I'm curious about your recommendation to use a long (600 sec) media/RTP timeout value in the sofia profile. Is this a specific need for the Audiocodes device or just generally better for T.38? I'm assuming you are referring to the "rtp-timeout-sec" parameter? I'm using FreeSwitch as a media proxy to a T38 provider and have had decent success, but usually have problems with longer faxes (8+ pages) and am wondering if this setting might help? Thanks, Dave Redmore ----- Original Message ----- From: "Kristian Kielhofner" <kris@kriskinc.com> To: "FreeSWITCH Users Help" <freeswitch-users@lists.freeswitch.org> Sent: Tuesday, November 16, 2010 9:39:22 AM GMT -06:00 US/Canada Central Subject: Re: [Freeswitch-users] T.38 and Audiocodes or Patton gateway Tim, I've have good experiences with the MP-20x series using T.38 with FreeSWITCH. On the AudioCodes: Make sure your T.30 and T.38 redundancy settings are at least "1". Make sure ECM is disabled. Use the latest 2.6 firmware (not 3.x). In FreeSWITCH: Make sure ECM is disabled. Make sure to have a very high (600 seconds seems ideal) media/rtp timeout parameter on the Sofia profile for the AudioCodes device. On the fax machine: Make sure ECM is disabled. Disable Super G3 or anything higher than 14.4. On Mon, Nov 15, 2010 at 1:08 PM, Tim St. Pierre <fs-list@communicatefreely.net> wrote:
Hello,
I am trying to get a reliable fax setup working.
I have set up a nice fax receiver mechanism with mod_spandsp and it works very well when I send a fax using a Linksys SPA2102
I have poor results with Audiocodes MP202B, and can't get anything to work with a Patton M-ATA
I have a number of Audiocodes MP202B in service and would rather not replace them if I can avoid it.
In each case, the fax fails with "communications error" on the sending machine, and "Call hungup prematurely" on the SpanDSP side.
There aren't too many knobs on the gateways. Are there any knobs in mod_spandsp that might help this condition? Anyone else have any experience with these devices?
Thanks!
-Tim
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-- Kristian Kielhofner http://www.astlinux.org http://blog.krisk.org http://www.star2star.com http://www.submityoursip.com http://www.voalte.com _______________________________________________ FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org