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Types of Diagnostics
There are three types of diagnostic routines:
•
Power-up
•
Background
•
Directed.
Power-up diagnostic routines consist of the complete set of diagnostics for the system. When
enabled, they are executed upon system power-up and may last several minutes. These
diagnostics will perform a rigorous check on the response and performance of the hardware
and firmware. Any failures will be displayed on the LED display and the RS-232 terminal (when
requested), and logged in a file on the NVRAM.
The background diagnostic routines consist of the complete routines which are run during
system operation. When enabled, the background diagnostics runs once a day at 4 a.m. By
default, the background diagnostics are disabled.
Directed diagnostics are diagnostic routines that are selected by the maintenance person and
then run on specified circuits or devices.
Database Installation and Updates
The database can be installed or updated from a maintenance terminal or PC with terminal
emulation connected to the SX-200 EL or SX-200 ML Maintenance connector. Backup copies
of the database can be stored on a PC or on one of the PC's floppy disks. There are no storage
devices on an SX-200 EL or SX-200 ML system.
Database Storage on Loss of Power
The customer data entry database is stored on RAM and backed up onto a non-volatile RAM
(for up to 68 hours during loss of power) on the MCC. Upon system power-up, the database is
transferred from NVRAM to the MCC RAM. Customer data entry information can also be kept
on a remote PC for retrieval in case of major system failures. Other system information such
as switchhook flash timing, trunk timings, and rotary digit translation for different countries, is
routed to the peripheral control systems for processing.
50003510
Revision A
Maintenance
211
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