[comp.dcom.telecom] Frequencies of TouchTone tones

Danny Padwa <PADWA@hulaw1.harvard.edu> (05/09/91)

With apologies for any inconvenience if the answer is already in the
archives somewhere:

Does anyone have a list of the frequencies generated by the buttons on
a tone phone? The question came up when one of my friends impressed us
all by getting an almost-decent "Happy Birthday" using the telephone
keypad as a piano. I suppose I could always whip out a 'scope and
mesuare the tones like we used to do in Physics, but somehow posting
seems a bit easier.

Thanx,


Danny Padwa
Padwa@Husc3.Harvard.Edu


[Moderator's Note: Yo're excused this time. Yes, this comes up
frequently, and there is a file in the archives someplace which gives
the references, but perhaps a couple of readers will dash off a note
to you. No replies needed here in the Digest.    PAT]