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1. (WO2001001597) QUALIFYING TELEPHONE LINES FOR DATA TRANSMISSION

Pub. No.:    WO/2001/001597    International Application No.:    PCT/GB2000/002492
Publication Date: Fri Jan 05 00:59:59 CET 2001 International Filing Date: Sat Jun 24 01:59:59 CEST 2000
IPC: H04B 3/48
H04M 3/30
Applicants: TERADYNE, INC.
FAULKNER, Roger
Inventors: FAULKNER, Roger
Title: QUALIFYING TELEPHONE LINES FOR DATA TRANSMISSION
Abstract:
The method assesses the suitability of customer telephone lines (12, 13, 14) for data transmission. The method includes selecting a telephone line having tip and ring wires by means of a computer (30) and switch (15), and electrically connecting the tip and ring wires together at a test access (29) adjacent one end of the selected line to produce a common mode configuration. Single-ended electrical measurements are performed on the wires in the common mode configuration by a measurement unit (27) connected to the test access (29) to determine an electrical property of the wires from the measurements.