Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!ucsd!pacbell.com!tandem!netcom!gandrews
From: gandrews@netcom.COM (Greg Andrews)
Newsgroups: comp.dcom.modems
Subject: Re: T2500's and touchtones
Summary: Can't decode DTMF tones (touch tones), only send them.
Message-ID: <25354@netcom.COM>
Date: 23 Feb 91 16:34:43 GMT
References: <1991Feb22.143956.12385@scifi.uucp>
Followup-To: comp.dcom.modems
Organization: Netcom - Online Communication Services  UNIX System {408 241-9760 guest}
Lines: 24

In article <1991Feb22.143956.12385@scifi.uucp> njs@scifi.uucp 
(Nicholas J. Simicich) writes:
>
>I suspect I'm totally whacked on this, but maybe someone knows:  I'd
>like to be able to decode DTMF tones through a modem for automatic
>authentication.  Since I have T2500 modems, those would be best, but
>are there any V.32 modems that can do this?  
>

Hi Nick,  I'm afraid the T2500 doesn't have any capabilities for
receiving and decoding touch tones.  I'm not aware of any modems
that do (but I'm not conversant with every modem on the market).

Technically speaking, it's certainly *possible* for the T2500 to
perform DTMF decoding (DTMF = Dual Tone Multi-Frequency - the 
official name for 'touch tones') - I would imagine that it's 
possible for any modem that uses DSP instead of just a plain 
chipset - it's just that Telebit hasn't put that feature into 
the modems.

-- 
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| Greg Andrews      |   gandrews@netcom.COM |
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