Line testing apparatus and method

摘要

The line test apparatus includes a PC ( 5 ) which stores known line test signature parameters for a number of known fault conditions in which by application of varying signals to a line pair ( 2,3 ) under test and capturing parameters during a period in which varying signals are applied to the line via a test head ( 1 ), an estimate of the state of the line can be made. A remote unit ( 6 ) located at a switch or exchange may also be used to complete the automated scanning of parameters of a line in response to various electrical stimuli. The invention is particularly effective at determining faults which are "dynamic" as well as those which are permanent until repaired.