RFC 6993: Instant Messaging and Presence Purpose for the Call-Info Header Field in the Session Initiation Protocol (SIP)

This document defines and registers a value of "impp" ("instant messaging and presence protocol") for the "purpose" header field parameter of the Call-Info…

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Outgoing relationships (3 related RFCs)

Normative reference — RFC 3261: SIP: Session Initiation Protocol
Normative reference — RFC 3986: Uniform Resource Identifier (URI): Generic Syntax
Normative reference — RFC 6120: Extensible Messaging and Presence Protocol (XMPP): Core