Sellam,
I too have a Micromodem without that coupler... If you run across an
extra....
George Rachor
=========================================================
George L. Rachor Jr. george_at_rachors.com
Hillsboro, Oregon
http://rachors.com
United States of America Amateur Radio : KD7DCX
On Wed, 31 Oct 2001, Sellam Ismail wrote:
> On Wed, 31 Oct 2001, David Williams wrote:
>
> > > You need the coupler box for this, which isn't easy to find. It's a
> > > black plastic box that plugs into the card, and has a phone jack on
> > > the front.
> >
> > I hoped to maybe make a new one, assuming it was just a pass
> > through connection of some sort.
>
> It isn't. This modem was made in the days when you weren't allowed to
> hook anything to the phone system unless it was Bell approved. This
> particular box (called the "coupler") is an approved device for attaching
> the modem to the phone network.
>
> If I'm not mistaken, it contains the relays necessary for going on and off
> "hook", among other circuitry that provides filtering and isolation. The
> modem by itself cannot do this, and needs the coupler to fully function.
>
> The Micromodem IIe (my first modem) had all this circuitry on-board. The
> end of the modem had an RJ-14 jack that you mounted onto the back of the
> computer.
>
> I run across the couplers occasionally. The next time I see one I'll grab
> it for you.
>
> Sellam Ismail Vintage Computer Festival
> ------------------------------------------------------------------------------
> International Man of Intrigue and Danger http://www.vintage.org
>
>
Received on Wed Oct 31 2001 - 11:06:03 GMT