udptl.conf settings: [general] udptlstart=4000 udptlend=4998 udptlchecksums=no udptlfecentries = 3 udptlfecspan = 3 use_even_ports = yes T38FaxUdpEC = t38UDPRedundancy T38FaxMaxDatagram = 400
sip.conf settings: directmedia=yes faxdetect = no t38pt_udptl=yes,redundancy,maxdatagram=400 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Larry Moore Sent: Thursday, December 27, 2012 4:00 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] $100 Bounty: Level3/Asterisk/Adtran T.38 Pass-through On 28/12/2012 1:55 AM, Eric Wieling wrote: > We are offering $100 (paid via paypal or check) to the first person who > assists us in successfully sending and receiving faxes in the setup described > below. Offer expires Dec 31. We are a direct customer of Level 3, there is > no other carrier involved. > > What we want to work: > > Level 3 T.38 TN <-> MSX/Nextone SBC <-> Asterisk 1.8.18.1 <-> Adtran > NetVanta w/POTS and T.38 support. > > When we replace Asterisk with Kamailio faxes work fine. When we put Asterisk > there instead, then faxes fail nearly 100% of the time. > > I see the switch to T.38 in the Adtran debug logs. We can originate and > terminate T.38 calls in Asterisk using SendFax/ReceiveFax using T.38 so I'm > assuming I have my udptl.conf and sip.conf settings correct. > > > In udptl.conf try the following option ; ; Some VoIP providers will only accept an offer with an even-numbered ; UDPTL port. Set this option so that Asterisk will only attempt to use ; even-numbered ports when negotiating T.38. Default is no. use_even_ports = yes ; Looking at some old notes other options I set for some devices to be able to pass through T.38 in sip.conf were, directmedia=no t38pt_udptl=no May be worth checking the following; directrtpsetup=no Larry. -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
