On Mon, Jun 1, 2009 at 6:40 PM, Ric Werme <ewe...@comcast.net> wrote: > I identified with the 3rd photo. The soft cups for the handset were > typical of the genre.
Yah, I've seen an acoustic coupler before, but never one with a wooden enclosure! :) > Of course the circuitry was analog - other than dialing, the > phone system was analog. Much of it still is. Local loop POTS. I meant the modem's computer interface. The video explains -- and demonstrates -- that the modulation is just tied directly to the serial port's output. The tone changes when the wires are connected, or if a different cable is used. I had made an uninformed assumption that more sophisticated electronics would be needed in even an early modem. Apparently not. :) -- Ben _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
