<reference anchor="RFC3264" target="https://www.rfc-editor.org/info/rfc3264" xml:base="https://xml2rfc.tools.ietf.org/public/rfc/bibxml/reference.RFC.3264.xml">
<front>
<title>An Offer/Answer Model with Session Description Protocol (SDP)</title>
<author initials="J." surname="Rosenberg" fullname="J. Rosenberg"><organization/></author>
<author initials="H." surname="Schulzrinne" fullname="H. Schulzrinne"><organization/></author>
<date year="2002" month="June"/>
<abstract><t>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).  [STANDARDS-TRACK]</t></abstract>
</front>
<seriesInfo name="RFC" value="3264"/>
<seriesInfo name="DOI" value="10.17487/RFC3264"/>
</reference>