As I already said, I had to move from ISDN with misdn to analogue with
tdm400.

Then I had to turn off debugging, as probably you could remember: enabling
debugging
brought to line missing pages (timing issues); disabling debugging turned
off the problem.

Andrea

> -----Messaggio originale-----
> Da: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] Per conto di 
> Steve Underwood
> Inviato: sabato 29 marzo 2008 5.01
> A: Users Mailing List - Non-Commercial Discussion
> Oggetto: Re: [Callweaver-users] Cannot manage T38Gateway to work (fwd)
> 
> Marek Zelem wrote:
> >       Hi
> >
> >   I have changed NSE to REINVITE on ATA. Now there is word 
> 're-invite' 
> > in logs, so something changed. But fax is still not working.
> >
> > I did both directions.
> >
> > Receiving fax from ISDN CAPI --> ATA --> fax:
> >       http://marek.terminus.sk/cw/full_2_in.gz
> >       
> > http://marek.terminus.sk/cw/callweaver_incoming_fax_2_in.tcpdump.gz
> >
> > Sending fax from Fax machine --> ATA --> ISDN CAPI
> >       http://marek.terminus.sk/cw/full_2_out.gz
> >       
> > http://marek.terminus.sk/cw/callweaver_incoming_fax_2_out.tcpdump.gz
> >
> > When I was sending fax I observer interesting fact. I have 
> asterisk on 
> > receiving side with NVBackgroundDetect but call was not detected as 
> > fax. I did the same fax sending before but instead of 
> callweaver I had asterisk.
> > In that case receiving asterisk detected fax with 
> NVBackgroundDetect. 
> > I have filling I cannot get rid of that there is signal somehow 
> > degraded when using callweaver. Also when I tried 
> BackgroundDetect on 
> > callweaver - dtmf and fax detection was very very unreliable. With 
> > NVBackgroundDetect and asterisk it works 100% reliable. 
> Same machine, 
> > same environment, same configuration, only one difference: with 
> > asterisk I use mISDN, with Callweaver CAPI.
> >
> A lot of people seem to have trouble with mISDN and CAPI on 
> various machines, both with Asterisk and Callweaver. ISDN on 
> Linux is a mess. It could be the signal is stuttering at 
> times, causing your DTMF detection issues. However, the small 
> amount of audio from the ISDN channel logged as RTP packets 
> in your files looks OK.
> 
> The receiving FAX looks fine until the point where things switch into
> T.38 mode. From then on nothing is received from the 
> Callweaver box, except a final SIP disconnect when the PSTN 
> call drops. Looking at the Callweaver log, it seems the T.38 
> data is correctly received and by T38Gateway(), and forwarded 
> as audio to the FAX machine. However, it looks like nothing 
> is received from the FAX machine. The fragment of audio sent 
> as RTP before the T.38 changeover looks OK, though. I wonder 
> if there is some issue between T38Gateway() and the CAPI 
> channel driver?
> 
> The sending case looks stranger. No RTP or UDPTL is sent by 
> the Callweaver box at all. The initial negotiation goes OK, 
> but the CAPI channel seems to immediately foul up with 
> endless repeating of:
> 
> ERROR[3059407792] chan_capi.c: Could not write to pipe for ISDN1#02
> 
> Maybe we have chan_capi problems here, rather than T.38 gateway ones.
> Are there any other chan_capi user who can comment?
> 
> Steve
> 
> 
> _______________________________________________
> Callweaver-users mailing list
> [email protected]
> http://lists.callweaver.org/mailman/listinfo/callweaver-users
> 

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