Early Hayes Modems

From: Richard Erlacher <edick_at_idcomm.com>
Date: Sat Dec 16 09:15:22 2000

The DAA was for Data Access Arrangement, and you're exactly right, in that
the Microcoupler is just that, the "phone-line interface," or DAA. All it
did was ensure we didn't hook up more load than the line would drive.

----- Original Message -----
From: "bill_h" <bill_h_at_azstarnet.com>
To: <classiccmp_at_classiccmp.org>
Sent: Saturday, December 16, 2000 6:03 AM
Subject: Re: Early Hayes Modems

> The Microcoupler is just the phone line interface, of a two part
> modem. That same coupler was used on the S-100 board version modem
> and the Apple II board modem. Seems to me the telephone company
> required a separate DAA (data acquisition something_or_other?)
> to interface to ''their'' phone lines. Remember all that crap
> about we couldn't just hook things up - we might ''damage''
> telephone company property? Turns out all we really damaged was
> their profits!
> Bill Hemmings
> Tucson, AZ
Received on Sat Dec 16 2000 - 09:15:22 GMT

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