Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!hayes!tnixon
From: tnixon@hayes.uucp
Newsgroups: comp.dcom.modems
Subject: Re: Modems capturing caller-ID?
Message-ID: <3698.276e0aa9@hayes.uucp>
Date: 18 Dec 90 12:25:13 GMT
References: <39063.276c133a@ccavax.camb.com>
Organization: Hayes Microcomputer Products, Norcross, GA
Lines: 31

In article <39063.276c133a@ccavax.camb.com>, bruce@ccavax.camb.com
(Barton F. Bruce) writes: 

> Are there any plans for modems to capture caller ID? If so,
> what about the necessary commands for the computer to inquire what
> it is?

To the best of my knowledge, no major modem manufacturer has 
actually announced that they're going to support the Caller ID 
feature in their modems.  Lots of folks are talking about it, but it 
appears that most are waiting to see how widespread the feature 
actually turns out to be and what the regulatory acceptance will be 
before investing much in the way of engineering.  Caller ID uses a 
modulation scheme unlike any found in typical PC-class modems and 
also requires the ability to receive it without going off hook.  Both 
of these require pretty significant changes in the modem; it's not 
trivial to support Caller ID in a modem.

About the closest thing to a Caller ID "command" is what is 
contained in the Hayes ISDN AT Command Set.  ISDN, as you may know, 
includes Caller ID as a built-in function.  Our ISDN PC Adapter can 
deliver the information as part of the "RING" message, store it in a 
string register, or both.  Any future modem implementation is likely 
to be similar, but no company has made any announcement to that 
affect as far as I know.

-- 
Toby Nixon, Principal Engineer    | Voice   +1-404-449-8791  Telex 151243420
Hayes Microcomputer Products Inc. | Fax     +1-404-447-0178  CIS   70271,404
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