Re: Getting channel 'SIP/192.168.1.69-00000000' refused to negotiate T.38

[Ahmed Munir <ahmedmunir007@xxxxxxxxx>]

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@xxxxxxxxx> 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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