RFC 5373: Requesting Answering Modes for the Session Initiation Protocol (SIP)

This document extends SIP with two header fields and associated option tags that can be used in INVITE requests to convey the requester's preference for…

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Outgoing relationships (7 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
Normative reference — RFC 3840: Indicating User Agent Capabilities in the Session Initiation Protocol (SIP)
Normative reference — RFC 4474: Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP)
Normative reference — RFC 3841: Caller Preferences for the Session Initiation Protocol (SIP)
Informative reference — RFC 3325: Private Extensions to the Session Initiation Protocol (SIP) for Asserted Identity within Trusted Networks