On Thu, 15 Mar 2007 20:10:38 GMT, "Brian Sharrock"
wrote:


Thank the uniselectors for the '..... ' and boredom / laziness for the
'etc'
We used to tap the pulses for internal three-digit Automatic exchange
internal numbers .
Full umpteen digit STD numbers ? ...

That wouldn't work in STD days, however before STD ...

You could tap out the local dialling code to an adjacent exchange, and
from there you could tap out, it's local dialling code to an adjacent
exchange ... USW, USW, USW.

IE Leeds Cleckheaton Brighouse Huddersfield Slaithwaite
Marsden Oldham Chadderton Manchester {Local Number]

Not a nec. a working example BTW.

Allegedly the eagle eared engineers in the exchange could detect the
abnormal dialling cadence (In amongst the racket of say 400 other
calls being dialled at 10 PPS, so they say), and get a trace on you.

DG