Method for labelling signals used for detection and measurement of leakage in data transmission xDSL networks and device for detecting and / or measuring leakages labelled with this method

摘要

A method of tagging signals for leakage detection and measurement in xDSL data transmission networks which uses additional signals carrying the tagging information and transmitted in these networks. A narrowband tagging signal or signals are placed in the unused parts of an xDSL signal frequency spectrum or in its proximity.