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From: brian@ucsd.Edu (Brian Kantor)
Newsgroups: sci.electronics
Subject: Re: Wanted: caller ID specs/plans/etc...
Message-ID: <14669@ucsd.Edu>
Date: 28 Jun 90 05:12:36 GMT
References: <6766@umd5.umd.edu>
Distribution: na
Organization: The Avant-Garde of the Now, Ltd.
Lines: 18

In article <6766@umd5.umd.edu> wchan@umd5.umd.edu (Winthrop D Chan) writes:
>I'm trying to find information on the Caller ID that is used in Maryland. I
>have seen a few companies offering boxes already, but what I want to do is
>make something that will output the information thru an RS-232 compatible
>port so I can do security checking on my BBS (also eases validations!). Know
>where I could find plans or information on it?

If caller-id is enabled on your line (i.e., you paid ThePhoneCo to turn
it on for you), you'll hear 202 modem tones at 1200 bps between the
first and second rings.  Methinks you could hack up an old 202 modem to
deliver this information to your computer.  What's in there is the
digits of the caller's phone number and a few flag characters.

I'm waiting until Telebit or one of the other advanced modem
manufacturers offers this in their standard product - i.e., the modem
loads a string register with the contents of the CLID on an incoming
call.
		- Brian