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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I had a similar issue here in Aus where I
was chasing crossover cables around. Eventually the cows actually did come home
and I called up the telco. They ‘rebuilt’ (or reinitialized) the
ISDN service and everything worked a treat from there on in. Took a couple of
days to get to this point. Suggest you will probably be OK with
straight-through Cat5e. </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Phone up BT and give ‘em some stick.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Mark.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> phil.dawson@marnock.com
[mailto:phil.dawson@marnock.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, 28 February 2006
9:34 PM<br>
<b><span style='font-weight:bold'>To:</span></b>
asterisk-users@lists.digium.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Asterisk-Users] ISDN30E
+ T1 crossover cable woes</span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:36.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
</span></font><font size=2 face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif'>Hi,</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>I'm
having problems getting our server to work with our BT ISDN30 box. We are
using a Digium TE110P card to connect to the ISDN box on the wall. The
card is configured as an E1 (strap on). I've made the T1 crossover cable
( well, made two variations ) and neither work. The light on the Digium
card flashes red and the red LED's on the ISDN box stay lit. I've tested
the configuration and all modules load ok. Done a ztcfg -vvvvv and things
look ok. Done zttest and get around 99.7% - 99.9%. After loading
asterisk I did a zap show status and alert is red.</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>After
googling I found this statement:</span></font> <br>
<br>
RED: Loss of signal (LOS): The equipment shall assume "loss of
signal" when the incoming signal amplitude is, for a time duration of at
least 1 ms, more than 20 dB below the nominal amplitude. The equipment shall
react within 12 ms by issuing AIS. <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>The
question is, is this a configuration issue, cable issue or BT issue.</span></font>
<br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Digium's
site is down so couldn't look there :-(</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>One
of the diagrams I used is here:</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>http://www.gcom.com/home/documents/faqs/cables_&_t1.htm</span></font>
<br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>The
other diagram ( can't seem to find that now ) used 1-5, 2-4 etc.</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Has
anyone seen this problem?</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Thank
you in advance.</span></font> <br>
<br>
<font size=2 face=sans-serif><span style='font-size:10.0pt;font-family:sans-serif'>Phil.</span></font></p>
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