Hello
We want to implement T.38 passthru with asterisk 1.8.5 [Asterisk 1.8.5.0 built
by root @ asterisk1-8.labdomain.com on a x86_64 running Linux on 2011-08-26
21:31:22 UTC]
The call flow is:
quintum gateway --> asterisk --> Dialogic IMG 1010
the call starts as a voice call, the remote fax picks up and we hear the fax
tone, the we see the re-invite from the IMG asking for t.38, the RE-Invite is
passed back to the user side [quintum gateway] whcih reply with 200 OK with
t.38 and the nothing else happens. After 20 secs of "inactivity" the quintum
sends another Invite with voice only and then a BYE.
We do see that the quintum sends a lot of messages like this from the quintum's
IP [192.168.1.18] but we do not see that asterisk sends the packages to the
destination
UDPTL (SIP/2345850624337933): packet to 192.30.189.146:12020 (type 0, seq 0,
len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)
we have this settings on sip.conf
faxdetect = yes
t38pt_udptl = yes,maxdatagram=400 [I have tested with several combinations
t38pt_udptl = yes;t38pt_udptl = yes,fec etc]
When we send the fax from the quintum to the Dialogic IMG the fax works 100% of
the times.
I enabled fax set debug on and udptl set debug on but the console does not show
almost anything but the udptl packets shown above.
What else should I do?Any ideas/help is greatly appreciated
txs a lot
fborot
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