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Article View: sci.electronics
Article #20946

Re: Need timer on phone ring

#20946
From: Curtiss WC 67625
Date: Sun, 12 Mar 1989 23:44
23 lines
1675 bytes
In article <9114@b-tech.ann-arbor.mi.us> zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff) writes:
>I'd like to automatically prevent my phone from ringing during certain
>hours.  Preferably, the phone would still be connected and would work, it
>just wouldn't ring.  I don't want to open up the phone and modify it.
>
>Any ideas? - the best I came up with was a cheap 24 hour timer + a relay to
>cut off the phone completely.
>
>
>-- 
>  Jon Zeeff			zeeff@b-tech.ann-arbor.mi.us
>  Ann Arbor, MI			mailrus!b-tech!zeeff

Try Radio Shack part # 43-127 hooked up to your timer.  If you want to build
your own, basically you just have to block a 60-70 VAC signal, I believe.
That's the ring, everything else is DC and less than this, I think -- its
been a long time since I've played with the phone line.  Anyone want to
correct my errors?

-------------------------------------------------------------------------------
William Curtiss         407/984-6383            | "The only good martyr
Harris GISD, Melbourne, FL  32902               |  is a dead martyr."
Internet: wcurtiss%x102c@trantor.harris-atd.com |
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From: wcurtiss@x102c.harris-atd.com (Curtiss WC 67625)
Newsgroups: sci.electronics
Subject: Re: Need timer on phone ring
Message-ID: <1685@trantor.harris-atd.com>
Date: 12 Mar 89 23:44:40 GMT
References: <9114@b-tech.ann-arbor.mi.us>
Sender: news@trantor.harris-atd.com
Reply-To: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff)
Distribution: usa
Organization: Harris Corporation GSS, Melbourne, Florida
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