Trunk cable fault detection and reconfiguration arrangement in a ring commnications network
A ring communications network having a plurality of line concentrators (10) each including a ring-in port (16), a ring-out port (18), and a plurality of station ports (20), includes the feature of being able to detect a fault in the trunk cable between concentrators and reconfiguring the ring to byp...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
25.01.1994
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Summary: | A ring communications network having a plurality of line concentrators (10) each including a ring-in port (16), a ring-out port (18), and a plurality of station ports (20), includes the feature of being able to detect a fault in the trunk cable between concentrators and reconfiguring the ring to bypass that fault. Fault detection is accomplished by injecting a phantom DC voltage at the ring-out port and sensing whether current due to that voltage is present at both the ring-out port and the ring-in port of the next adjacent concentrator in the ring. |
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Bibliography: | Application Number: US19910753525 |