Deepesh D
2010-Feb-27 01:29 UTC
[asterisk-users] "Unexpected message received" when receiving Fax
Hello, I have been trying to setup asterisk 1.6.2.0 to receive fax. I have two SIP trunks connected to asterisk. One of them is a VoIP service provider and the other is an audiocodes gateway connected with pstn and fax lines. I am able to receive faxes on the DID numbers provided by the VoIP service provider, but I am not able to receive fax through the fax lines connected through audiocodes. udptl debug shows T.38 packets coming from the audiocodes, but the line gets disconnected with an error phase_e_handler: Error transmitting fax. result=13: Unexpected message received. What could be the reason for this error? Is this a problem with misconfiguration of audiocodes or asterisk. I have the following t.38 settings in sip.conf 't8pt_udptl=yes,redundancy,maxdatagram=400' and the dialplan I use is exten => s,1,Answer exten => s,2,Wait(3) exten => s,3,ReceiveFAX(filename) Thank you