2013/11/5 Larry Moore <[email protected]> > On 5/11/2013 6:09 PM, Olivier wrote: > >> Hello, >> >> I've got an analog phone which is currently receiving unsollicited FAX >> calls from PSTN. >> >> For learning purpose, I'm preparing an Asterisk/SPA3102 setup that would >> let voice calls come in and out and translate incoming FAX calls to TIF >> files (forwarded through email)). >> >> My target setup is : >> >> PSTN <-- analog--> SPA3102 Line Port <-- SIP --> Asterisk <-- SIP --> >> SPA3102 Phone Port <-- analog --> Analog phone >> >> >> When a call comes in, analog phone rings. >> If callee answers and a fax tone is detected, then the incoming call is >> sent by Asterisk to ReceiveFAX application which translates incoming >> audio to TIF file. >> >> My setup is working ok when I'm using ReceiveFAX in fallback mode (with >> f option). >> >> Then I would like to improve my setup letting ReceiveFAX negociate T.38 >> with SPA3102. >> The trouble is SPA3102, as I configured it, seems to refuse T.38 >> negociation as I'm reading lines like this in Asterisk logs: >> >> == Using UDPTL CoS mark 5 >> [2013-11-05 10:36:50] WARNING[3061][C-00000007]: res_fax.c:1698 >> receivefax_t38_init: channel 'SIP/myline-0000000e' refused to negotiate >> T.38 >> >> My question is: >> Any hint on how to configure SPA3102 PSTN Line port so that it would >> accept to upgrade to T.38 ? >> >> >> > The SPA3102 only supports T.38 on the FXS port, the FXO port uses G711 for > a fax session. >
That explains why I couldn't find the option ;-) > The Grandstream HT503 supports T.38 on both the FXO and FXS ports. I never tried this one. How would you rate this product ? Is it easy to auto-provision an HT503 over TFTP or HTTP ? Is it easy to localize FXO/FXS setttings for non-US countries (those having played with a SPA3102 sure know what I'm thinking about) ? Do it T.38 implementation works ok with Asterisk ? > What problem do you have receiving a fax over G711? > I tried few calls in G711 fax mode and it worked OK but I rated T.38 as more reliable solution in the long run and in general. > > 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 >
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