The 200 OK for INVITE MUST be forwarded by the SIP server.  There is no
priority in forwarding 200 OK.   In real world scenario, once the SIP server
gets the first 200 OK for INVITE, it will send CANCEL to all the other legs.
So, the chances of getting multiple 200 OK for invite are low.


Thanks,
Neel


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Sreenath
Kulkarni
Sent: Tuesday, November 28, 2006 11:10 PM
To: Raj; SIP forum; [email protected]; [email protected]
Subject: Re: [Sip-implementors] Forking INVITE SIP message - regarding

Hi Raj,

This scenario can happen only in case of parallel forking. I don't beleive
that all the 2xx responces will reach the server at the same tume. If it so
then i think the server will forward the 2xx response on some priority
basis.

/Sree

----- Original Message ----
From: Raj <[EMAIL PROTECTED]>
To: SIP forum <[EMAIL PROTECTED]>; [email protected];
[email protected]
Sent: Tuesday, 28 November, 2006 10:47:02 PM
Subject: [Sip-implementors] Forking  INVITE SIP message - regarding

Hello,
   
  Consider the following situation.
   
              Adam wants to call Bob, let?s say that Bob is registered at
three locations, that is, at home, at head office and at his branch office.
Hence, when Adam makes a call, INVITE request is forked by the proxy and it
reaches all the three destinations. Hence, three 200 OK SIP response will be
sent back to Adam. 
   
              Consider the situation, when Bob?s friends answer the call at
all the three locations at the same time, what will happen? Either three
media channel will be established between them or which two will be
discarded.
   
              Can anyone please clear this?
   
  With regards
  Raj.

 
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