How to Install DSL Filters for EarthLink DSL & Home Phone Service?
DSL filters reduce noice interference between your phone calls and your DSL signal. Because your DSL signal is active on every phone jack in your home, you will need to install a DSL filter wherever you have something plugged into a jack. This includes any phone, answering machine, fax machine, or TiVo®. DSL filters will reduce the interference between these devices and your DSL signal.