SECURITY ARRANGEMENT FOR A TELECOMMUNICATIONS EXCHANGE SYSTEM

摘要

. SECURITY ARRANGEMENT FOR A TELECOMMUNICATIONS EXCHANGE SYSTEM. The security arrangement is for a telecommunications system having two security planes, a plurality of peripherals, a plurality of peripheral communication controllers; and switching arrangements interconnecting the peripheral communication controllers. To determine a faulty security plane, a duplex path is provided between the controllers, and using this path, a controller automatically performs path checks on one of the security planes. If the plane is found to be not faulty, the controller sends data associated with that plane to the peripheral with which it is in communication.