Patent ID: 6058162
Filing Date: 2000-05-02
Classification: H04M

Abstract:
A method of providing a measure of the performance of a metallic wireline communication channel comprising the steps of:(a) transmitting a multi-tone power ratio (MTPR) waveform, including the transmission of a pilot tone over said metallic wireline communication channel;(b) receiving said pilot tone transmitted over said metallic wireline communication channel, and processing said pilot tone to derive a reference tone signal;(c) receiving said MTPR waveform transmitted over said metallic wireline communication channel in step (a) using said reference tone signal derived from said pilot tone received in step (b);(d) determining the MTPR for the MTPR waveform received from said metallic wireline communication channel in step (c); and(e) generating a figure of merit representative of at least one of impedance and frequency response of said metallic wireline communication channel in accordance the MTPR determined in step (d).