When using a DSL connection with a telephone or fax machine, it's necessary to put a filter on every phone line in the house or office, to separate the signals for the modem (higher-frequency ADSL) from the signals for the phone & fax (lower-frequency POTS).
This filter/splitter has three RJ11 jacks to do just that. Connect the 'line' jack to your wall outlet cable, and connect the 'phone' and 'modem' jacks to your phone or fax line, and to the modem. Each jack is conveniently labeled.
Signal quality is preserved and your connections stay clear of static and noise from interference.
Please note: you will need to install a filter on each phone in the house to prevent line noise.

Noise filter separates phone signals (POTS) from modem signals (ADSL)

Preserves quality modem connections and phone/fax signals - reduces interference

Installs in seconds; The splitter physically connects both your telephone & modem cables to one phone line

3 RJ11 Jacks: 1 to the line (wall jack), 1 to the modem, and 1 to the telephone/fax

HDE® is a registered trademark and is the only authorized seller of HDE branded products