Subject: RE: [Tsvwg] <rsvp-emeregncy> Appendix on "Emergency Flavors and corresponding mechanisms"

From: "Francois Le Faucheur \(flefauch\)" <[email-masked]>
Date: Wed, 7 Jun 2006 13:40:41 +0200

Hi Brian, 

>> > Could we get feed-back on whether this is a good idea and 
>> we should try
>> > include this in next rev?
>> 
>> I think its a good idea.
>> 
>> > 	* using "Resource-Priority" in SIP
>> 
>> This would only apply if the session control is SIP; 

Yes. We would want to explain that in some introductory text, at the
beginning of the Appendix.

>>also, 
>> it is not the
>> use of the Resource-Priority in SIP that provides the 
>> capability but the
>> Application-Level Resource-Priority Header Policy Element in 
>> RSVP, which
>> is more general, correct?

The use of Admission Priority and Application-Level Resource Priority
policy elements in RSVP is what allows the "prioritised access to
network resources" (ie allowing routers to admit emergency calls
preferentially) (as this is something implemented by the RSVP routers on
the RSVP signaling path -which is also the actual media path).

The use of the "Resource-Priority" in SIP is what allows the "Call
Queueing/Bumping" functionality (as this is implemented by SIP agents,
which are not on the RSVP signaling path).

Cheers

Francois

>> --brian
>> -- 
>> Brian F. G. Bidulock
>> [email-masked]
>> http://www.openss7.org/