In article ,
Big Les Wade wrote:
lid posted
The basics are..

you want a filtered base plate as the first thing on the line.

from there you run an unfiltered wire to the router and a filtered wire
to all the phones.

It isn't going to make a lot of difference how long the wires are in
the average house.

The BT face plate has two sockets on the front the filtered phone
socket and the unfiltered DSL socket but it also has connections for
wires at the rear so you can run a wire for either to a remote location
without having to plug anything in to the front.

Use a proper twisted cable for the extensions and you will be fine.


The theory is ..

the modem in the router does all the filtering for the DSL side of the
system so it needs an unfiltered line.

So why is the base plate filtered?

to keep the adsl signal out of the phone.

--
from KT24 in Surrey, England