16 Dec
2000
16 Dec
'00
9:15 a.m.
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.
Dick
----- Original Message -----
From: "bill_h" <bill_h(a)azstarnet.com>
To: <classiccmp(a)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