Re: Sip query

Hi,
 
If the UAC is sending non-CANCEL requests (INFO, PRACK, UPDATE,
re-INVITE etc) before 200 OK it would use the Contact information.
 
Regards,
 
Christer

________________________________

From: [email protected] [mailto:[email protected]] On Behalf Of
[email protected]
Sent: 21. lokakuuta 2008 9:03
To: [email protected]; [email protected]
Subject: [Sip] Sip query



- 
A query on Sip call flow - 


*	Party sends out INVITE with SDP info to party B to make a call. 
*	Party B receives the message and sends back 183 Session progress
with SDP info to party A. In the 183 message, it does have Contact
information. 
*	Now, party A sends out CANCEL message to party B using contact
header information received in 183 message.


Will it be valid in SIP to use Contact information before receiving 200
OK message or not ? 
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