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.
Phone up BT and give ‘em some stick.
Mark.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, 28 February 2006
9:34 PM
To:
asterisk-users@lists.digium.com
Subject: [Asterisk-Users] ISDN30E
+ T1 crossover cable woes
Hi,
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.
After
googling I found this statement:
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.
The
question is, is this a configuration issue, cable issue or BT issue.
Digium's
site is down so couldn't look there :-(
One
of the diagrams I used is here:
http://www.gcom.com/home/documents/faqs/cables_&_t1.htm
The
other diagram ( can't seem to find that now ) used 1-5, 2-4 etc.
Has
anyone seen this problem?
Thank
you in advance.
Phil.
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