{
  "draft": "draft-ietf-sip-refer-feature-param-01",
  "doc_id": "RFC4508",
  "title": "Conveying Feature Tags with the Session Initiation Protocol (SIP) REFER Method",
  "authors": [
    "O. Levin",
    "A. Johnston"
  ],
  "format": [
    "TEXT",
    "HTML"
  ],
  "page_count": "6",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Session Initiation Protocol",
  "abstract": "The SIP \"Caller Preferences\" extension defined in RFC 3840 provides a mechanism that allows a SIP request to convey information relating to the originator's capabilities and preferences for handling of that request.  The SIP REFER method defined in RFC 3515 provides a mechanism that allows one party to induce another to initiate a SIP request.  This document extends the REFER method to use the mechanism of RFC 3840.  By doing so, the originator of a REFER may inform the recipient as to the characteristics of the target that the induced request is expected to reach. [STANDARDS-TRACK]",
  "pub_date": "May 2006",
  "keywords": [
    "caller preferences"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [
    "RFC8217"
  ],
  "see_also": [],
  "doi": "10.17487/RFC4508",
  "errata_url": null
}