Not very sure what your question is..
comments inline...
 
Rama

Chauhan Bhavik-A20762 <[EMAIL PROTECTED]> wrote:


Resending it. Any comments on this?

Thanks,
Bhavik

-----Original Message-----
From: Chauhan Bhavik-A20762 
Sent: Tuesday, May 24, 2005 10:53 AM
To: [email protected]
Subject: 100rel and early-session option tags (RFC 3959)



Hi,

With Reference to RFC 3959 section 6,

I think "early-session" option tag must be accompanied "100rel" if it is in
"Require" header
to indicate "Reliability of Provisional Response" support as I didn't find
any relationship cited 
in RFCs. 


>>> 'early-session' option tag comes in the offer to indicate that it 
>>> understand early session to be part of the session description if its 
>>> offered back... not sure what do u mean by '100rel' ?


Does "early-session" implicitly indicate that?

>>> same as above..

If not then,

1.
A B
---INVITE(Require: early-session) ---->


(INVITE is without 100rel option)
As 100rel is not there what will be response from B?


2. 
A
B
----INVITE(Supported: early-session) with OFFER ---->
<---- 180 Reliable with early-offer & ANSWER----


(INVITE is without 100rel option )
What will be response from A as no 100rel supported?


>>>  UAS will send offer & answer with 183 (session progress) with the early 
>>> session SDP for early media.... once A receives that it will send a PRACK 
>>> ack'ing the receipt for the SDP with Content Disposition of 'early 
>>> session'..



Regards,
Bhavik Chauhan

Motorola India Eletronics Pvt Ltd.


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