Subject: [Sipping] sipping dialog package for CCBS/CCNR

From: "Poetzl, Joachim" <[email-masked]>
Date: Fri, 23 Aug 2002 14:47:30 +0200

Hello all,

for the time being no body is defined which could be used as filter which applies to the SUBSCRIBE Request. Only default behaviour ois described.

For supplementary services like CCBS/CCNR it would be helpful  if one can filter on specific events on specific dialogs in the SUBSCRIBE Request. The filter should allow a subscriber to ask for notification for a specific dialogs and for specific events / state changes.

-- the differentiation of certain dialogs which are used for voice communication could be done by the SDP information present in the UA.
-- the state change from confirmed to terminated is the most important information for CCBS/CCNR and this should merely be notified / be selectable. This will limit the  amount of messages and simplifies interworking 

Some similiar coments have been made on the list - have there been any changes yet?

Can we have some changes in draft-ietf-sipping-dialog-package to reflect these ideas? 

Thoughts? 

> Regards
> Joachim Pötzl
........................................................................................
Deutsche Telekom AG
T-Com Zentrale T38-13
Signalling, Gateways and Switching Systems
64307 DARMSTADT, GERMANY 
Phone:  +49 6151 83-2134
Fax:      +49 6151 83-4577
email:	[email-masked]
........................................................................................

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