{"draft":"draft-jesske-dispatch-update3326-reason-responses-05","doc_id":"RFC6432","title":"Carrying Q.850 Codes in Reason Header Fields in SIP (Session Initiation Protocol) Responses","authors":["R. Jesske","L. Liess"],"format":["ASCII","HTML"],"page_count":"4","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"IETF - NON WORKING GROUP","abstract":"Although the use of the SIP (Session Initiation Protocol) Reason\r\nheader field in responses is considered in general in RFC 3326, its\r\nuse is not specified for any particular response code.  Nonetheless,\r\nexisting deployments have been using Reason header fields to carry\r\nfailure-related Q.850 cause codes in SIP responses to INVITE requests\r\nthat have been gatewayed to Public Switched Telephone Network (PSTN)\r\nsystems.  This document normatively describes the use of the Reason\r\nheader field in carrying Q.850 cause codes in SIP responses. \r\n[STANDARDS-TRACK]","pub_date":"November 2011","keywords":["[--------]","cause code"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC6432","errata_url":null}