Ahmed Munir
2012-Jun-22 15:05 UTC
[asterisk-users] Getting channel 'SIP/192.168.1.69-00000000' refused to negotiate T.38
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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20120622/111cb67b/attachment.htm>
James Sharp
2012-Jun-22 16:01 UTC
[asterisk-users] Getting channel 'SIP/192.168.1.69-00000000' refused to negotiate T.38
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 > > > -- > _____________________________________________________________________ > -- 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
Ahmed Munir
2012-Jun-22 17:05 UTC
[asterisk-users] Getting channel 'SIP/192.168.1.69-00000000' refused to negotiate T.38
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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20120622/586a3c23/attachment.htm>
Ahmed Munir
2012-Jun-26 14:55 UTC
[asterisk-users] Getting channel 'SIP/192.168.1.69-00000000' refused to negotiate T.38
The configuration I did in Cisco Voice GW is listed below; dial-peer voice 2852 voip description Incoming Fax Calls to Asterisk destination-pattern 329.. session protocol sipv2 session target ipv4:192.168.1.69 codec g711ulaw fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none Please advise to overcome this warning. On 06/22/2012 12:05 PM, Ahmed Munir wrote:> > > > 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. > > Apparently your configuration of the 'Cisco Voice GW' was not > successful, as it refused to accept a re-INVITE from Asterisk that > wanted to switch the SIP channel to T.38 mode. > -- > Kevin P. Fleming >> > 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20120626/502d1905/attachment.htm>