H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 3/34 (2006.01) H04M 11/06 (2006.01)
Patent
CA 2358604
In accordance with the present invention, a system for measuring the transmission characteristic of an xDSL system that implements high-speed data communication over existing copper wires connecting an office and a subscriber includes a pulling device included in the outside line of an xDSL circuit, which is installed in an office, for pulling a subscriber line. A noise level measuring circuit measures the level of cross-talk noise on the subscriber line. A decision circuit determines, based on the level of cross-talk noise measured, whether or not the subscriber line is usable.
Shimura Toshiya
Sudo Minoru
Corporation Nec
Smart & Biggar
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