{
  "draft": "draft-ietf-sipcore-keep-12",
  "doc_id": "RFC6223",
  "title": "Indication of Support for Keep-Alive",
  "authors": [
    "C. Holmberg"
  ],
  "format": [
    "TEXT",
    "HTML"
  ],
  "page_count": "18",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Session Initiation Protocol Core",
  "abstract": "This specification defines a new Session Initiation Protocol (SIP) Via header field parameter, \"keep\", which allows adjacent SIP entities to explicitly negotiate usage of the Network Address Translation (NAT) keep-alive mechanisms defined in SIP Outbound, in cases where SIP Outbound is not supported, cannot be applied, or where usage of keep-alives is not implicitly negotiated as part of the SIP Outbound negotiation. [STANDARDS-TRACK]",
  "pub_date": "April 2011",
  "keywords": [
    "SIP",
    "STUN",
    "outbound",
    "NAT traversal"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC6223",
  "errata_url": null
}