Alarm severity is used to identify the severity level, significance and urgency of an alarm. Alarms come in the following five levels in descending order of severity: critical, major, minor, not alarmed and not reported.
Table 1 shows how to handle the alarms of different severity levels.
Alarm severity |
Definition |
Handling |
|---|---|---|
Critical |
Refers to fault alarms and event alarms that may result in breakdown of the NE or the whole system, such as board failure. |
Should be handled immediately. Otherwise, the system may break down. |
Major |
Refers to fault alarms and event alarms of boards or line in local parts. |
Should be handled timely. Otherwise, the important functions will be affected. |
Minor |
Refers to general fault alarms and event alarms that indicate the operating status of boards or line. |
Such alarms are used to remind the maintenance engineer to efficiently locate the alarm causes and eliminate the possible faults. Warning Refers to fault alarms and event alarms for warning. |
Not Alarmed |
Refers to the fault alarms and event alarms that do not affect the system performance and services but may impose potential impacts on the service quality of the equipment or resources. Some alarms refer to the prompt information of the system when equipment restores to normal, for example, the switching alarm. |
Such alarms indicate operating status of the equipment and require no handling. |
Not Reported |
Refers to alarms that can be neglected. You can query this type of alarms from the NE. |
This type of alarms need not be handled. |
You can take different measures for alarms of different severities. On the U2000 Web LCT, you can redefine the severity level for an alarm as required. You need to adjust the severity for an alarm only when the alarm has severer or less severe impacts than when it is at the original severity level.