Cisco Systems 15454 14.7.2 External Controls

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Cisco ONS 15454 Reference Manual, R7.0
78-17191-01
Chapter 14 Alarm Monitoring and Management
14.7 14.7.2 External Controls
• Raised When—Open means that the normal condition is to not have current flowing through the
contact, and the alarm is generated when current does flow; closed means that the normal condition
is to have current flowing through the contact, and the alarm is generated when current stops
flowing.
• Description—CTC alarm log description (up to 63 characters).
Note If you provision an external alarm to raise when a contact is open, and you have not attached the
alarm cable, the alarm will remain raised until the alarm cable is connected.
Note When you provision an external alarm, the alarm object is ENV-IN-nn. The variable nn refers to
the external alarm’s number, regardless of the name you assign.
14.7.2 External Controls
You can provision each alarm output separately. Provisionable characteristics of alarm outputs include:
• Control type.
• Trigger type (alarm or virtual wire).
• Description for CTC display.
• Closure setting (manually or by trigger). If you provision the output closure to be triggered, the
following characteristics can be used as triggers:
– Local NE alarm severity—A chosen alarm severity (for example, major) and any higher-severity
alarm (in this case, critical) causes output closure.
– Remote NE alarm severity—Similar to local NE alarm severity trigger setting, but applies to
remote alarms.
– Virtual wire entities—You can provision an alarm that is input to a virtual wire to trigger an
external control output.