
Aztech DSL Phone Filter is used to block any noise generated by other phones, fax, answering machines and analog modems introduced by the Plain Ordinary Telephone Service (POTS) line while passing high frequency signals to DSL Modem. The DSL Phone Filter isolates DSL and home phone line signals from voice signal on both lines for peak data performance and voice quality. The filters block the on-hook phones from degrading the DSL digital modem signal.