Corrective maintenance describes the diagnostic and repair procedures to perform in response to a system malfunction. Refer to these OEM documents when performing preventive and corrective maintenance. T1 Interface Card for domestic or the E1 Interface Card for international. Interface Card, which is for use in Japan only. Four Span E1 Interface Card for international.
System logs and statistical reports monitor system performance.
Status LEDs and diagnostic utilities help isolate faults to the subsystem and card level. Replacing cards, as opposed to repairing them, minimizes system downtime. The system software maintains the error log for 30 days. You can recall the log for display or selectively print it using the Maintenance Menu. The administrator or technician can specify which controller's log file to display or print through the Maintenance Menu.