Clock signal switching method for telecommunication

摘要

The method involves switching between a number of input clock signal (Clock1IN, Clock2In) with the same pulse-pause ratio. A monitoring unit detects failure of the employed input clock signal and the switching to a different input clock signal is initiated. The input clock signals are synchronised in phase, with provision of a signal upon phase synchronisation of a replacement input clock signal with a preferred main input clock signal, to allow the switching to the replacement input clock signal.