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From: JEL@PSUVM.UUCP
Newsgroups: comp.dcom.telecom
Subject: Telephone Ring Detection
Message-ID: <8704150611.AA25473@ucbvax.Berkeley.EDU>
Date: Fri, 10-Apr-87 10:55:00 EST
Article-I.D.: ucbvax.8704150611.AA25473
Posted: Fri Apr 10 10:55:00 1987
Date-Received: Sat, 18-Apr-87 00:16:37 EST
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Approved: telecom@xx.lcs.mit.edu

Is it just my imagination, or did Radio Shack used to sell a chip that would
detect the ring signal on a telephone line?  What I want to do is build a
simple box that would plug into my equalizer input or output lines, and also
the phone lines.  When the phone rings, it would can the stereo, so that I
can hear the phone.  (Don't tell me I'm playing the stereo too loud, I
already know that.)  I called both Radio Shack stores around here, and they
are clueless.  (Both stores misunderstood and tried to sell me their touch-
tone decoder chip... haha  Gotta love their training.)

Any ideas on where I can get this chip now, or how I might build something
w/o the aid of this chip?  Feel free to e-mail me, or post to the net.

I would also like to have some idea what the REN of whatever contraption
you come up with would be.  Our lines are pretty taxed w/6 phones & an
answering machine.

Thanks for your time (or in advance, if you prefer, but I gather that's
not real cool.  Can anybody explain to me why?)

- Jon