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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter2 Common Control Car ds
2.7.2 External Alarms and Controls
2.7.2 External Alarms and Controls
The AIC-I card provides input/output alarm contact c losures. You can define up to 16 external alarm
inputs and four external alarm inputs/outputs (user configurable). The physical connections are ma de
using the MIC-A/P. The alarms are defined using CTC. For instructions, refer to th e “Manage Alarms”
chapter in the Cisco ONS 15454 SDH Procedure Guide.
LEDs on the front panel of the AIC-I indicate the status of the alarm contacts: one LED representing all
the inputs and one LED representing all the outputs. External alarms (input contacts) are typically used
for external sensors such as open doors, temperature sensors, flood sensors, and other environmental
conditions. External controls (output contacts) are typically used to drive visual or audible devices such
as bells and lights, but they can control other devices such as generators, heaters, and fans.
You can program each of the sixteen input alarm contacts separately. Choices include:
•Alarm on Closure or Alarm on Open
•Alarm severity of any level (Critical, Major, Minor, Not Alarmed, Not Reported)
•Service Affecting or Non-Service Affecting alarm-service level
•63-character alarm description for CTC display in the alarm log. You cannot assign the fan-tray
abbreviation for the alarm; the abbreviation reflects the generic name of the input contacts. The
alarm condition remains raised until the external input stops driving the contact or you unprovision
the alarm input.
You cannot assign the fan-tray abbreviation for the alarm; the abbreviation reflects the generic name of
the input contacts. The alarm condition remains raised until the externa l input stops driving the contact
or you provision the alarm input.
The output contacts can be provisioned to close on a trigger or to close manually. The trigger can be a
local alarm severity threshold, a remote alarm severity, or a virtual wire, as follows:
•Local NE alarm severity: A hierarchy of Not Reported, Not Alarmed, Minor, Major, or Critical
alarm severities that you set to cause output closure. For example, if the trigger is set to Minor, a
Minor alarm or above is the trigger.
•Remote NE alarm severity: Same as the local NE alarm severity but applies to remote alarms only.
Green/Red PWR B LED When green, indicates that a supply voltage within the specified range has
been sensed on supply input B. It is red when the input voltage on supply
input B is out of range.
Amber INPUT LED When amber, indicates that there is an alarm condition on at least one of the
alarm inputs.
Amber OUTPUT LED When amber, indicates that there is an alarm condition on at least one of the
alarm outputs.
Green RING LED The green RING LED on the local orderwire (LOW) side is flashing when a
call is received on the LOW.
Green RING LED The green RING LED on the express orderwire (EOW) side is flashing when
a call is received on the EOW.
Table2-14 AIC-I Card-Level Indicators (continued)
Card-Level LEDs Description