Security arrangement for a telecommunications exchange system

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United States of America Patent

PATENT NO 4858223
SERIAL NO

07170384

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Abstract

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A security arrangement 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.

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Patent Owner(s)

Patent OwnerAddress
PLESSEY COMPANY PLC THEVICARAGE LANE ILLFORD ESSEX IG1 4AQ

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ansell, John W Poole, GB2 3 15
Chopping, Geoffrey Wimborne Minster, GB2 30 277
Waters, Richard N Bournemouth, GB2 1 2

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