Cisco ONS 15454 DWDM - External Controls

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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 23 Alarm Management Reference
23.7.2 External Controls
23.7.2 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.
23.7.3 Virtual Wires
Provisioning the AIC and AIC-I card provides a “virtual wires” option used to route external alarms and
controls from different nodes to one or more alarm collection centers. In Figure 23-4, smoke detectors
at Nodes 1, 2, 3, and 4 are assigned to Virtual Wire #1, and Virtual Wire #1 is provisioned as the trigger
for an external bell at Node 1.