If the 200 OK response for the INVITE sent is as you described, the ACK/BYE 
should have

Request URI as:
sip:pu1 at P1.com:5060

and Route headers as:
Route: <sip:pu2 at P2.com:5060;lr>
Route: <sip:pu3 at P3.com:5060;lr>
Route: <sip:u at UA.com:5060>

Refer to RFC 3261, Section "12.2.1.1 Generating the Request" under UAC Behavior.

Cheers,
Amit

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of sipit 2005
Sent: Tuesday, March 29, 2005 3:22 AM
To: [email protected]
Subject: [Sip-implementors] Doubt on loose routing 


 
Hi,
 
 
I have record-route set from 200 OK for INVITE as
 
Record-Route: <sip:pu3 at P3.com:5060;lr>
Record-Route: <sip:pu2 at P2.com:5060;lr>
Record-Route: <sip:pu1 at P1.com:5060>
Contact:<sip:u at UA.com:5060>
 
 
As the last record-route header doesn't have lr param(P1 might be expecting 
strict routing), in this combination can I send the ACK/BYE requests to sip:u 
at UA.com:5060 directly?

 
Is it possible to follow strict routing even though I get lr param?
 
While I was interoperating with sipgate.de (SIP express router) 
I got ftag param and lr param in 200 OK, I was trying to send ACK/BYE requests 
to 
record-route URI instead of final destination. Iam not getting any response for 
BYE.
 
Please help me.
 
regards,
SIPIT


                
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