H - Electricity – 04 – L
Patent
H - Electricity
04
L
340/73, 324/58.0
H04L 12/26 (2006.01) H04L 1/24 (2006.01) H04L 12/28 (2006.01)
Patent
CA 1338742
Method and apparatus is disclosed which inexpensively and conveniently tests ordinary twisted-pair (TP) telephone wires installed in a premises for suitability interconnecting elements of a high-speed local area network (LAN). The method eliminates the need to trace the wires or to disturb them in any way. Signals are transmitted onto the near end of the TP wires and are reflected from their open far ends. The received reflected signal,from a selected TP wire is compared against the transmitted signal and the TP wire is deemed satisfactory if the comparison shows a bit error rate (BER) less than a predetermined upper limit. Preferably the method is used in conjunction with a directional coupler connected to a transceiver which conducts the signal generated by the transceiver onto the TP wires and conducts the reflected signal from the selected TP wire to a receiver portion of the transceiver.
595738
Hewlett-Packard Company
Sim & Mcburney
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