On 16-Jun-2006, "Edward Barrett" <(E-Mail Removed)> wrote:
> The wire fed to my property is sort of light grey and looks like two cores.
A lot of the immediate post war stuff was light grey PVC sheathed,
for the street cabling; and for the feed from local junction box to subscriber.
The street cabling was twisted pair, but with a long, about 7 - 12 inch,
pitch.
The feed to the customer was often light grey, with 4 cores, called
quad, although often only two wires were used, the other two cut
short at the sheath. It was not proper twisted pair, since it was not
two wires twisted individually to make two twisted pairs.
The world has moved on in 30 years, newer insulating materials, tighter
twists for the street cables, but you aren't going to get BT replacing
the old stuff, so long as the phones work.
Which is why this newsgroup is filled up with BB sync problems,
the further you are from the exchange, the more you suffer from
noise, crosstalk, cable inadeqacies, and often seasonal water
related problems.
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