{
  "draft": "draft-rosenberg-sip-app-media-tag-04",
  "doc_id": "RFC5688",
  "title": "A Session Initiation Protocol (SIP) Media Feature Tag for MIME Application Subtypes",
  "authors": [
    "J. Rosenberg"
  ],
  "format": [
    "TEXT",
    "HTML"
  ],
  "page_count": "7",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "IETF - NON WORKING GROUP",
  "abstract": "The caller preferences specification for the Session Initiation Protocol (SIP) allows a caller to express preferences that the call be routed to a User Agent (UA) with particular capabilities.  Similarly, a specification exists to allow a UA to indicate its capabilities in a registration.  Amongst those capabilities are the type of media streams the agent supports, described as top-level MIME types.  The 'application' MIME type is used to describe a broad range of stream types, and it provides insufficient granularity as a capability.  This specification allows a UA to indicate which application subtypes the agent supports. [STANDARDS-TRACK]",
  "pub_date": "January 2010",
  "keywords": [
    "SIP",
    "IMS"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC5688",
  "errata_url": "https://www.rfc-editor.org/errata/rfc5688"
}