{
  "draft": "draft-ietf-mmusic-sdp-offer-answer-02",
  "doc_id": "RFC3264",
  "title": "An Offer/Answer Model with Session Description Protocol (SDP)",
  "authors": [
    "J. Rosenberg",
    "H. Schulzrinne"
  ],
  "format": [
    "TEXT",
    "HTML"
  ],
  "page_count": "25",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Multiparty Multimedia Session Control",
  "abstract": "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]",
  "pub_date": "July 2002",
  "keywords": [
    "SDP",
    "Session Description Protocol",
    "application-layer",
    "multimedia",
    "multicast",
    "unicast"
  ],
  "obsoletes": [
    "RFC2543"
  ],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [
    "RFC6157",
    "RFC8843",
    "RFC9143"
  ],
  "see_also": [],
  "doi": "10.17487/RFC3264",
  "errata_url": "https://www.rfc-editor.org/errata/rfc3264"
}