External Alarm Input; External Control Output; Virtual Wires For External Alarms In Mixed Networks - Cisco ONS 15600 Reference Manual

Chapter 11 Alarm Monitoring and Management
You provision external alarms and controls in the node view Maintenance > Alarm Extenders window.
Up to 16 external alarm inputs and 16 external controls are available. The external input/output contacts
are located on the CAP/CAP2 attached to the ONS 15600 SDH backplane.

11.6.1 External Alarm Input

You can provision each alarm input separately. Provisionable characteristics of external alarm inputs
include:
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11.6.2 External Control Output

You can provision each alarm output separately. Provisionable characteristics of alarm outputs include:
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11.6.3 Virtual Wires for External Alarms in Mixed Networks

Virtual wires route external alarms to one or more alarm collection centers in a network. External alarms
can be assigned to virtual wires in networks containing only ONS 15600 SDHs or in mixed networks
containing ONS 15600 SDHs and ONS 15454 SDHs. You can view virtual wires in the CTC node view
Maintenance > Alarm Extenders > Virtual Wires window.
When using virtual wires, you can:
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The ONS 15600 SDH supports 16 virtual wires. The ONS 15454 SDH support four virtual wires. In
mixed ONS 15600 SDH/15454 SDH networks, CTC displays the virtual wire information differently
based upon where it is viewed.
78-18400-01
Alarm type
Alarm severity (CR, MJ, MN, NA, and NR)
Alarm-trigger setting (open or closed)
Virtual wire associated with the alarm
CTC alarm log description (up to 63 characters)
Control type
Trigger type (alarm or virtual wire)
Description for CTC
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
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remote alarms.
Virtual wire entities—You can provision an alarm that is input to a virtual wire to trigger an
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external control output.
Assign different external devices to the same virtual wire.
Assign virtual wires as the trigger type for different external controls.
Cisco ONS 15600 SDH Reference Manual, Release 9.0
11.6.1 External Alarm Input
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