Patent ID: 6134234
Filing Date: 2000-10-17
Classification: H04J

Abstract:
A method to synchronize the network elements in a telecommunications network, the network comprising ofa master network element which provides the network with the master synchronization signal,several slave network elements, each of which produces an internal clock signal and which contain the equipment for receiving the synchronization signal candidates that arrive from several different directions in the network and for selecting the synchronization signal from the candidates,the slave network elements having been connected, regarding information transfer, as a looped network and, regarding the master synchronization signal, as a chain,the method comprising:determining for each slave network element a primary direction, wherein each slave network element synchronizes primarily to the master synchronization signal arriving from this primary direction, anddetermining for each slave network element a secondary direction to which the slave network element transmits the signal that the element has selected as the synchronization signal, wherein each slave network element synchronizes secondarily to the signal that arrives from this secondary direction.