March 2006
Intermediate to advanced
464 pages
12h 16m
English
book
The IMS: IP Multimedia Concepts And Services, Second Edition
by Miikka Poikselka, Georg Mayer, Hisham Khartabil, Aki Niemi
Content preview from The IMS: IP Multimedia Concepts And Services, Second Edition
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Chapter 13. SDP
The Session Description Protocol (SDP) is an application-layer protocol intended to describe multimedia sessions. It is a text-based protocol. When describing a session the caller and callee indicate their respective "receive" capabilities, media formats and receive address/port.
Capability exchange can be performed during session setup or during the session itself – i.e., while the session is in progress.
At the time of writing, a new SDP specification is in the process of being finalized. The current version is [Draft-ietf-mmusic-sdp-new] and the earlier version was specified in [RFC2327].
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