asterisk users - Mar 2005 - Incomplete incoming fax using spandsp 0.0.2pre10

Hi,

I have successfully compiled spandsp 0.0.2pre10 with * 1.05 which can accept
inbound fax calls. However, all fax received are incomplete  (the first 10%
of an A4 page is fine, the remaining is either missing or garbled). I
suspect this is due to 'training error' (see below) which, according to
Steve Underwood's postings, cannot be resolved further. I wonder if it would
help to upgrade my test machine which uses Asus m/b + Celeron 2.4GHz cpu +
512MB Ram + 2 Clone X100P cards (MD3200 chipset based) + RH 7.3. Secondly,
will the use of a Digium card fix the problem?

Thank you for sharing your inputs.

Steve FH

++++++++++++++++++++++++++++++++++++++++++++++++
    -- Executing RxFAX("Zap/2-1",
"/var/spool/asterisk/incoming/1110539705.0.tif") in new stack
Mar 11 19:15:27 NOTICE[22614]: chan_zap.c:4160 zt_read: Fax detected, but no
fax extension
DCS with final frame tag
In state 9
Coarse carrier frequency 1694.12 (54)
Training failed (sequence failed)
Coarse carrier frequency 1699.59 (66)
Training error 0.687966
Training succeeded (constellation mismatch 0.834685)
Start rx document
Start rx page - compression 2
Training failed (sequence failed)
Coarse carrier frequency 1699.59 (66)
Training error 0.544494
Training succeeded (constellation mismatch 0.591839)
EOP with final frame tag
In state 5
DCN with final frame tag
In state 8
  == Auto fallthrough, channel 'Zap/2-1' status is 'UNKNOWN'
++++++++++++++++++++++++++++++++++++++++++++++++

Hi,
Just for the record: I have found another X100P clone card (which is also
based on MD3200 but is obviously different from the ones I am using) and use
them to receive fax. While the same 'training error' occurred, the fax
were
received well (8 times in a row). It looks like the card hardware makes a
critical difference.

Steve FH


----- Original Message ----- 
Sent: Friday, March 11, 2005 7:20 PM
Subject: [Asterisk-Users] Incomplete incoming fax using spandsp 0.0.2pre10

> Hi,
>
> I have successfully compiled spandsp 0.0.2pre10 with * 1.05 which can
accept
> inbound fax calls. However, all fax received are incomplete  (the first
10%
> of an A4 page is fine, the remaining is either missing or garbled). I
> suspect this is due to 'training error' (see below) which,
according to
> Steve Underwood's postings, cannot be resolved further. I wonder if it
would
> help to upgrade my test machine which uses Asus m/b + Celeron 2.4GHz cpu +
> 512MB Ram + 2 Clone X100P cards (MD3200 chipset based) + RH 7.3. Secondly,
> will the use of a Digium card fix the problem?
>
> Thank you for sharing your inputs.
>
> Steve FH
>
> ++++++++++++++++++++++++++++++++++++++++++++++++
>     -- Executing RxFAX("Zap/2-1",
> "/var/spool/asterisk/incoming/1110539705.0.tif") in new stack
> Mar 11 19:15:27 NOTICE[22614]: chan_zap.c:4160 zt_read: Fax detected, but
no
> fax extension
> DCS with final frame tag
> In state 9
> Coarse carrier frequency 1694.12 (54)
> Training failed (sequence failed)
> Coarse carrier frequency 1699.59 (66)
> Training error 0.687966
> Training succeeded (constellation mismatch 0.834685)
> Start rx document
> Start rx page - compression 2
> Training failed (sequence failed)
> Coarse carrier frequency 1699.59 (66)
> Training error 0.544494
> Training succeeded (constellation mismatch 0.591839)
> EOP with final frame tag
> In state 5
> DCN with final frame tag
> In state 8
>   == Auto fallthrough, channel 'Zap/2-1' status is
'UNKNOWN'
> ++++++++++++++++++++++++++++++++++++++++++++++++
>
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