SX-200 General Information Guide
206
Revision A
50003510
Maintenance Functions
The objectives of the maintenance functions are to isolate a fault to a replaceable card or
module. Maintenance functions can be performed from either the attendant console or an
RS-232 terminal. A connector for a remote maintenance terminal is provided on the rear panel
of the cabinet.
Information presented on the maintenance terminal includes
•
System date, system time
•
Current system alarm level
•
System identification number
•
Maintenance data display area
•
Command entry line
•
Softkey labels (softkeys 1 to 5)
•
Softkey labels (softkeys 6 to 0).
Information presented on the four-line console LCD display includes
•
System date, system time
•
Command entry line
•
Softkey labels (F1-F5)
•
Softkey labels (F6-F0).
When the console is used for maintenance, the maintenance output data is displayed on the
LCD.
Alarm Indication
The system has four alarm levels: no alarm, minor, major, and critical. Minor alarms indicate
problems affecting a portion of the system, such as failure of a line or trunk circuit. Major alarms
indicate problems causing a system-wide degradation of service. Critical alarms indicate
serious problems that cause automatic activation of System Fail Transfer. The current alarm
status is indicated on the upper right corner of the maintenance terminal, and on the top line
of the attendant console LCD display. The system maintainers can adjust the alarm thresholds
to suit the customer’s requirements. The alarm types are adjustable for different percentages
of devices unavailable.
Alarm LEDs
All peripheral cards such as lines, trunks and receivers have one red alarm LED. The system
lights the LED if the card fails a diagnostic test, or if the card is installed in a wrong or
nonprogrammed card slot.
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