US 7,397,385 B1 · Predicting cable failure through remote failure detection of error signatures

Abstract

Computer systems and techniques for predicting a cable failure in a network system begin by receiving a remote alarm indicator followed by a remote alarm indicator clear as a transmission alarm indicator of an intermittent short duration failure on the transmission path of a circuit. If the transmission alarm indicator is of a duration less than or equal to a preset threshold D it is considered an acceptable short hit transmission alarm. When at least N acceptable transmission alarms have been received and the time stamps of the last N acceptable transmission alarms have been recorded, then a determination is made as to whether N acceptable transmission alarms have been received within a preset time period. A moving window time period is calculated as the difference between the time stamp of the present acceptable transmission alarm K and the time stamp of the [(K−N)+1] acceptable transmission alarm. If the difference is less than or equal to T, a cable error signature is indicated. Based on the cable error signature, a cable failure may be predicted.

Claims3

Dependent claims

A method comprising:

receiving a remote alarm indicator;
receiving a remote alarm indicator clear within a time period D;
setting an indication of a short hit intermittent failure;
determining that N short hits occurred within a time period T;
subtracting a short hit time stamp ((K−N)+1) from a short hit time stamp K to produce an N short hit time period, where K is a count of a number of short hits received;
and
determining that the N short hit time period is less than or equal to the time period T.

4 more elements

Dependencies are inferred from the claim text.

Predicting cable failure through remote failure detection of error signatures

Life of this patent

Predicting cable failure through remote failure detection of error signatures

Life of this patent

Abstract

Claims3