Patent ID: 6567519
Filing Date: 2003-05-20
Classification: H03H,H04J,H04M

Abstract:
A system for processing an input signal communicated on a telephone line, comprising:an input node operable to receive the input signal, the input signal comprising a first component associated with a first frequency band, a second component associated with a second frequency band higher than the first frequency band, and a third component associated with a third frequency band higher than the second frequency band; a first filter coupled to the input node and operable to receive the input signal, to attenuate the first and third components, and to communicate a first signal substantially comprising the second component; a second filter coupled to the input node and operable to receive the input signal, to attenuate the second component, and to communicate a second signal substantially comprising the first and third components; a third filter coupled to the second filter and operable to receive the second signal, to attenuate the third component, and to communicate a third signal substantially comprising the first component; and an intermediate node coupled between the second and third filters and operable to couple to a fourth filter having an input capacitance that limits the ability of the third filter to pass the second component.