A description is ordered lines
01SDP is a structured sequence of single-letter fields, not a negotiation or transport protocol.
Related RFCs and changes
“Updates” changes part of an earlier RFC. “Obsoletes” replaces it. This list shows selected related documents.
DIAGRAM§ 5 ↗
RFC 8866 · § 5EXAMPLE
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Media descriptions
Each m= starts a media-level description.
Protocol participantThreat or exceptionProtocol controlSimplified drawings · precise section references
RFC 4566RFC 8866 § 10
This revision clarifies syntax and behavior, obsoletes the k= encryption-key field, and updates attribute and internationalization guidance.
Read the updated RFC section ↗Each line has the form type=value.
- Each line has the form type=value.
- Field ordering and required fields are specified by the grammar.
- The v=0 value identifies the SDP format version, not an RFC revision number.
The illustration is schematic. Example values are illustrative; profiles and later security guidance can add requirements.
Read the RFC section ↗Diagrams simplify the RFC. Read the linked sections for complete requirements.
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