{
  "number": 4411,
  "title": "Extending the Session Initiation Protocol (SIP) Reason Header for Preemption Events",
  "authors": [
    "J. Polk"
  ],
  "published": "2006-02",
  "status": "Proposed Standard",
  "stream": "IETF",
  "area": "rai",
  "working_group": "sipping",
  "pages": 22,
  "formats": [
    "TXT",
    "HTML"
  ],
  "abstract": "This document proposes an IANA Registration extension to the Session Initiation Protocol (SIP) Reason Header to be included in a BYE Method Request as a result of a session preemption event, either at a user agent (UA), or somewhere in the network involving a reservation-based protocol such as the Resource ReSerVation Protocol (RSVP) or Next Steps in Signaling (NSIS). This document does not attempt to address routers failing in the packet path; instead, it addresses a deliberate tear down of a flow between UAs, and informs the terminated UA(s) with an indication of what occurred. [STANDARDS-TRACK]",
  "keywords": [
    "Resource-Priority",
    "preempt",
    "preempted",
    "Q.850",
    "preconditions"
  ],
  "draft": "draft-ietf-sipping-reason-header-for-preemption-04",
  "doi": "10.17487/RFC4411",
  "urls": {
    "html": "https://rfc.dk/rfc4411/",
    "text": "https://rfc.dk/rfc4411.txt",
    "rfc_editor": "https://www.rfc-editor.org/rfc/rfc4411",
    "datatracker": "https://datatracker.ietf.org/doc/rfc4411/"
  },
  "text_modified": "2006-02-22T22:50:06Z"
}