Subject: [Sipping] Initiation of work on interworking of BICC and ISUP with SIP

From: "Greg Ratta" <[email-masked]>
Date: Wed, 30 May 2001 16:22:24 -0400

This message was agreed to at ITU-T Study Group 11 meeting 
(Geneva, May 2001) and is being transmitted on behalf of Yukio 
Hiramatsu, Chairman of ITU-T SG 11. For further technical 
clarification, contact the Rapporteur for Q6/11 (Keith Mainwaring, 
Tel: + <color><param>0100,0100,0100</param>46 70 605 9076</color>, { HYPERLINK mailto:[email-masked] }<color><param>0100,0100,0100</param>[email-masked]{ HYPERLINK mailto:[email-masked] <bigger>}<smaller>) or the Rapporteur for 
Q11/11 (Steve Norreys, Tel: +44 207 843 5189, 
[email-masked]).

<FontFamily><param>Courier</param>ITU-T Study Group 11 has initiated a work 
program to define signalling requirements for 
the interworking of SIP with BICC (Bearer 
Independent Call Control) and with ISUP (ISDN 
User Part of Signalling System 7).  It is the 
understanding of SG11 that the IETF will 
continue to focus its energy on SIP protocol 
development and would look to the ITU-T to 
develop interworking signalling requirements and 
protocols.

SG 11 has scheduled three meetings before 
February 2002 to advance its efforts in this 
subject.  A strong consensus exists among the 
participants of this Study Group that a common 
approach should be taken for both BICC and ISUP.

SG 11 plans to keep the IETF informed of any 
requirements for extensions to SIP that may 
develop from its studies and looks forward to 
further communications as this study progresses.

<nofill>
Greg Ratta, Vice Chairman, ITU-T SG 11, Signalling requirements and protocols

Lucent Technologies
Tel: +1 732 332 5174, Fax: +1 732 949 1196, [email-masked]

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