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From: webster@romulus.rutgers.edu (John Clayton Webster)
Newsgroups: comp.dcom.telecom
Subject: 16 Buttons -- Not 12?
Message-ID: <12520@accuvax.nwu.edu>
Date: 24 Sep 90 07:37:32 GMT
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X-Telecom-Digest: Volume 10, Issue 673, Message 8 of 9


An odd thought sprang upon me recently while talking to a friend.  Do
telephones actually use sixteen tones rather than just twelve normally
available?  I apologise if this has been brought up before, I just
found this group.

Clay Webster


[Moderator's Note: Actually, the topic has come up frequently. Yes,
telephones have sixteen tone combinations available. The four you do
not normally see on your dial are frequently known as A,B,C, and D.
They have a very limited application at this time. Perhaps some
readers will be so kind as to send you recent messages from the Digest
discussing these tones and their application.  PAT]