Error Logs And Error Messages - AT&T MERLIN LEGEND Reference

Maintenance

Error Logs and Error Messages

There are two types of errors and two types of alarms:
Permanent errors, which cause permanent alarms
Transient errors, which cause transient alarms
A permanent error causes major degradation of service and requires immediate
action. A permanent error is recorded in the permanent error log and causes a
permanent alarm. This permanent alarm can also trigger the external system
alarm, which turns on the red LED on the 800 CO-BRI module for circuit board or
port errors, turns on the programmed alarm LEDs on telephones, and seizes the
programmed alarm facility.
A transient error causes a reduced level of service, but the system continues to
operate normally. If a given threshold is exceeded, a transient error can become
a permanent error. A transient error is recorded in the transient error log.
Both permanent and transient errors are removed from their error logs when the
system returns to normal operation. The user can also manually remove these
errors from their logs while viewing the error log by pressing the Drop button on
the MLX-20L telephone or by pressing ALT-P on the PC used for programming.
Errors
Errors are reported by the automatic maintenance tests that scan the 800 CO-
BRI module's shared memory status registers and counters. Port-related errors
show the specific port affected.
NOTE:
Synchronization and central office-induced errors are tracked only on Digital
Subscriber Lines (DSLs) for which a Service Profile Identifier (SPID) has been
assigned to one of the facilities on the DSL. However, if no SPIDs have been
assigned to any of the facilities on any of the DSLs (for example, on initial system
power-up), errors are tracked on all DSLs until the first SPID is assigned. When
the first SPID is assigned, all alarms for DSLs not associated with SPIDs are
removed.
Error Logs and Error Messages
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