RFC 5850

A Call Control and Multi-Party Usage Framework for the Session Initiation Protocol (SIP), May 2010

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R. Mahy
R. Sparks
J. Rosenberg
D. Petrie
A. Johnston, Ed.
sipping (rai)

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DOI:  http://dx.doi.org/10.17487/RFC5850

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This document defines a framework and the requirements for call control and multi-party usage of the Session Initiation Protocol (SIP). To enable discussion of multi-party features and applications, we define an abstract call model for describing the media relationships required by many of these. The model and actions described here are specifically chosen to be independent of the SIP signaling and/or mixing approach chosen to actually set up the media relationships. In addition to its dialog manipulation aspect, this framework includes requirements for communicating related information and events such as conference and session state and session history. This framework also describes other goals that embody the spirit of SIP applications as used on the Internet such as the definition of primitives (not services), invoker and participant oriented primitives, signaling and mixing model independence, and others. This document is not an Internet Standards Track specification; it is published for informational purposes.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.

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