RFC 6809: Mechanism to Indicate Support of Features and Capabilities in the Session Initiation Protocol (SIP)

This specification defines a new SIP header field, Feature-Caps. The Feature-Caps header field conveys feature-capability indicators that are used to indicate…

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Outgoing relationships (11 related RFCs)

Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 3261: SIP: Session Initiation Protocol
Normative reference — RFC 5234: Augmented BNF for Syntax Specifications: ABNF
Informative reference — RFC 5226: Guidelines for Writing an IANA Considerations Section in RFCs
Informative reference — RFC 5246: The Transport Layer Security (TLS) Protocol Version 1.2
Informative reference — RFC 3840: Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)
Informative reference — RFC 5626: Managing Client-Initiated Connections in the Session Initiation Protocol (SIP)
Informative reference — RFC 3841: Caller Preferences for the Session Initiation Protocol (SIP)
Informative reference — RFC 3968: The Internet Assigned Number Authority (IANA) Header Field Parameter Registry for the Session Initiation Protocol (SIP)
Informative reference — RFC 2506: Media Feature Tag Registration Procedure
Informative reference — RFC 4485: Guidelines for Authors of Extensions to the Session Initiation Protocol (SIP)

Incoming relationships (2 related RFCs)

Normatively referenced by — RFC 8197: A SIP Response Code for Unwanted Calls
Normatively referenced by — RFC 8688: A Session Initiation Protocol (SIP) Response Code for Rejected Calls