ADSL Filter Is an electronic device that isolates the ADSL and voice bands. This filter is required whenever you connect a computer to the internet using Broadband over a standard telephone line. These filters divide the signals on the telephone line between the high-pitched computer modem sounds and the lower pitched human voices and hence clearer voice Installation: Typical installation for an existing home involves installing ADSL filters on every telephone, fax machine, voice band modem, and other voiceband device in the home, leaving the ADSL modem as the only unfiltered device. For wall mounted phones, the filter is in the form of a plate hung on the standard wall mount, on which the phone hangs in turn RJ11 6P2C Male to 2 Female Telephone Modem ADSL Splitter Filter. A DSL splitter is just a regular phone splitter with a filter on one of the outputs. They allow the internet to work on your PC through the telephone. line (connected to the modem of course) Lightning-Protecti