To get the best out of your inside wiring, make sure that there are no devices that might cause interference to the line. Remember, they are unsheilded copper wires. High voltage devices and speakers not sheilded will cause interference. (Speakers that came with your pc are sheilded so dont worry). Make sure connections to DSL jack are solid but do not overtighten. Overall, I wouldnt trust the install done by telco or clec. I had major packet loss, rewired my line from phone box to dsl jack, and everything is great now!!
