Patent ID: 8488593

Claim:
A selective filtering apparatus comprising: an input interface connectable to a source of a composite signal within a first frequency range; a filtering device, coupled to the input interface, comprising a filter and an output interface, the filter being operable to low-pass filter the composite signal and output an output signal within a second frequency range, the second frequency range being a subset of the first frequency range; the output interface being connectable to at least a portion of an in-premises telephone wiring; a triggering module being operable to cause the output interface to selectively output one of the output signal and the composite signal; a bridging module coupled between the input interface and the output interface; comprising: a first interface connectable to the input interface; a second interface connectable to the output interface; and an actuation portion operable to selectively bridge the first interface to the second interface; wherein to cause the output interface to selectively output one of the output signal and the composite signal, the triggering module is operable to cause the bridging module to selectively bridge the output interface to the input interface; wherein said input interface is coupled to said output interface via a first portion of a communication line, the bridging module and a second portion of the communication line; wherein said first interface is connectable to the first portion of the communication line; and wherein said second interface is connectable to the second portion of the communication line.