Corning CPS-S100-0A-CN DSL micro-filter (4 pcs)

Corning CPS-S100-0A-CN DSL micro-filter (4 pcs): - Separate the DSL (Digital Subscriber Line) signal from the standard voice telephone signal on a single phone line - When you have DSL internet and a traditional landline phone on the same line, the filter serves two crucial purposes: 1./ Eliminates Static/Noise on Phone Calls; 2./: Prevents DSL disconnections. - Plug the filter into the phone jack on the wall, and then plug your telephone (or other voice device) into the jack on the filter - Plug your DSL modem/router directly into a phone jack that is NOT filtered, or into a separate, dedicated jack