[asterisk-users] Fax with Asterisk + Hylafax

[Jose Limeres]

I searched extensively on this and did not find anything conclusive except
the general understanding that on TDM cards every instalation is different
whereas for BRI /PRI it should work.

As for the config, Asterisk just works perfectly well with voice
conversations over the FXO line. I add one IAX extension in * for the
IAXModem and then in the IAXmodem configure the default modem as the one
that is registered in *. If I make a Fax call to my mobile, it rings and I
can hear the Fax on the other side. So, the problem I believe is in the
negotiation/sinchronization where something is broken at some point.

I would like to know wether it is possible to solve this adjusting some
parameter in some config file or I should just forget it and use a digital
line instead.

Thanks,
Jose L.

CLI>
    -- Accepting AUTHENTICATED call from 127.0.0.1:
       > requested format = slin,
       > requested prefs = (),
       > actual format = alaw,
       > host prefs = (alaw),
       > priority = mine
    -- Executing [956855858 at default:1] Dial("IAX2/200-1",
"Zap/g1/956855858") in new stack
    -- Called g1/956855858
    -- Zap/4-1 answered IAX2/200-1
    -- Hungup 'Zap/4-1'
  == Spawn extension (default, 956855858, 1) exited non-zero on 'IAX2/200-1'
    -- Hungup 'IAX2/200-1'
CLI>

> faxstat -s
JID    Pri    S    Owner    Number         Pages    Dials     TTS
Status
35     126  S    root         956855858    0:1          1:12       11.19
No carrier detected



On 15/04/07, Steve Totaro <stevetotaro at hotmail.com> wrote:
>
> Yuan LIU wrote:
> >> From: "Jose Limeres" <jlimeres at gmail.com>
> >> Date: Sun, 15 Apr 2007 19:10:58 +0100
> >>
> >> Hi,
> >> Anybody lucky with this config inside an Asterisk server for dealing
> >> with
> >> FAX ?
> >>
> >> FXO_LINE   ----> ASTERISK 1.4.2 ---> IAXMODEM ------>  HYLAFAX
> >> TDM400P            ZAPTEL
> >> 4.3.1
> >> 1 FXO port          1.41
> >
> > Search Asterisk forum.  Yes, somebody posted positive results.
> >
> > Yuan Liu
> I have had great results via PRI -> Asterisk -> IAXModem -> Hylafax
>
> Post your log results and configs.
>
> Thanks,
> Steve
>
> >
> >>
> ------------------------------------------------------------------------
> >> I know Fax is not officially supported on TDM400P cards but I did not
> >> expect
> >> not being able of sending one single Fax.
> >> Actually when I try to send a Fax, the call is established between my *
> >> server and the remote Fax but after 30 secs Asterisk disconnects the
> >> call
> >> and Hylafax reports NO CARRIER DETECTED.
> >>
> >> Tried playing around with a few parameters such as no
> >> echocancellation, alaw
> >> (also slinear) codec, faxdetection =incoming in zaptel but with no
> luck.
> >>
> >> Regards,
> >> Jose Limeres
> >
> >
>
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