Patent ID: 6124790
Filing Date: 2000-09-26
Classification: H04L

Abstract:
A method for filtering a first alarm having a first plurality of states, wherein said first alarm is in a state of said first plurality of states, comprising the steps of:repeatedly determining said state of said first alarm to form a first pattern of state transitions for said first alarm; andintegrating said first pattern of state transitions to produce a second pattern of state transitions for a second alarm, said second alarm having a second plurality of states, said integrating step comprising the step of:using a pair of hysteresis threshold values for controlling transitions between said second plurality of states;adjusting an integration value based on said first alarm state;comparing said integration value with said pair of hysteresis threshold values; anddefining a first range of values for said integration value such that said adjusting step is limited to values within said first range, wherein said first range of values includes said pair of hysteresis threshold values, and wherein a second range of values defined by said pair or hysteresis threshold values is smaller than said first range of values.