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Table Of Contents

Cisco Unified SIP SRST Feature Roadmap

Contents

Documentation Organization

Feature Roadmap


Cisco Unified SIP SRST Feature Roadmap



Note Prior to version 4.0, the name of this product was Cisco SIP SRST.


This chapter contains a summary of Cisco Unified Session Initiation Protocol (SIP) Survivable Remote Site Telephony (SRST) features and the location of feature documentation.

Use Cisco Feature Navigator to find information about platform support and Cisco IOS software image support. Access Cisco Feature Navigator at http://www.cisco.com/go/fn. You must have an account on Cisco.com. If you do not have an account or have forgotten your username or password, click Cancel at the login dialog box and follow the instructions that appear.


Note The Cisco IOS Voice Configuration Library includes a standard library preface, a glossary, and feature and troubleshooting documents and is located at http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/vcl.htm.


Contents

Documentation Organization

Feature Roadmap

Documentation Organization

This book consists of the following chapters as shown in Table 1.

Table 1 Cisco Unified SIP SRST Configuration Sequence 

Chapter or Appendix
Description

Cisco Unified SIP SRST Feature Overview

Gives a brief description of Cisco Unified SIP SRST and provides information on the supported platforms and Cisco Unified IP phones. In addition, it describes any prerequisites or restrictions that should be addressed before Cisco Unified SIP SRST is configured.

Upgrading from Cisco SIP SRST 3.0 to Cisco Unified SIP SRST 4.0

Describes the two versions of Cisco Unified SIP SRST. This chapter gives a brief overview of each version. In addition, Version 3.4 requires a few changes and new configurations as compared to the setup that was required for Version 3.0. This chapter includes the following tasks:

Disabling Call Redirection

Enabling SIP-to-SIP Connection Capabilities

Configuring the SIP Registrar

Describes features available in Version 3.0 that are also necessary for Version 3.4. Features include instructions on how to provide a backup to an external SIP proxy server by providing basic registrar services. These services are used by a SIP IP phone in the event of a WAN connection outage when the SIP phone is unable to communicate with its primary SIP proxy. This chapter includes the following tasks:

Configuring the SIP Registrar

Configuring Backup Registrar Service to SIP Phones

Configuring Backup Registrar Service to SIP Phones (Using Optional Commands)

Verifying SIP Registrar Configuration

Verifying Proxy Dial-Peer Configuration

Configuring Cisco Unified SIP SRST Features Using Redirect Mode

Describes features using redirect mode. This chapter includes the following tasks:

Configuring Call Redirect Enhancements to Support Calls Between SIP IP Phones for Cisco Unified SIP SRST

Configuring Sending 300 Multiple Choice Support

Configuring Cisco Unified SIP SRST Features Using Back-to-Back User Agent Mode

Describes features using back-to-back user agent mode. Features include Cisco Unified SIP SRST support for standardized RFC 3261 SIP phones. This chapter includes the following tasks:

Configuring SIP Phone Features

Configuring SIP-to-SIP Call Forwarding

Configuring Call Blocking Based on Time of Day, Day of Week, or Date


Feature Roadmap

Table 2 provides a summary of Cisco Unified SIP SRST features by release.

Table 2 Cisco Unified SIP SRST Features by Cisco IOS Release 

Cisco SIP SRST Version
Cisco IOS Release
Modifications

Version 4.0

12.4(4)XC

Version 3.4

12.4(4)T

Cisco SIP SRST 3.4 includes the following features:

Upgrading from Cisco SIP SRST 3.0 to Cisco Unified SIP SRST 4.0

Configuring Cisco Unified SIP SRST Features Using Redirect Mode (formerly SIP SRST)

Configuring Cisco Unified SIP SRST Features Using Back-to-Back User Agent Mode

Version 3.2

12.3(11)T

The SIP SRST feature was updated to include additional prerequisite information, including phone and memory requirements.

Version 3.1

12.3(7)T

The SIP SRST feature was integrated into Cisco IOS Release 12.3(7)T.

Version 3.0

12.2(15)ZJ 12.3(4)T

The SIP SRST feature was introduced.



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Posted: Sun Feb 26 15:54:20 PST 2006
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