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RFC 7434
Title: Interworking ISDN Call Control User
Information with SIP
Author: K. Drage, Ed.,
A. Johnston
Status: Standards Track
Stream: IETF
Date: January 2015
Mailbox: keith.drage@alcatel-lucent.com,
alan.b.johnston@gmail.com
Pages: 17
Characters: 39276
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-cuss-sip-uui-isdn-11.txt
URL: https://www.rfc-editor.org/info/rfc7434
The motivation and use cases for interworking and transporting User-
to-User Information (UUI) from the ITU-T Digital Subscriber
Signalling System No. 1 (DSS1) User-user information element within
SIP are described in RFC 6567. As networks move to SIP, it is
important that applications requiring this data can continue to
function in SIP networks as well as have the ability to interwork
with this ISDN service for end-to-end transparency. This document
defines a usage (a new package called the ISDN UUI package) of the
User-to-User header field to enable interworking with this ISDN
service.
This document covers interworking with both public ISDN and private
ISDN capabilities, so the potential interworking with QSIG will also
be addressed.
The package is identified by the new value "isdn-uui" of the
"purpose" header field parameter.
This document is a product of the Call Control UUI Service for SIP Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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