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An Offer/Answer Model with Session Description Protocol (SDP)

The information below is for an old version of the document that is already published as an RFC.
Document Type
This is an older version of an Internet-Draft that was ultimately published as RFC 3264.
Authors Henning Schulzrinne , Jonathan Rosenberg
Last updated 2020-01-21 (Latest revision 2002-02-28)
RFC stream Internet Engineering Task Force (IETF)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state RFC 3264 (Proposed Standard)
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD Allison J. Mankin
IESG note
Send notices to <>, <>
A new Request for Comments is now available in online RFC libraries.

        RFC 3264

        Title:      An Offer/Answer Model with Session Description
                    Protocol (SDP)
        Author(s):  J. Rosenberg, H. Schulzrinne
        Status:     Standards Track
        Date:       June 2002
        Pages:      25
        Characters: 60854
        Obsoletes:  2543

        I-D Tag:    draft-ietf-mmusic-sdp-offer-answer-02.txt


This document defines a mechanism by which two entities can make use
of the Session Description Protocol (SDP) to arrive at a common view
of a multimedia session between them.  In the model, one participant
offers the other a description of the desired session from their
perspective, and the other participant answers with the desired
session from their perspective.  This offer/answer model is most
useful in unicast sessions where information from both participants is
needed for the complete view of the session.  The offer/answer model
is used by protocols like the Session Initiation Protocol (SIP).

This document is a product of the Session Initiation Protocol Working
Group of the IETF.

This is now a Proposed Standard Protocol.

This document specifies an Internet standards track protocol for
the Internet community, and requests discussion and suggestions
for improvements.  Please refer to the current edition of the
"Internet Official Protocol Standards" (STD 1) for the
standardization state and status of this protocol.  Distribution
of this memo is unlimited.

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