S320 OCS Repair and Diagnostics Field Guide
Page 19 of 22
4 CATEGORY B ALARMS
Category B alarms require more additional diagnostic screening than Category A alarms and
may require CALIENT Technical Support. Additional information on Category B alarms is
provided in section 4.1.2.
4.1 Alarm Severity
The S320 OCS generates an alarm when it detects a problem with a physical entity or software
component that can potentially compromise system operation. The type of alarm generated
depends on its severity.
4.1.1 Alarm Definitions
The following definitions describe the characteristics of each Category B alarm:
Critical (CR) – This category of alarm is generated when a situation is detected that
affects the operating stability of a component.
Critical alarms can be service-affecting and require immediate corrective action. Existing
cross-connections will not be affected provided the failure is not related to the driver
cards. Depending on the alarm situation, new connections may or may not be allowed.
Major (MJ) – This category of alarm is generated when a situation is detected that
significantly affects the operating stability of at least one component. Typically, areas
of the equipment that are not directly affected by the failed component can continue
operating without disruption.
Major alarms require immediate corrective action to restore the affected component’s
operating stability.
Minor (MR) – This category of alarm is generated when a situation is detected that
minimally affects the operating stability of at least one component. For the most part,
the system can operate normally under this condition, although the affected component
may cause some degradation of service.
Minor alarms require investigation within 24 hours to determine the potential impact on
the equipment and to prevent escalation to a more severe state.
Not Alarmed (NA) – This category of alarm applies to non-service-affecting events that
do not generate an alarm.
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