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Liaison Statement: OMA LS 178 on XCAP diff-event

Submission Date: 2007-03-01
From: OMA (Dean Willis)
To: IETF SIP WG (sip@ietf.org)
Cc:drage@alcaltel-lucent.com
fluffy@cisco.com
dean.willis@softarmor.com
Response Contact: Pavel Dostal
Antti Laurila
Technical Contact: Pavel Dostal
Antti Laurila
Purpose: For comment
Deadline: 2007-03-23 Action Taken
Attachments: OMA LS 178 on XCAP Diff Event
Body:
1	Overview

This liaison seeks IETF SIP WG for the opinion on the XCAP Diff 
Event Package as drafted in draft-urpalainen-sip-xcap-diff-event-00.

2	Proposal

OMA PAG WG deals with a requirement to enable subscription for
notification of changes in XCAP resource not only to single 
document but also to single XCAP component (XML element or attribute).

This can not be achieved using draft-ietf-sip-xcap-config because the 
subscription in this case is allowed only to single document or 
folder.

A new SIP event package “xcap-diff� is defined in
draft-urpalainen-sip-xcap-diff-event-00. 
This event package allows subscription to a set of XCAP 
resources where resources can be either folder or document 
or component identified by node selector. 

As this functionality fits to current requirements, OMA PAG WG 
is considering adopting draft-urpalainen-sip-xcap-diff-event-00 
as the solution for XCAP clients to receive partial changes of 
the XCAP resources.

3	Requested Action(s)

OMA PAG WG kindly requests IETF SIP WG on the opinion on the 
XCAP Diff Event Package as drafted in 
draft-urpalainen-sip-xcap-diff-event-00 and its expected 
progress.

4	Conclusion

OMA PAG WG would like to thank IETF SIP WG for their kind 
consideration and response to this liaison request and look 
forward to future opportunities to work together.