The configuration I did in Cisco Voice GW is listed below;<br><br>dial-peer voice 2852 voip <br>description Incoming Fax Calls to Asterisk <br>destination-pattern 329.. <br>session protocol sipv2 <br>session target ipv4:192.168.1.69 <br>
codec g711ulaw <br>fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none<br><br>Please advise to overcome this warning.<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 06/22/2012 12:05 PM, Ahmed Munir wrote:<br>
><br>
> Here is my setup;<br>
><br>
> Fax machine -> PSTN -> Cisco Voice GW -> IP cloud -> Asterisk. As on<br>
> Cisco Voice GW, T.38 fax already configured on SIP protocol.<br>
<br>
Apparently your configuration of the 'Cisco Voice GW' was not<br>
successful, as it refused to accept a re-INVITE from Asterisk that<br>
wanted to switch the SIP channel to T.38 mode.<br>
--<br>
Kevin P. Fleming<br>
</blockquote><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">> Does your VoIP provider support t.38?<br>
><br>
> Sent from my iPad<br>
><br>
> On Jun 22, 2012, at 11:05 AM, Ahmed Munir <<a href="mailto:ahmedmunir007@gmail.com">ahmedmunir007@gmail.com</a>> wrote:<br>
><br>
> > Hi,<br>
> ><br>
> > I recently configured T.38 on Asterisk 10.4.2. When I send the fax to<br>
> Asterisk, it gives the errors as listed below;<br>
> ><br>
> > WARNING[25986]: app_fax.c:442 transmit_audio: channel<br>
> 'SIP/192.168.1.69-00000000' refused to negotiate T.38<br>
> > WARNING[25986]: app_fax.c:174 span_message: WARNING T.30 ECM carrier<br>
> not found<br>
> ><br>
> > As in sip.conf the configuration is listed below;<br>
> ><br>
> > t38pt_udptl = yes,fec,maxdatagram=400<br>
> > faxdetect = t38<br>
> ><br>
> > And the rest are the standard configuration.<br>
> ><br>
> > Please advise to resolve this issue.<br>
> ><br>
> > --<br>
> > Regards,<br>
> ><br>
> > Ahmed Munir Chohan<br>
> ><br>
><br></blockquote><div><br> </div></div>-- <br>Regards,<br><br>Ahmed Munir Chohan<br><br><br>