1 or 2 Line Filter
We have wall phones, a Computer, and home security all on phone lines. We have a lot of static on our phones, so much we sometimes have to hang up. We have filters on all that we installed in 1999 when the security system was installed. The static has only started the past couple years and has gotten really bad. I want to get NEW DSL phone filters but not sure if we need 1 line or 2 line filters. Can someone tell me??????