Hi, I've installed Asterisk t38passthrough branch and I'm using one Grandstream ATA to connect Asterisk to a Fax machine. Every time I send a fax, it gets sent using codec G711, and never T.38. I added the following parameters in the [general] section as well as in device configurations: t38pt_udptl = yes t38pt_rtp = yes t38pt_tcp = yes I think that's the only thing that is needed to do to enable T.38 pass through... Why does Asterisk keeps sending in G711? Any help? Regards, Ricardo.
Perhaps a stupid suggestion... but did you make sure that the ATA had the T38 selected in the GUI? bp On 8/24/06, Ricardo Carvalho <rcarvalho@iric.up.pt> wrote:> > Hi, > > I've installed Asterisk t38passthrough branch and I'm using one > Grandstream ATA to connect Asterisk to a Fax machine. Every time I send > a fax, it gets sent using codec G711, and never T.38. I added the > following parameters in the [general] section as well as in device > configurations: > > t38pt_udptl = yes > t38pt_rtp = yes > t38pt_tcp = yes > > > I think that's the only thing that is needed to do to enable T.38 pass > through... > Why does Asterisk keeps sending in G711? Any help? > > Regards, > > Ricardo. > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >-------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060824/dcd6a510/attachment.htm
Finally it's working! I was doing everything well, the problem was that neither the latest branch of Asterisk-t38 worked (http://svn.digium.com/svn/asterisk/team/group/t38passthrough/), neither the patched version of Asterisk 1.2.7. Only the branch of Asterisk-t38 made from source version 1.2.4 works for me. If anyone deployed with success those versions that I didn't make to work, please tell me! Regards, Ricardo. Ricardo Carvalho wrote:> Hi, > > I've installed Asterisk t38passthrough branch and I'm using one > Grandstream ATA to connect Asterisk to a Fax machine. Every time I > send a fax, it gets sent using codec G711, and never T.38. I added the > following parameters in the [general] section as well as in device > configurations: > > t38pt_udptl = yes > t38pt_rtp = yes > t38pt_tcp = yes > > > I think that's the only thing that is needed to do to enable T.38 pass > through... > Why does Asterisk keeps sending in G711? Any help? > > Regards, > > Ricardo. > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >
Hi Ricardo, On a 1.2.4 with the T.38 patch, I tried both t38pt_udptl = yes t38pt_rtp = yes t38pt_tcp = yes and t38pt_udptl = yes t38pt_rtp = no t38pt_tcp = no but still got " ...chan_sip.c:3716 process_sdp: Unknown SDP media type in offer: image 5144 UDPTL t38" Warnings I tried it on Kapanga Softphone as suggested, and I'll tried it on Grandstream ATA's later. Are there anything I'm missing? Thank you. Andy On 8/24/06, Ricardo Carvalho <rcarvalho@iric.up.pt> wrote:> Hi, > > I've installed Asterisk t38passthrough branch and I'm using one > Grandstream ATA to connect Asterisk to a Fax machine. Every time I send > a fax, it gets sent using codec G711, and never T.38. I added the > following parameters in the [general] section as well as in device > configurations: > > t38pt_udptl = yes > t38pt_rtp = yes > t38pt_tcp = yes > > > I think that's the only thing that is needed to do to enable T.38 pass > through... > Why does Asterisk keeps sending in G711? Any help? > > Regards, > > Ricardo. > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >