RFC 4508: Conveying Feature Tags with the Session Initiation Protocol (SIP) REFER Method

The SIP "Caller Preferences" extension defined in RFC 3840 provides a mechanism that allows a SIP request to convey information relating to the originator's…

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Outgoing relationships (3 related RFCs)

Normative reference — RFC 3261: SIP: Session Initiation Protocol
Normative reference — RFC 3840: Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)
Normative reference — RFC 3515: The Session Initiation Protocol (SIP) Refer Method

Incoming relationships (1 related RFC)

Updated by — RFC 8217: Clarifications for When to Use the name-addr Production in SIP Messages