[asterisk-users] Getting channel 'SIP/192.168.1.69-00000000' refused to negotiate T.38

[Ahmed Munir]

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 <ahmedmunir007 at gmail.com> 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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