Importance

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Abstract

A protection switching system is disclosed which includes a plurality of telecommunications modules for processing and/or switching telecommunications signals. A first module provides signals to one pair of modules, which are in turn connected to another pair of modules. Each pair of modules includes a working and a standby module. The standby module controls the switching of all the modules in the system which require switching in the event that the standby module is activated. A controller monitor circuit monitors the faults present on the working modules and, if a fault is detected, signals the corresponding standby module, which in turn provides the protection switching.

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First Claim