Session Description Protocol (SDP) Offer/Answer Procedures for Interactive Connectivity Establishment (ICE)
This specification has been revised 5 times since RFC 4091 (2005). Each document below formally obsoleted the one before it; the versions still in force are listed first.
Revision timeline
Current versions — implement against these
Superseded versions — historical reference only
- RFC 4091The Alternative Network Address Types (ANAT) Semantics for the Session Description Protocol (SDP) Grouping FrameworkObsoletedJune 2005proposed standardreplaced by RFC5245
- RFC 4092Usage of the Session Description Protocol (SDP) Alternative Network Address Types (ANAT) Semantics in the Session Initiation Protocol (SIP)ObsoletedJune 2005proposed standardreplaced by RFC5245
- RFC 5245Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer ProtocolsObsoletedApril 2010proposed standardreplaced by RFC8445, RFC8839
- RFC 6336IANA Registry for Interactive Connectivity Establishment (ICE) OptionsObsoletedJuly 2011proposed standardreplaced by RFC8839
This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 8839 (January 2021).