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From: jon_sree@world.std.com (Jon Sreekanth)
Newsgroups: comp.dcom.telecom
Subject: Re: DTMF in Japan
Message-ID: <16196@accuvax.nwu.edu>
Date: 19 Jan 91 16:21:39 GMT
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X-Telecom-Digest: Volume 11, Issue 49, Message 6 of 11


In article <16153@accuvax.nwu.edu> news@accuvax.nwu.edu (USENET News
System) writes:

> In a recent message, John Higdon mentions the relative lack of DTMF in
> Japan.  Having been telephonically bouncing around Tokyo on and off

I guess I started this thread some time ago, by asking why answering
machines and voice mail services could not work by detecting pulse
inputs. One of the responses was that the receiving phone does not see
line current interruptions, just clicks. I knew this, but as I
mentioned, one AT & T answering machine claimed to work with non-DTMF
phones.

Well, I finally investigated. The AT&T Answering System Telephone
1523 says on the box that remote operation is possible from pulse
phones. This is technically correct, but somewhat misleading, because
the user manual (which I read in the store) describes the operation:
if after some time out period, you haven't entered your DTMF password,
the answering machine starts prompting you by voice, and you respond
_by speaking_. The manual says it does not do any speech recognition,
just responds to audio energy. To enter your two digit password, you let
it step through announcing digits, and when you hear the first digit,
you say any random word, and then it steps through for the second
digit. It's as easy as pulling teeth.

Regards, 

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