Title: Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)
Author(s): J. Rosenberg, H. Schulzrinne, P. Kyzivat.
Status: PROPOSED STANDARD
Date: Aug 2004
Length: 81360
This specification defines mechanisms by which a Session Initiation Protocol (SIP) user agent can convey its capabilities and characteristics to other user agents and to the registrar for its domain. This information is conveyed as parameters of the Contact header field.
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