ZyXEL Communications Multi-service Access Platform MSAP2000 - Manual (Page 218)

9. Network Management System (NMS) Functions
MSAP2000 Technical Manual V3.0 9-4
9.4. Fault Management (FM)
The Fault Management (FM) function automatically detects
abnormal occurrences and system faults, and then generates
alarm signals to notify the administrator that System maintenance
is required.
Alarm Detection
MSAP2000 possesses self-diagnostic, auto-detection, and
alarm-generation functions. When the Alarm detection function
is triggered, the System will determine whether or not an error has
occurred. Errors may be either permanent (such as damaged
hardware, or errors induced by inappropriate use of software), or
temporary (such as poor transmission quality due to faulty
transmission circuits). MSAP2000 will continuously diagnose its
System for faults, and it will generate warnings in the event of fault
detection. Warnings include: Missing Card, Card Type
Mismatch, Loss of Signal (LOS), Loss of Frame (LOF), Remote
Alarm Indication (RIF), and Illegal Signaling, etc. MSAP2000 will
also monitor and maintain the System’s transmission quality.
The User will be able to setup a TCA threshold via NMS and LCT,
and any alarm notifications will be automatically saved as
historical data.
Alarm Processing
When an alarm is detected, the System will record the alarm
occurrence time, as well as the alarm severity level. Alarm levels
are categorized into three types, namely Critical Alarms, Major
Alarms, and Minor Alarms. Alarm levels can be provisioned by
the administrator, according to their severity levels.
Besides categorization by Alarm levels, OptiCore
™ also
categorizes Alarms into five types, based on their occurrence
location: Topological Alarms, Node Alarms, Interface Alarms,
Circuit-Pack Alarms, and Total Alarms. These Alarm
categorizations can help Users to easily monitor the immediate
System status.
Alarm Reporting
Alarm occurrences and Alarm terminations can be reported via
LCT and NMS; report contents will include the Alarm occurrence
time, Alarm severity level, and equipment-related information.
Alarm reports will automatically be saved as Alarm records.
Alarm Input Port
MSAP2000’s COT and RT includes 7 external Alarm input ports,
which will send Alarm signals when the following alarms take
place: Door opening Alarm, Power failure Alarm, Temperature
abnormal Alarm, Flood Alarm, Fan abnormal Alarm, and Smoke
detection Alarm. The administrator will be able to provision
alarm level settings, and the alarm reports will be transmitted back
to the NMS and LCT, to be stored as Alarm records.
Alarm Output
MSAP2000’s COT includes 5 Alarm contact relays, which can
initiate Audio and Visual Alarm indicators. When Alarms with the
same severity level occur in different RTs, they will be relayed on
the same contact point on the COT end. The Alarm reports
shown on the LCT and NMS will indicate the Alarm type.