H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
344/12
H04Q 11/04 (2006.01) H04M 3/24 (2006.01)
Patent
CA 1272520
ABSTRACT. 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.
543265
Ansell John W.
Chopping Geoffrey
Waters Richard N.
Ansell John W.
Borden Ladner Gervais Llp
Chopping Geoffrey
Gec Plessey Telecommunications Limited
Waters Richard N.
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