[Serusers] Doubt on loose routing

[sipit 2005]

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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