[vox-tech] Mgetty-fax problems --- SOLVED (in a way)

[Henry House]

As you may recall, I asked for help with a modem that would pick up fax
calls but failed to deliver the fax data to its host machine, running
mgetty-fax.

På tisdag, 05 april 2005, skrev hajhouse:
[...]
> I tried setting these to fax-owner: hajhouse and fax-group: users and sent
> another test fax. Here are the resulting log lines:
> 
> 04/04 14:11:07 yS1  wfr: waiting for ``RING''
> 04/04 14:11:07 yS1  send: ATA[0d]
> 04/04 14:11:07 yS1  waiting for ``CONNECT''
> 04/04 14:12:07 yS1  found action string: ``NO CARRIER''
> 04/04 14:12:07 ##### failed A_FAIL dev=ttyS1, pid=22800, caller='none', conn='', name=''
> 
> --
> 04/04 14:12:07 yS1  mgetty: experimental test release 1.1.31-Jul24
> 04/04 14:12:07 yS1  check for lockfiles
> 04/04 14:12:07 yS1  locking the line
> 04/04 14:12:08 yS1  lowering DTR to reset Modem
> 04/04 14:12:08 yS1  send: \dATQ0V1H0[0d]
> 04/04 14:12:09 yS1  waiting for ``OK'' ** found **
> 04/04 14:12:09 yS1  send: AT[0d]
> 04/04 14:12:09 yS1  waiting for ``OK'' ** found **
> 04/04 14:12:09 yS1  mdm_send: 'ATI'
> 04/04 14:12:09 yS1  Generic Rockwell modem (56000)
                              ^^^^^^^^

I have solved the problem, in a way. To quote the mgetty manual
(http://home.leo.org/~doering/mgetty/mgetty_32.html):

> NEWS: Most recent Rockwell 33.600 modems do not support any decent fax
> operation anymore -- they added "simultaneous Voice over Data"     
> (SVD) to their modem firmware, and because the Eproms are not large
> enough, they threw out their class 2 firmware. Don't buy such a modem, it
> won't work properly with mgetty+sendfax.
> 
> If you buy a Rockwell-based modem (they are usually quite cheap), make sure
> that you get one that can do class 2 or (better) class 2.0.   Even if it's
> written on the box, some recent models just can't do it!

I am now quite certain that I have such a defective non-fax-capable modem
:-(. I have exchanged the problematic modem for another older modem, also
with a Rockwell chipset but apparently pre-dating the news above, and now
fax reception works perfectly.

Moral: make sure the modem is fax-capable before buying it.

-- 
Henry House
+1 530 753 3361 ext. 13
Please don't send me HTML mail! My mail system usually rejects it.
The unintelligible text that may follow is a digital signature.
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