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RFC 8866 / MECHANISMS

Session scope and media scope

02

Some session-level values apply to media descriptions unless overridden at the media level.

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DIAGRAM§ 5 ↗
RFC 8866 · § 5EXAMPLE
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Session scope and media scopeSome session-level values apply to media descriptions unless overridden at the media level. Current state: Video override.Session scope and media scopesession c= address Am=audioinherits address Am=videoc= address B overrides
03
Video override

A video-level connection field supplies its own address.

Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
KEY POINT

A media description begins with m=.

  • A media description begins with m=.
  • A session-level c= can provide a default connection address.
  • A media-level c= overrides that default for its media description.
DETAILS

The illustration is schematic. Example values are illustrative; profiles and later security guidance can add requirements.

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Privacy
All chapters in this RFC
  1. A description is ordered lines
  2. Session scope and media scope
  3. An m line describes transport
  4. Time and direction are independent
  5. A description is not authorization
RFC 9700 / CHAPTERS

Chapters

For full details, tables, algorithms, and exceptions, read the original RFC.

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