Sending a fax to this destination delivers only the coverpage, then the error +FPTS:2 (bad page, retrain requested) (retrain negative) occurs and the sendprocess is aborted.
To: baudler@lulu.gsf.de, Matthias.Apitz@SOFTCON.de
Subject: Re: Problem with some FAX-machines
Cc: flexfax@sgi.com
Date: Thu, 01 Aug 1996 11:00:39 +0200
From: Rainer Krienke
<...stuff deleted...>
Hello experience excacly the same problem I think. I found
one particular number
that cannot receive a fax from hylafax (Hylafax Beta 18,
Sunos 4.1.3, Zyxel
U1496 , Firmware V6.16M). Sending a fax to this
destination delivers only the coverpage, then the error
+FPTS:2 (bad page, retrain requested)
(retrain negative)
occurs and the sendprocess is aborted.
If the modem will retrain or not is as far as I
know determined by the modem
parameter *Q1 (*Q2, *Q3, *Q0)
(this is for zyxel modems; other modems use eg %E1 %E0 for this purpose).
Our modem was set to *Q2 which means to use the
next slower transferspeed if the
signal quality is bad and to speed up again, if the signalquality of the
telephone line gets better again. Perhaps one sould try either *Q1
(initiates a real renegotiation if signalquality is bad)
or *Q0 (no renegotiation at all).
The AT*Q command relates to a data connection and not a fax connection
(unless you know something that I do not). Retraining during a fax
session is required when the receiver requests it through the post-page
message response--in this case "RTN" or ReTrain Negative (acknowledgement
of the received page data). Problems of this sort are typically caused
by a poor phone connection but sometimes may be due to improperly encoded
page data or, if ECM is being used, a bug in the ECM protocol. The session
log that was supplied indicated ECM was not being used so the only reasonable
possibilities would seem to be bad data or a bad phone connection. The
former is highly unlikely and the original poster did not indicate if the
problem was reproducible or if they'd tried a different phone line.
Sam
Matthias Apitz / guru@softcon.de ; (07:34:58 AM 01/27/97)