Chapter 6 Alarms and Events
Message Format
288 SSU-2000 Technical Reference 12713020-003-2 Revision F.01 – January 2007
Message Format
After the Communications module is installed and functioning properly, it monitors
the SSU-2000 and logs events into non-volatile memory, where you can inspect it at
a later date. Events are conditions within the unit or at the interfaces of the unit
which may indicate abnormal operation or a change in the unit’s operational status.
Recurring events may be escalated to alarm status and may require action by the
user. Conversely, alarms may be de-escalated and corrected automatically.
Although every alarm is considered to be an event, not every event is an alarm. For
example, a login is recorded as an event but is not considered to be an alarm. In
this case, no action is required by the user.
The following sections list all alarm and event messages by their designated
numbers, a description of each, and any corrective action to clear the alarm or
condition, if necessary.
TL1 Autonomous Message Format
Figure A-1 shows the structure of a typical TL1 Alarm message.
Figure 6-1. TL1 Alarm and Event Message Structure
With the exception of loss of power alarms (on main chassis and expansion unit) all
alarms are module alarms.
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