[Serusers] PDT module

I have been trying to use the pdt module, and the idea seems excellent. I have the database up and running, and can enter codes. Things seem to be translated correctly, but the INVITE request is not complete, and the call always fails. Compare the following from the log file: ACC: transaction answered: method=INVITE, i-uri=sip:839503018@sip.dev.inmarsat.com, o-uri=sip:3018@sip.prodec.tv ACC: transaction answered: method=INVITE, i-uri=sip:3018@sip.prodec.tv, o-uri=sip:3018@sip.prodec.tv, call_id=9C912086-C197-484D-8AD2-E261F1A3234A(a)161.30.94.150, from=Dave Bath <sip:admin@sip.dev.inmarsat.com>;tag=2122510239, code=487 The first is dialing using the pdt module, with my code 8+395+0+<number> the second is directly dialing the full external domain address. The first fails, and I eventually get a timeout, the second connects no problem. Excerpts from the ser.cfg are: # loose-route processing if (loose_route()) { t_relay(); break; }; # we record-route all messages -- to make sure that # subsequent messages will go through our proxy; that's # particularly good if upstream and downstream entities # use different transport protocol record_route(); # label all transaction for accounting setflag(1); # Make sure we check the prefix tables prefix2domain(); before the if (uri==myself) statement. I have been bashing my head around and around for so long now, do you have any ideas?! Many many thanks in advance, Dave ------------------------------------- Dave Bath Inmarsat LTD Global Satellite Communications www.inmarsat.com <http://www.inmarsat.com/> Regional BGAN Engineer 07736 232085 NOTE: The information contained in this email is intended for the named recipients only, it may be privileged and confidential. If you are not the intended recipient, you must not copy distribute or take any action in reliance upon it. No warranties or assurances are made in relation to the safety and content of this email and any attachments. No liability is accepted for any consequences arising from it