Patent ID: 6829336
Filing Date: 2004-12-07
Classification: H04M

Abstract:
A filtering device for active filtering at a customer premises, comprising:an input interface operable to receive telephone signals and digital data signals communicated from a central office using a telephone line; an active low-pass filter operable to receive the telephone signals and the digital data signals from the input interface, and to receive electrical power from one or more components of digital subscriber line (DSL) customer premises equipment (CPE), the active low-pass filter further operable to attenuate the digital data signals and pass the telephone signals using the electrical power; and an output interface operable to receive the telephone signals from the active low-pass filter and communicate the telephone signals to a telephone; wherein the input interface comprises an RJ-11 interface including electrical connections for a first tip wire, a first ring wire, and for at least two additional wires operable to provide electrical power from the one or more components of the DSL CPE to the active low-pass filter via the RJ-11 interface.