Real Time Control Protocol (RTCP) attribute in Session Description Protocol (SDP), October 2003
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The Session Description Protocol (SDP) is used to describe the parameters of media streams used in multimedia sessions. When a session requires multiple ports, SDP assumes that these ports have consecutive numbers. However, when the session crosses a network address translation device that also uses port mapping, the ordering of ports can be destroyed by the translation. To handle this, we propose an extension attribute to SDP.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.