Personally I'd not run the xDSL signal any further than it absolutely has
to. Fit the DSL modem at the NTE and run network cabling to your
switch/firewall or WHY.

Why do you say that?
The DSL might have come many kilometres from the exchange in an un-screened
bundle
with hundreds of other pairs and running close to many sources of electrical
noise.
Why do you suppose that an extra 25 meters is going to be detrimental?

Contrast this with the known distance limitations of 100Mb and Gigabit
Ethernet.

--
Graham.
%Profound_observation%