Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bgsuvax!denbeste
From: denbeste@bgsuvax.UUCP (William C. DenBesten)
Newsgroups: sci.electronics
Subject: Re: Need DTMF Decoder/Ringing Detector
Message-ID: <2566@bgsuvax.UUCP>
Date: 7 Jul 88 20:55:14 GMT
References: <5317@super.upenn.edu>
Distribution: na
Organization: Bowling Green State University B.G., Oh.
Lines: 15

From article <5317@super.upenn.edu>, by zielke@eniac.seas.upenn.edu (Stephen Zielke):

> 4. Dectecting the DTMF touch tone signals is the main problem.  There are
>    plenty of DTMF encoders that are used in the telephone (accepting
>    signals from a keypad).  But the DTMF DECODER, which would be present
>    in the central office, seems to be more difficult to find.  Anyone know
>    where to get one of these chips?

my (uugh) Radio Shack catalog lists oen for $12.95.  Its RS part
number is 276-1303.  It can be found on the top of page 143 of the
1988 catalog.

-- 
 William C. DenBesten
 denbeste@bgsu.edu