Here is my setup; Fax machine -> PSTN -> Cisco Voice GW -> IP cloud -> Asterisk. As on Cisco Voice GW, T.38 fax already configured on SIP protocol.
> Does your VoIP provider support t.38? > > Sent from my iPad > > On Jun 22, 2012, at 11:05 AM, Ahmed Munir <[email protected]> wrote: > > > Hi, > > > > I recently configured T.38 on Asterisk 10.4.2. When I send the fax to > Asterisk, it gives the errors as listed below; > > > > WARNING[25986]: app_fax.c:442 transmit_audio: channel > 'SIP/192.168.1.69-00000000' refused to negotiate T.38 > > WARNING[25986]: app_fax.c:174 span_message: WARNING T.30 ECM carrier > not found > > > > As in sip.conf the configuration is listed below; > > > > t38pt_udptl = yes,fec,maxdatagram=400 > > faxdetect = t38 > > > > And the rest are the standard configuration. > > > > Please advise to resolve this issue. > > > > -- > > Regards, > > > > Ahmed Munir Chohan > > > -- Regards, Ahmed Munir Chohan
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