Technical Summary:
The move of communications networks to SIP does not ameliorate
the need to support use cases for interworking and transporting
legacy PSTN-related information in SIP. This document defines
a package and associated semantics that allows SIP endpoints to
exchange information related to the ISDN UUS1 service.
Working Group Summary:
A WGLC was held from Nov-13-2013 to Nov-29-2013. As part of the
WGLC, reviews were performed by WG members (Andrew Allen, Atle
Monrad and Celine Serrut-Valette) and other members affirmed the
need to move ahead with the draft.
There was one area on which consensus was eventually acheived:
draft-ietf-cuss-sip-uui-isdn uses the value of "isdn-uui" for
the "purpose" header field parameter. Older versions of the
draft used the value "isdn-network". Consequently, there are
implementations that use "isdn-network" and doubtlessly, for
some valid reasons these implementations are not amenable to
change. Text was added to -06 version of the draft that
adequately addressed the issue of implicitly supporting "isdn-
network" in certain cases. The participants to the discussion
are okay with the proposed resolution.
Document Quality:
The document has been reviewed by multiple WG members and has
been affirmed by many more. There are no known issues with
document quality. There appear to be existing implementations
of the draft, especially since the issue requiring consensus
(described above) was specifically so that existing code can
continue to work.
Personnel:
Vijay K. Gurbani is the Document Shepherd. Alissa Cooper is
the Responsible Area Director.
Who is the Document Shepherd for this document? Who is the
Responsible Area Director? If the document requires IANA
experts(s), insert 'The IANA Expert(s) for the registries
in this document are <TO BE ADDED BY THE AD>.'