP SRST Description 5
Support for Cisco Unified IP Phones and Platforms 7
Finding Cisco IOS Software Releases That Support Cisco Unified SRST 7
Cisco Unified IP Phone Support 8
Platform and Memory Support 8
Prerequisites for Configuring Cisco Unified SIP SRST 8
Restrictions for Configuring Cisco Unified SIP SRST 10
Where to Go Next 11
Additional References 11
Related Documents 11
Standards 12
MIBs 12
RFCs 12
Technical Assistance 13
Getting Started 15
Contents 15
Comparison of Cisco SIP SRST 3.0 and Cisco Unified SIP SRST 4.0 15
Configuration and Upgrade Tasks 16
How to Upgrade from Cisco SIP SRST 3.0 to Cisco Unified SIP SRST 4.0 18
Disabling Call Redirection 18
Enabling SIP-to-SIP Connection Capabilities 21
Configuring the SIP Registrar 23
Contents 23