SIP/IN Interworking BOF (sin)

Tuesday, August 1 at 1415-1515
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CHAIRS: L. Slutsman <lslutsman@att.com> 
        Hui-Lan Lu <hui-lan.lu@bell-labs.com> 

DESCRIPTION:

"The SIP/IN Interworking (SIN) BOF is intended to determine whether 
a working item on SIP/IN interworking is needed in the IETF, and, 
if so, whether the relevant work is to be carried in an existing 
working group or a new working group is to be created.

SIP/IN Interworking is considered here for the purpose of utilizing 
the existing Intelligent Network solutions in setting up an 
'IP_Host-to-Phone' call. The solution of this problem is essential 
to the industry in order to re-use the existing applications in the 
IP telephony environment: most telephony applications (800, PSTN VPN,
credit card calling, to name only a few) are based on IN. It is
essential then to re-use them in the IP telephony environment.

The proposed architecture employs the Software Switch (soft switch),
which appears to the PSTN (in this case, the IN service control 
point) as  a "normal" PSTN switch; it appears to the IP network as 
a SIP Server.

Thus, the soft switch must translate certain SIP messages into
appropriate Intelligent Network Application Part (INAP) queries to
service control; conversely, responses and instructions from the 
service control must be translated into (sequences of) SIP messages. 
In particular, 

1) IN Call Model must be interpreted for the SIP-based IP telephony
   environment;

2) IN messages must be mapped into (sequences of) SIP messages and 
   vice versa

3) IN parameters must be mapped into existing SIP parameters (or
   relevant SIP extensions must be defined) and vice versa

This work will need careful coordination with the ITU-T IN Questions.

AGENDA: 

Introduction
  - Chairs, 5 mins
Problem statement
  - I. Faynberg, 5 mins
ITU-T, 
  - D. Lebovits 5 mins
Implementation experience with SIP-enabled IN services
  - V. Gurbani, 5 mins
SIP/INAP interworking
  - H. Schulzrinne, 10 mins
Open discussion
  - all, 25 mins
What's next
  - all , 5 mins