Article View: sci.electronics
Article #8493Re: Phones used as intercoms
From: Jurek Rakoczynski
Date: Tue, 20 Nov 1990 17:54
Date: Tue, 20 Nov 1990 17:54
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2272 bytes
In article <1990Nov12.181746.5465@syssoft.com>, len@syssoft.com (Len Galasso) writes:
>
>
> I live in a four-bedroom, split-level house which has at least one phone
> jack in each room. What I'd like to do is to allow the phone "network"--
> if you will--act like a local intercom when it isn't being used as a
> regular phone system. More specifically, I'd like to be able to somehow
Remaining text deleted.
Radio & Electronics had several articles over the last several years to do
similiar projects, but if you want ideas for other ways to take advantage
of all your room phone jacks how about using some ideas out of Radio Shack.
1. They have a 2 station intercom that goes between the phone and wall jack.
It provide a 'hold' function. It probably uses the yel/blk leads of the
4 wire phone line that should tie all the phone jacks together (just a
guess on my part. It probably won't work if you have the 'old' style
Princes phone that used a wall transformer to send power on the yel/blk
leads to light the buttons.). It's order # 43-206, price $49.94 in the
1991 catalog.
2. You may want to try one of their 2 station (# 43-222, $14.95) or 4 station
(#43-223, $24.95) intercoms. These are provided with 66-ft cables to
interconnet the units but you could shorten the cable and add a phone
plug on the end. Just wire to the yel/blk pins on the plug and plug
into the jack.
All this assumes that you have a single line to your home that uses the
red/grn leads (standard practice, but do-it-yourselfers screw-up) and
no power on the yel/blk leads.
I have no association with Radio Shack, but they can be cheap. :-)
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!mcdphx!hrc!rako!rakoczynskij From: rakoczynskij@rako.UUCP (Jurek Rakoczynski) Newsgroups: sci.electronics Subject: Re: Phones used as intercoms Message-ID: <4e1f9d95.18d2a@rako.UUCP> Date: 20 Nov 90 17:54:06 GMT References: <1990Nov12.181746.5465@syssoft.com> Organization: AG Communication Systems-Phoenix, AZ Lines: 39