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From: jon_sree@world.std.com (Jon Sreekanth)
Newsgroups: comp.dcom.telecom
Subject: The Tone That Prompts For Calling Card Number
Message-ID: <15178@accuvax.nwu.edu>
Date: 4 Dec 90 03:06:37 GMT
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I know the subject line sounds obscure; I couldn't describe it any
better in one line.

 From a public phone, for example, to make an operator assisted call,
or to make a calling card, one might dial 0 - area code - number. Then
there's a pause, and a sound best described as a 'boiiiing', or a
'pinnng', and after that, one enters the calling card number (or after
time out, operator comes on line.)

What are the specs on that tone? Frequency (single, or mixture of
frequencies), envelope, duration, etc.

(We're thinking of using that as a prompt on one of our products.)


Thanks, 

Jon Sreekanth

Assabet Valley Microsystems			Fax and PC products
346 Lincoln St #722, Marlboro, MA 01752		508-562-0722
jon_sree@world.std.com