An Offer/Answer Model with Session Description Protocol (SDP), June 2002
- File formats:
- PROPOSED STANDARD
- RFC 2543
- Updated by:
- RFC 6157, RFC 8843
- J. Rosenberg
- mmusic (rai)
Discuss this RFC: Send questions or comments to firstname.lastname@example.org
This document defines a mechanism by which two entities can make use of the Session Description Protocol (SDP) to arrive at a common view of a multimedia session between them. In the model, one participant offers the other a description of the desired session from their perspective, and the other participant answers with the desired session from their perspective. This offer/answer model is most useful in unicast sessions where information from both participants is needed for the complete view of the session. The offer/answer model is used by protocols like the Session Initiation Protocol (SIP). [STANDARDS-TRACK]
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.