Detection of Pre-alarm State in Mixed Telephone Network of Electric Power Utility

We describe the operation of ISDN or IP faulty link detector in mixed telephone network of Electric Power Utility. Basic principle of this detector is increased seizing of Power Line Carrier link that is parallel to ISDN or IP link. Main indicators of detector efficiency: the probability of detection of false failure, the probability of detection miss and mean time to failure detection are calculated, verified by computer simulation and discussed.

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W artykule opisano metodę wykrywania błędnego połączenia IP albo ISDN w mieszanej sieci telefonicznej. Zasada detekcji opiera się na zwiększeniu rozmiaru połączenia Power Line Carrier równoległego do ISDN albo IP.