Cisco Cisco IOS Software Release 12.2(11)T
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Cisco IOS Release 12.2(11)T
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Session Initiation Protocol for Voice over IP
Feature for Cisco uBR925 Cable Access Router
and Cisco CVA122 Cable Voice Adapter
Feature for Cisco uBR925 Cable Access Router
and Cisco CVA122 Cable Voice Adapter
Feature History
This document describes the Session Initiation Protocol for Voice over IP feature for Cisco uBR925
cable access routers and Cisco CVA122 Cable Voice Adapters in Cisco IOS Release 12.2(11)T. This
document provides information on configuring the Session Initiation Protocol for Voice over IP feature
to enable the setup of voice and multimedia calls across Internet Protocol (IP) networks.
cable access routers and Cisco CVA122 Cable Voice Adapters in Cisco IOS Release 12.2(11)T. This
document provides information on configuring the Session Initiation Protocol for Voice over IP feature
to enable the setup of voice and multimedia calls across Internet Protocol (IP) networks.
This document includes the following sections:
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Feature Overview
The Cisco Session Initiation Protocol (SIP) functionality enables Cisco access platforms to signal the
setup of voice and multimedia calls over IP networks.
setup of voice and multimedia calls over IP networks.
SIP is an ASCII-based, application-layer control protocol that can be used to establish, maintain, and
terminate calls between two or more endpoints. SIP is an alternative protocol developed by the Internet
Engineering Task Force (IETF) for multimedia conferencing over IP. SIP features are compliant with
IETF RFC 2543, SIP: Session Initiation Protocol, published in March 1999. You can view RFC 2543 at
terminate calls between two or more endpoints. SIP is an alternative protocol developed by the Internet
Engineering Task Force (IETF) for multimedia conferencing over IP. SIP features are compliant with
IETF RFC 2543, SIP: Session Initiation Protocol, published in March 1999. You can view RFC 2543 at
http://www.ietf.org/rfc/rfc2543.txt
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Release
Modification
12.2(11)T
Support for the Session Initiation Protocol for Voice over IP feature was
introduced for Cisco uBR925 cable access routers and Cisco CVA122
Cable Voice Adapters.
introduced for Cisco uBR925 cable access routers and Cisco CVA122
Cable Voice Adapters.