31 Dec
2007
31 Dec
'07
12:44 a.m.
Is it possible to connect two modems (eg: Hayes 2400
to Hayes 2400)
using a 'dead' or isolated pair of copper wire and have them be able
to communicate?
It depends on the modems. Some modems refuse to try to talk unless
they see dialtone and/or battery voltage. Others can be told to ignore
such deviations from normal PSTN operation and try to operate anyway.
(It's possible that some modems that appear to be in the first class
are actually in the second and just don't document it.)
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