Media for Changing from room filters to a splitter - info?

Changing from room filters to a splitter - info?

Hello all -

I just came back from a friend's house, we both have DSL.

My setup uses a single "splitter" at the network interface outside the house (I was there when the installer put it in, but don't recall whether the splitter is installed on "my side" of the network interface, or the phone company side). I then utilized the red/green phone wiring for my voice and yellow/black for DSL.

My home setup works smoothly without problems. No "interference" between the voice and DSL lines at all.

My friend's setup (also SBC) uses the multiple "filters" at each phone jack location, instead of a single splitter and "dual phone lines". He _does_ have internal 4-conductor wiring, so that can be easily changed.

He is having problems using the phone and DSL simultaneously. If the phone is in use, the DSL connection sometimes slows down or stops. In addition, the phones often have the "carrier sound" of the DSL signal in the background. This suggests to me that either the filters aren't doing their job, or somewhere his wiring is incorrect.

I would like to obtain a splitter, insert it into the network interface, go to a 4-wire setup, remove the "filters", and see if that makes a significant difference (I think it will).

Has anyone else made such a change on their own? (i.e., without calling for a phone company tech visit)

I would like to install the splitter in the network interface outside his house. Can it go into the "user side" of the box, or does it have to go in the "company side"?

What make and model of splitter would you folks recommend?

Thanks,

- John