Session Initiation Protocol Usage of the Offer/Answer Model
RFC 6337, “Session Initiation Protocol Usage of the Offer/Answer Model”, is an Informational document published in August 2011 by S. Okumura, T. Sawada, P. Kyzivat. The canonical text is published by the RFC Editor.
Abstract
The Session Initiation Protocol (SIP) utilizes the offer/answer model to establish and update multimedia sessions using the Session Description Protocol (SDP). The description of the offer/answer model in SIP is dispersed across multiple RFCs. This document summarizes all the current usages of the offer/answer model in SIP communication. This document is not an Internet Standards Track specification; it is published for informational purposes.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
The canonical text of RFC 6337 is hosted at rfc-editor.org. Available in TXT,HTML.
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