Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!pacbell!att!mcdchg!ddsw1!corpane!sparks
From: sparks@corpane.UUCP (John Sparks)
Newsgroups: sci.electronics
Subject: Re: Touchtones
Message-ID: <860@corpane.UUCP>
Date: 28 Jun 89 12:20:48 GMT
Organization: Corpane Industries Inc., Louisville, KY
Lines: 32

[I asked for a list of the touch tone frequencies]
[   I promised to summarize for the net          ]


Thanks to Brian Link and Ronald Buttiglieri for the table below:


                     697 Hz    [1]   [2]   [3]   [A]

                     770 Hz    [4]   [5]   [6]   [B]
low group
frequencies          852 Hz    [7]   [8]   [9]   [C]

                     941 Hz    [*]   [0]   [#]   [D]

                              1209  1336  1477  1633
                               Hz    Hz    Hz    Hz

                                 high group frequencies

Touch-tones are two frequencies sounded together for each button pressed.
For example [1] will sound 697hz and 1209hz.

[A]-[D] are part of the touchtone standard but are presently unused.

Thanks for the help guys.


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