Negotiating Media Multiplexing Using the Session Description Protocol
RFC 9143, “Negotiating Media Multiplexing Using the Session Description Protocol”, is a Proposed Standard document published in February 2022 by C. Holmberg, H. Alvestrand, C. Jennings. It updates RFC 3264, RFC 5888, RFC 7941. It obsoletes RFC 8843. The canonical text is published by the RFC Editor.
Abstract
This specification defines a new Session Description Protocol (SDP) Grouping Framework extension called 'BUNDLE'. The extension can be used with the SDP offer/answer mechanism to negotiate the usage of a single transport (5-tuple) for sending and receiving media described by multiple SDP media descriptions ("m=" sections). Such transport is referred to as a "BUNDLE transport", and the media is referred to as "bundled media". The "m=" sections that use the BUNDLE transport form a BUNDLE group.
This specification defines a new RTP Control Protocol (RTCP) Source Description (SDES) item and a new RTP header extension.
This specification updates RFCs 3264, 5888, and 7941.
This specification obsoletes RFC 8843.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 9143 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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