Re: [Opalvoip-user] T.30 error 49 - spandsp
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From: Aron W. <aro...@gm...> - 2011-06-15 10:52:47
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T.38 standard says the callee has to send a reinvite to T.38. In your case I think it's the PSTN. If the callee does not support T.38, the reinvite is missing and the fax is sent via G711 audio. In that case, opal does incorrectly reports a failed fax transmission, but the fax was still transmitted correctly. I think it's a bug in opal. On 15.06.2011, at 12:43, Mahudeswaran wrote: > Remote party?? You mean the Gateway-1 or fax device. > I think in your case the fax was not received at the fax device end. Is it correct? > > And sometimes I observe like the fax sent successfully - success, 0 of 1 pages > > Points for clarification, > 1. Fax sent successfully but T.30 error 49 > 2. Fax sent successfully but success, 0 of 1 pages > > With the above two points, how to conclude whether a fax sent successfully or not? > > Regards > mahudeswaran > From: Aron Wieck [mailto:aro...@gm...] > Sent: Wednesday, June 15, 2011 3:51 PM > To: Mahudeswaran > Cc: opa...@li... > Subject: Re: [Opalvoip-user] T.30 error 49 - spandsp > > I have the same behavior if the remote party does not switch to T.38. > > On 15.06.2011, at 12:17, Mahudeswaran wrote: > > > Hi, > > I am testing with FaxOPAL sample to send T.38 fax. > Sometimes the fax sent successfully but the spandsp receives T.30 error 49 (The call dropped prematurely). > > Any reason why this behavior. > > Fax call flow: > FaxOPAL------>--Gateway-1----------PSTN cloud----------Gateway-2------------fax device > > Faxopal log: > 1:08.515 Media Patch:3316 spandsp_fax.cpp(1041) FaxCodec Ccfe7a9cc1_1 TIFF_T38::Terminate > 1:08.515 Media Patch:3316 spandsp_fax.cpp(800) FaxCodec Ccfe7a9cc1_1 SpanDSP entered Phase E: > Status=49 (The call dropped prematurely) > Bit Rate=9600 > Encoding=1 T.4 1d > Error Correction=0 > Tx Pages=0 > Rx Pages=-1 > Total Pages=1 > Image Bytes=49939 > Resolution=8031x7700 > Page Size=1728x1960 > Bad Rows=0 > Most Bad Rows=0 > Correction Retries=0 > > Regards > Mahudeswaran > > ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev_______________________________________________ > Opalvoip-user mailing list > Opa...@li... > https://lists.sourceforge.net/lists/listinfo/opalvoip-user > |