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txs a lot for your explanation steve<br>so, it should work w/o spandsp fairly fine if we do not have a bad connection. I see that this version has a lot of fixes related to t.38<br> but is the implementation already mature enough to guarantee a decent success rate with fax calls?<br><br><div>
<div> </div></div><br><br><div><hr id="stopSpelling">From: fborot@hotmail.com<br>To: asterisk-users@lists.digium.com<br>Subject: RE: T.38 passthru on 1.8.5<br>Date: Tue, 30 Aug 2011 13:15:19 -0400<br><br>
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will installing spandsp help with t.38 pass-through?<br><br><div>
<div> </div></div><br><br><div><hr id="ecxstopSpelling">From: fborot@hotmail.com<br>To: asterisk-users@lists.digium.com<br>Subject: RE: T.38 passthru on 1.8.5<br>Date: Tue, 30 Aug 2011 11:42:41 -0400<br><br>
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both endpoints use public Ips, I just changed the real ones for the privates ones to protect our ips but made a mistake and left the dest as a pub and the orig as private, my bad.<br>but for the record, both are public IPs, there is no nat and iptables is off<br><br> also, I see that the quintum sends a lot of these packages but asterisk sends only 1 or 2 to the other side.<br><br><br><br><div>
<div> </div></div><br><br><div><hr id="ecxstopSpelling">From: fborot@hotmail.com<br>To: asterisk-users@lists.digium.com<br>Subject: T.38 passthru on 1.8.5<br>Date: Tue, 30 Aug 2011 09:44:15 -0400<br><br>
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<div> Hello<br>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]<br><br>The call flow is:<br>quintum gateway --> asterisk --> Dialogic IMG 1010<br><br>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.<br><br>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<br><br>UDPTL (SIP/2345850624337933): packet to 192.30.189.146:12020 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br> UDPTL (SIP/): packet from 192.168.1.18:10260 (type 0, seq 0, len 6)<br><br>we have this settings on sip.conf<br>faxdetect = yes<br>t38pt_udptl = yes,maxdatagram=400 [I have tested with several combinations t38pt_udptl = yes;t38pt_udptl = yes,fec etc]<br><br>When we send the fax from the quintum to the Dialogic IMG the fax works 100% of the times.<br>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.<br>What else should I do?Any ideas/help is greatly appreciated<br><br>txs a lot<br>fborot<br><br></div></div> </div></div> </div></div> </div></div> </div></body>
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