3 Aug
1998
3 Aug
'98
10:04 a.m.
On Mon, 3 Aug 1998, Tony Duell wrote:
Hmm... In the UK it's possible (I believe) to get a point-to-point link
from BT (The Telephone Company) with no 'battery' on the line. That's to
say that the line is electrically dead, and that you don't get 48V DC
across it.
Hmmm. Well, I wonder about this. I know such services exist in the US as
well, but they still at least have battery on the line. I would wonder
what good a dry point-to-point connection through the telco would be over
several miles, where the resistance in that length of wire would absorb
whatever voltage you put on it.
Sam Alternate e-mail: dastar(a)siconic.com
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public network? I've got a couple of old BT modems
that seem to be
designed to only work on a private, internal network (at least that's
what the manuals imply), so maybe line voltages are different or
whatever...
Line voltages would not (and could not) differ unless it was some short
haul modem. The higher layer protocols might though.