Path: utzoo!attcan!uunet!peregrine!elroy!hacgate!tcville!tcville.HAC.COM!ferris
From: ferris@tcville.HAC.COM
Newsgroups: sci.electronics
Subject: Reading phone tones by computer
Message-ID: <195@tcville.HAC.COM>
Date: 12 Nov 88 00:40:18 GMT
Sender: news@tcville.HAC.COM
Reply-To: ferris@tcville.HAC.COM ()
Distribution: na
Organization: Hughes Aircraft Co., El Segundo, CA
Lines: 26


 
    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 suppose that could be as simple as feeding the lines into a
tone recognizer which would get turned into ASCII or hex and sent on the
bus.  Voice generation is easy to find, but how about one that can be sent on
a phone line.  Preferably this would be a card that could plug into an IBM PC.

    Does anybody know of such a device, or the parts that would go into
making one?

    For a related question, what are the electrical characteristics of the signals
on the phone line?

Thanks,

Mark Ferris				ferris@tcville.hac.com
Image and Signal Processing Lab		ferris%tcville@hac2arpa.hac.com
Hughes Aircraft Co., EDSG
Mark Ferris				ferris@tcville.hac.com
Image and Signal Processing Lab		ferris%tcville@hac2arpa.hac.com
Hughes Aircraft Co., EDSG