Excavating
Patent
1995-12-29
1998-06-16
Chung, Phung M.
Excavating
371 481, 379113, 379309, G06F 1100
Patent
active
057682844
ABSTRACT:
The invention features an apparatus and method for detecting recording errors in a telephone network that provides services to a plurality of customers, the method comprising: recording information output by the telephone network relating to the provision of a service to the customers, the information having a periodic pattern; identifying disturbances in the periodic pattern that persist for longer than a predetermined time period; and generating an alarm when the identified disturbances exceed a threshold. Th invention also features using a model to generate a forecast of information that will be output by the network in a time period that has not yet occurred utilizing information recorded during a previous time period, the model including a plurality of states representing disturbances in the periodic pattern, each state representing a disturbance having a different persistence. The system obtains information output by the telephone network relating to the provision of the service to the customers during a time period; compares the forecast with the information obtained during the time period to generate a deviation; uses the deviation to update each of the states; and generates an alarm when a selected one of the states exceeds a threshold.
REFERENCES:
patent: 4558379 (1985-12-01), Hutter et al.
patent: 4858120 (1989-08-01), Samuelson
AT&T Corp
Chung Phung M.
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