Method and device for generating test signals, network element of a SDH network and SDH network

摘要

First (2.1) and second (2.2) synchronous digital hierarchy (SDH) networks have network elements (1.1-1.6,1.7-1.11) that interlink via data lines (9) within either SDH network. One or more network elements have a device (3) for generating test signals on the transmission side. One network element (1.1) has a monitoring device (4) on the pick-up side to identify an error in a signal fed to the network element on a data line and to report this with an alarm. Independent claims are also included for a synchronous digital hierarchy network with multiple network elements and for a method for generating test signals within a synchronous digital hierarchy network.