Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!iuvax!inuxc!inuxm!micl23
From: micl23@inuxm.UUCP (W E Miller)
Newsgroups: sci.electronics
Subject: Reading phone tones by computer - THE ANSWER !!!
Message-ID: <821@inuxm.UUCP>
Date: 21 Nov 88 05:16:56 GMT
Distribution: na
Organization: AT&T Consumer Products, Indianapolis
Lines: 38

> >    I am looking for a device that will interface a phone line to a computer
> >that will allow the computer to read the tones a caller presses and be able
> >to send a digitized or computer generated voice in response to what
> >is pressed.


I wanted to give you a useful reply to your request for information
on a chip you were looking for. The company which produces the devices
is Teltone. Their representatives in California are: GNH, Inc. Moun- 
tain View, CA (415) 961-6740 (for Zip Codes 94000 and up); and Vale
Elec. Association Irvine, CA (714) 551-4004 (for Zips of 93999 and lower).
Depending on your needs, etc., the reps may give samples. They can supply
data. 

To also get data and actually buy chips, their distributors in California
are: Pacesetter Electronics Anaheim (714) 779-5855  and Sunnyvale (408)
734-5470.

They make several good products. The one which looks like the one you're 
interested in is the DTMF Receiver IC. It translates Touch Tones to a 
4-bit code you can use in a digital system. Contact their rep or sales
outlet and thewy can send you a full brochure on their products.

 The data sheets they send on their chips will show you the basic inter-
face circuits you need - very sinple, with common parts. You shouldn't
need anything else. These should suit FCC Part 68 just fine, although
I'm not a lawyer...

As far as speech synth goes, the Shack IC would work. Also, they sell
a book called "Understanding Telephone Electronics" for $3.40 (mine
was in '84). Look it over, it may help. Goodest of lucketh.
-- 

  _  /|        William E. Miller AT&T Consumer Products Indpls, IN 
  \'o.O'       These opinions are mine, and they're not for sale!! 
  =(___)=               328 Cossell Dr. Indpls, IN 46224 
     U               (317) 247-7321 (h)  (317) 845-3882 (o) 
 ACK! PHHT!