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- Newsgroups: sci.electronics
- Path: sparky!uunet!unislc!mgc
- From: mgc@unislc.uucp (Marc Christensen)
- Subject: Re: Detecting a tone on a phone line
- X-Newsreader: TIN [version 1.1 PL6]
- References: <Bx9Lz7.JFL@acsu.buffalo.edu>
- Message-ID: <1992Nov6.161628.17720@unislc.uucp>
- Organization: Unisys Corporation SLC
- Date: Fri, 6 Nov 1992 16:16:28 GMT
- Lines: 16
-
- Adam M Gandler (v064mcqs@ubvmsb.cc.buffalo.edu) wrote:
- :
- : I am desining a project that mutes my stereo when the phone rings
- : or the receiver is picked up. I want to find a way to remotely
- : activate or deactivate this device for when I use my modem. I want to
- : have it so that if I pick up the phone and dial the *, its either
- : activates of deactivates. What is the simplest way to detect a touch
- : tone signal directly from a phone line. Is it simple as just
- : a 567 tone decoder?
- :
- there are 2 tones 1 for the column and 1 for the row. so you could use 2
- tone decoders or get a DTMF decoder designed for this purpose.
- Radio Shack used to sell them. B.G. Micro has them for $2.25 Ea.
-
- Marc Christensen
-
-