SIP "cause" URI Parameter for Service Number Translation
RFC 8119

Received changes through RFC Editor sync (created alias RFC 8119, changed title to 'SIP "cause" URI Parameter for Service Number Translation', changed abstract to 'RFC 4458 (regarding SIP URIs for applications) defines a "cause" URI parameter, which may appear in the Request-URI of a SIP request, that is used to indicate a reason why the request arrived to the User Agent Server (UAS) receiving the message.  This document updates RFC 4458 by creating a new predefined value for the "cause" URI parameter to cover service number translation for cases of retargeting due to specific service action leading to the translation of a called service access number.  This document also provides guidance, which was missing in RFC 4458, for using the "cause" URI parameter within the History-Info header field, since this use is mandatory in some IP networks' implementations.', changed pages to 12, changed standardization level to Informational, changed state to RFC, added RFC published event at 2017-03-15, changed IESG state to RFC Published, created updates relation between draft-mohali-dispatch-cause-for-service-number and RFC 4458)