{"draft":"draft-ietf-sipcore-keep-12","doc_id":"RFC6223","title":"Indication of Support for Keep-Alive","authors":["C. Holmberg"],"format":["ASCII","HTML"],"page_count":"18","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Session Initiation Protocol Core RAI","abstract":"This specification defines a new Session Initiation Protocol (SIP)\r\nVia header field parameter, \"keep\", which allows adjacent SIP\r\nentities to explicitly negotiate usage of the Network Address\r\nTranslation (NAT) keep-alive mechanisms defined in SIP Outbound, in\r\ncases where SIP Outbound is not supported, cannot be applied, or\r\nwhere usage of keep-alives is not implicitly negotiated as part of\r\nthe 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}