When we put DSL into our house way back in the day the phones would be all static. We had these little things that plugged into the wall, then into the phone that was supposed to make it stop.. Wasn't that helpful? >_<
Wasn't that helpful? >_<
Yes, filters placed on all jacks that phones are used on will keep high frequencies that DSL uses separated from the lower voice frequencies for the phone, and get rid of the horrid noise you're hearing.