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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Hi
Steve</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>We
have been struggling for some time to get spandsp working properly on our
asterisk system.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>We
are using a TE410P card with a single E1 from our PTT (Zaptel primary clock
source) and another E1 to a NEC PBX. </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>The NEC
PBX in turn has an E1 connection to a Tenovis I55 PBX, which then has Basic
Rate connections to a Cycos MRS Fax server.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>We
never experience problems with the Cycos Fax server (which uses an Eicon Diva
card).</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>We
also do not experience problems on the 7 or 8 fax machines connected to our NEC
and Tenovis PBXs (nor do we hear any ‘clicks’ on voice calls).</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Therefore
we conclude that we do not have any ‘timing slips’ or suchlike with our setup.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>However,
receiving faxes on the Asterisk with spandsp presents us with a problem – if we
send a fax from a particular fax machine (old MITA machine), spandsp invariably
does not receive the whole fax, cutting it at some unpredictable point. This
particular fax machine is in daily use and works fine to any other fax machine.</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>My
knowledge of fax principles being quite limited, it seems to me that spandsp
communicates perfectly with the transmitting fax machine up to a point,
whereupon it fails to react to the transmitting machine’s instructions to
advance to the next line scanned. This results in subsequent lines being
superimposed upon each other, producing a dark horizontal line somewhere within
the page (usually less than halfway).</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>I’m
inclined to believe that this must be a small problem which can be catered for
in spandsp’s code, and make myself available to send you test faxes if you
would like to verify this problem. </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Best
regards</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Les
Caroto</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Logitel
Telecom</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Johannesburg</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>South
Africa</span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'> </span></font></p>
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<P><FONT SIZE=2>--<BR>
No virus found in this outgoing message.<BR>
Checked by AVG Anti-Virus.<BR>
Version: 7.0.323 / Virus Database: 267.7.7/20 - Release Date: 2005/06/16<BR>
</FONT> </P>