Hi Dale,
    
  As you said, UAS should reject the call with 4xx response.
  Can you please elaborate, is there exist some kind of timer on UAS for 
precondition to be met.  
       
  If some one knows RFC/SPECIFICATION regarding this pleases reply.
  
Thanks and Regards,
Vineet

-----Original Message-----
From: Worley, Dale R (Dale) [mailto:[email protected]] 
Sent: Monday, October 04, 2010 9:45 PM
To: AGRAWAL, VINEET (VINEET); [email protected]
Subject: RE: Update time out

________________________________________
From: [email protected] 
[[email protected]] On Behalf Of AGRAWAL, VINEET 
(VINEET) [[email protected]]

Hi All,
          I am executing the SIP to Mobile call. The complete scenario is as 
below.
             SIP(UAC)                                    SWITCH                 
       MS

-------------->
INVITE with SDP(precondition not met)                               
---------------->
                                                                         PAGING
                                                                    
---------------->
                                                                         SETUP

<---------------
  183(Session Progress)
---------------->
   Prack
<---------------
   200OK(Prack)

Now Switch is waiting for UPDATE from SIP(UAC) for preconditions to be met. In 
my Case UAC is not sending the UPDATE msg.
I want to ask is there any timer for UPDATE on UAS forreceiving UPDATE so that 
it can release the call, because here the resources of SIP(UAC) are not getting 
released till 18 minutes.
_______________________________________________

The UAS is required to send a 1xx response every minute.  If the UAS does not 
want to wait any longer for the UPDATE, it can reject the call with any 4xx 
response.  It can do that at any time.

Dale

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