A method of reducing noise and ingress in cable return paths is disclosed
in which the return frequency spectrum is divided into two regions; one
frequency region being for transmissions from in-home devices such as
television settops and personal computers, and another frequency region
being for transmissions from communications devices called coaxial
termination units located between the drop cable and the home coaxial
wiring. By locating blocking filters between the drop cable and home
coaxial wiring, undesirable signals emanating in the home in the second
part of the return spectrum are prevented from entering the cable return
system. The location of the blocking filter reduces the noise in the
second part of the return spectrum substantially and allows the
establishment of reliable telecommunications services on the cable return
in such second part of the return spectrum. The blocking filters can be
incorporated into the coaxial termination unit and the bandwidth of such
filters varied from the head-end to allow more or less bandwidth to be
used by in-home devices.