Seems like you have done your research and what you write seems reasonable.
It's difficult to give you an answer without having a complete ngrep trace.
However, you should also look at the Record-Route and Route headers...
----- Original Message -----
Sent: Tuesday, February 14, 2006 6:33
PM
Subject: [Serusers] UAC UDP to Proxy
TCP... Problem
Hi
everybody,
I have a UDP2TCP
problem with Ser. (0.9-4)
The UACs connected
to my SER Proxy are all UDP. When I use some carriers to connect them to PSTN
The Carrier Proxy / GW could talk UDP or TCP. It depends on the
destination.
Each time the
Carrier GW want to talk TCP, the contact field is correct and contains
the 'transport=tcp' mention. all seems to be correct and, after a complete
reading about this subject in the list, I trust that using t_relay() must do
the right translation and send response via TCP to the Carrier GW when this
one is transport=tcp declared.
If I Check the
message for an Ack or a BYE sent to the TCP GW the uri is correct
:
the transport=tcp
is added.
Request-Line: ACK sip:50033299848400@200.1xx.xx.xx:5060;transport=tcp
SIP/2.0
I have red that
this is sufficient to let SER understand that it must be sent via
TCP.
unfortunately,
this message is ent thru UDP.
May I force with a
t_relay_to_tcp ? As this case depends on the carrier dynamic routing it
could be complicated because of the need to know the destination to script
t_relay_to_tco(uri, port)... If anybody has the trick or any
advice...
Other thing
related, when TCP is the transport mode from the Carrier GW and I forward
staefully to the UAC (Asterisk) the call failed between Asterisk as UAC and
the carrier GW.
I wondering it was
because the Carrier Gw didn't receive an ACK TCP from my
server..
Well I'm
completely lost... as you can feel with my message...
I need Help.. But
don't cal me Harry ;)
Regards,
Christian Thomas
_______________________________________________
Serusers mailing
list
serusers@lists.iptel.org
http://lists.iptel.org/mailman/listinfo/serusers