Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: tad@ssc.UUCP (Tad Cook)
Newsgroups: comp.dcom.telecom
Subject: Re: Light Showing Phone is Off Hook?
Message-ID: <3487@accuvax.nwu.edu>
Date: 3 Feb 90 01:09:01 GMT
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X-Telecom-Digest: Volume 10, Issue 73, message 2 of 13


Jesse Asher asked how to rig up a light that would illuminate when his
modem was on-line.

Many modems have an A and A1 lead, which are on the outside pair (the
black and yellow leads on a modular connector) on the RJ11 telephone
line jack.  The A and A1 leads short together when the modem is on
line.  You may have to check your modem manual and option switches to
turn this feature on.

Just wire up a light and a battery in series with these leads, and you
will have your "modem busy" lamp.

Tad Cook
tad@ssc.UUCP