Technical Summary
This document presents an extension to the Session Initiation Protocol
(SIP)-Specific Event Notification mechanism (RFC 3265) for subscribing
to a homogeneous list of resources. Instead of the subscriber
sending a SUBSCRIBE for each resource individually, the subscriber
can subscribe to an entire list, and then receive notifications when
the state of any of the resources in the list changes.
Working Group Summary
The SIMPLE working group supported this capability strongly. The document
was transferred to the SIP working group because it needed a SIP option tag.
There was a delay while reviewing and revising its discussion of identity.
The Open Mobile Alliance has expressed a critical requirement for this
specification.
Protocol Quality
This protocol has been tested in SIMPLE interoperability sessions. It was
reviewed for the IESG by Allison Mankin.
Note to the RFC Editor
OLD:
Language tags are defined in RFC 1766 [6].
NEW:
Language tags are defined in RFC 3066 [6].
Change reference [6] to a reference to RFC 3066.