{"draft":"draft-ietf-sipcore-rfc4244bis-12","doc_id":"RFC7044","title":"An Extension to the Session Initiation Protocol (SIP) for Request History Information","authors":["M. Barnes","F. Audet","S. Schubert","J. van Elburg","C. Holmberg"],"format":["ASCII","HTML"],"page_count":"36","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Session Initiation Protocol Core RAI","abstract":"This document defines a standard mechanism for capturing the history\r\ninformation associated with a Session Initiation Protocol (SIP)\r\nrequest.  This capability enables many enhanced services by providing\r\nthe information as to how and why a SIP request arrives at a specific\r\napplication or user.  This document defines an optional SIP header\r\nfield, History-Info, for capturing the history information in\r\nrequests.  The document also defines SIP header field parameters for\r\nthe History-Info and Contact header fields to tag the method by which\r\nthe target of a request is determined.  In addition, this\r\nspecification defines a value for the Privacy header field that\r\ndirects the anonymization of values in the History-Info header field.\r\nThis document obsoletes RFC 4244.","pub_date":"February 2014","keywords":["history-info","retarget","enhanced services","voicemail","automatic call distribution"],"obsoletes":["RFC4244"],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC7044","errata_url":"https:\/\/www.rfc-editor.org\/errata\/rfc7044"}