{"draft":"draft-ietf-sipcore-reason-q850-loc-07","doc_id":"RFC8606","title":"ISDN User Part (ISUP) Cause Location Parameter for the SIP Reason Header Field","authors":["R. Jesske"],"format":["ASCII","HTML"],"page_count":"7","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Session Initiation Protocol Core","abstract":"The SIP Reason header field is defined to carry ISUP (ISDN User Part)\r\ncause values as well as SIP response codes.  Some services in SIP\r\nnetworks may need to know the ISUP location where the call was\r\nreleased in the PSTN (Public Switched Telephone Network) to correctly\r\ninterpret the reason of release.  This document updates RFC 3326 by\r\nadding a location parameter for this purpose.","pub_date":"June 2019","keywords":["Reason","Call","Location"],"obsoletes":[],"obsoleted_by":[],"updates":["RFC3326"],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC8606","errata_url":null}