Subject: [Sip] Query on 'new offer' during INVITE-PRACK transaction

From: OKUMURA Shinji <[email-masked]>
Date: Tue, 17 Dec 2002 20:45:00 +0900

Hi Folks,

I have one question concerning a new offer inclusion during a transaction of 
INVITE-PRACK at stated in the following figure.

Here my question goes, is it possible to include a new 'offer 2' within 200 
INVITE at line (5) and the corresponding 'answer 2' in ACK at line (6)? 

Thanks in advance for your kind response.

Caller                        Callee
   |                             |
   |                             |
   |(1) INVITE with offer 1      |
   |---------------------------->|
   |                             |
   |                             |
   |(2) 180 INVITE with answer 1 |
   |<----------------------------|
   |    Require: 100rel          |
   |                             |
   |                             |
   |(3) PRACK                    |
   |---------------------------->|
   |                             |
   |                             |
   |(4) 200 PRACK                |
   |<----------------------------|
   |                             |
   |                             |
   |(5) 200 INVITE with offer 2  |
   |<----------------------------|
   |                             |
   |                             |
   |(6) ACK with answer 3        |
   |---------------------------->|
   |                             |
   |                             |

Best regards,
_________________________________________________________
OKUMURA Shinji               E-mail:[email-masked]
_______________________________________________
Sip mailing list  https://www1.ietf.org/mailman/listinfo/sip
This list is for NEW development of the core SIP Protocol
Use [email-masked] for questions on current sip
Use [email-masked] for new developments on the application of sip