[Asterisk-Users] spandsp and certain (e.g. Canon) fax machines

Vladyslav vladk at azhelp.net
Thu Aug 26 03:41:59 MST 2004 

How to force * to write txfax console log into file ?

On Thu, 2004-08-26 at 13:24, Steve Underwood wrote:
> Hi,
> 
> If that is what you are running, you should be getting audio log files. 
> The have names like /tmp/fax-rx-audio-<date> and 
> /tmp/fax-tx-audio-<date>. I need a matching pair and the console log for 
> investigation.
> 
> Regards,
> Steve
> 
> 
> reseaux wrote:
> 
> >Dear Steve
> >	the first line of t30.c is
> >-------------
> >#define LOG_FAX_AUDIO
> >/*
> > * SpanDSP - a series of DSP components for telephony
> > *
> > * t30.c - ITU T.30 FAX transfer processing
> > *
> > * Written by Steve Underwood <steveu at coppice.org>
> > *
> > * Copyright (C) 2003 Steve Underwood
> > *
> >----------
> >I think is right uncomment but i dont see ant audio log under /tmp, do you 
> >think is possible no audio log?
> >Thanks in advance
> >Dimitri
> >
> >
> >On Thursday 26 August 2004 06:15, Steve Underwood wrote:
> >  
> >
> >>Hi,
> >>
> >>You are trying to receive from a Canon FAX machine. The problem I hope
> >>the change will fix is in sending *to* a Canon FAX machine. The user who
> >>found the bug in spandsp was trying to send to a Philips FAX machine.
> >>During negotiation the Philips sent a disconnect message, which is the
> >>same problem some people have with some Canon machines.
> >>
> >>It is not clear from your log why you have problems training the V.29
> >>modem. Can you enable logging, by uncommenting the first line in t30.c,
> >>and send me the audio log files you will get in your /tmp directory.
> >>
> >>Regards,
> >>Steve
> >>
> >>reseaux wrote:
> >>    
> >>
> >>>Dear Steve
> >>>       i have try the SpanDSP (ver.k and latest Asterisk cvs) with the
> >>>mod you have
> >>>write below, but nothing my Canon Fax still dont send the fax:
> >>>-----
> >>>   -- Executing RxFAX("Zap/35-1", "/home/user/testfax.tif") in new stack
> >>>Changed from phase 0 to 1
> >>>Slow carrier up
> >>>Slow carrier down
> >>>Slow carrier up
> >>>Slow carrier down
> >>>Start receiving document
> >>>Changed from phase 1 to 4
> >>>Sending ident
> >>>
> >>>      
> >>>
> >>>>>>CSI: 40 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
> >>>>>>            
> >>>>>>
> >>>DIS:
> >>>Preferred octets: 256
> >>>Can receive fax
> >>>Supported data signalling rates: V.27ter and V.29
> >>>R8x7.7lines/mm and/or 200x200pels/25.4mm OK
> >>>2D coding OK
> >>>Scan line length: 215mm
> >>>Recording length: A4 (297mm)
> >>>Receiver's minimum scan line time: 0ms at 3.85 l/mm: T7.7 = T3.85
> >>>R8x15.4lines/mm OK
> >>>Minimum scan line time for higher resolutions: T15.4 = T7.7
> >>>
> >>>      
> >>>
> >>>>>>DIS: 80 00 ce f0 80 80 01
> >>>>>>            
> >>>>>>
> >>>HDLC underflow in state 9
> >>>Changed from phase 4 to 3
> >>>Slow carrier up
> >>><<< TSI: 43 37 30 38 30 35 33 31 33 33 30 20 20 20 20 20 20 20 20 20 20
> >>>TSI without final frame tag
> >>>Remote fax gave TSI as: "0331350807"
> >>><<< DCS: 83 00 86 a0 00
> >>>DCS with final frame tag
> >>>In state 9
> >>>DCS:
> >>>Can receive fax
> >>>Selected data signalling rate: V.29, 9600bps
> >>>2D coding OK
> >>>Scan line length: 215mm
> >>>Recording length: A4 (297mm)
> >>>Minimum scan line time: 10ms
> >>>Get at 9600
> >>>Changed from phase 3 to 5
> >>>Fast carrier up
> >>>Coarse carrier frequency 1728.81 (11)
> >>>Fast carrier down
> >>>Fast carrier up
> >>>Coarse carrier frequency 1699.38 (86)
> >>>Fast carrier training failed
> >>>Fast carrier down
> >>>Fast carrier up
> >>>Coarse carrier frequency 1700.06 (4917)
> >>>Fast carrier down
> >>>Fast carrier up
> >>>Coarse carrier frequency 1699.33 (86)
> >>>Fast carrier training failed
> >>>Fast carrier down
> >>>Fast carrier up
> >>>Coarse carrier 1700.09 (4915)
> >>>Fast carrier down
> >>>Fast carrier up
> >>>Coarse carrier frequency 1699.33 (86)
> >>>Fast carrier training failed
> >>>Fast carrier down
> >>>Fast carrier up
> >>>Coarse carrier frequency 1700.07 (2924)
> >>>Fast carrier down
> >>>   -- Executing NoOp("Zap/35-1", "DIALEDTIME=") in new stack
> >>>   -- Executing NoOp("Zap/35-1", "ANSWEREDTIME=") in new stack
> >>>   -- Executing Hangup("Zap/35-1", "") in new stack
> >>>----
> >>>
> >>>I dont know how to debug more, you can give more help to trace the
> >>>problem? Thanks in advance.
> >>>Dimitri
> >>>
> >>>On Wednesday 25 August 2004 11:34, Steve Underwood wrote:
> >>>      
> >>>
> >>>>Hi,
> >>>>
> >>>>Several people have reported problems sending faxes from spandsp-0.0.1k
> >>>>to Canon FAX machines. A spandsp user had the same problem with another
> >>>>make of FAX machine, and traced the problem to a bug in the file t30.c
> >>>>of spandsp. Line 542 says s->t4.rx_file[0] where it should say
> >>>>s->t4.tx_file[0]. This fixes his problem, and I suspect it will also fix
> >>>>the Canon fax machine problem. Can someone having problems with Canon
> >>>>machines try this change, and tell me the result?
> >>>>
> >>>>Regards,
> >>>>Steve
> >>>>
> >>>>_______________________________________________
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> >>>>        
> >>>>
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-- 
Best regards
Vlad

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