ard at p850ug1.demon.co.uk (Tony Duell) wrote:
Has anybody
ever tried interfacing a modem to a cordless phone handset?
Are cordless phones truely full-duplex, or are they more like
loudspeaking phones whee a local voice input disables the speaker
output?
That is not a problem for voice, of course, but it is for full-duplex
modems.
Every one I ever had in my hands was full-duplex, and we started with the analogue
generation before we went to DECT. Cordless phones are fun anyway, I recently built a
remote power controller for use with an analogue Siemens Megaset base station. (The base
station in the ground floor, next to my father's desk, is powered all the time,
"picking up" the handset energises a relay that switches on mains for our DSL
modem and ethernet hub. Handset is next to my desktop PeeCee in the first floor and
powered only when my desktop computer is on. The controller of course also has a local
switch wired in parallel, for when my father wants to go online.)
> It shouldn't be too hard to use a C/L phone
as the wireless link
> between two modems.
I'd be very interested in such an arrangement, but I have the suspicion that there
will be no convenient location in the handset's circuitry to interface a phone line
to.
For the DECT system anyway, there are things called "cordless phone sockets";
they aren't really cordless as they need a wall wart, but they are learned to the base
station like a new handset is and present themselves to a phone/fax/modem/whatever like a
phone line. Would love to get my hands on one of those one time.
I believe Tony
also has a NetCommander which would let him select which
Actually I have 3 of them. One is the 16 port model (with 16 RS232
ports), the others are the fixed-configuration 6 RS232/4 Centronics
models.
But they do not solce the cabling problem. Nor do they have enough ports
for all my classics...
I see it's hard to make do without permanent cabling, but the ports shouldn't be
such a problem. You could just run two links into each room where you have machines (to a
wall socket), then use temporary cables to connect just the machines on which you are
working at the moment (either two in one room, or one in one room, one in another -
therefore two links).
Cheers,
Arno
--
Arno Kletzander
Student Assistant // Studentische Hilfskraft
Informatik Sammlung Erlangen
www.iser.uni-erlangen.de
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