23-12
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 23 Alarm Management Reference
23.7 External Alarms and Controls
Suppression causes the entity alarm to behave like a Not Reported event. This means that the alarms,
having been suppressed from view in the Alarms window, are now only shown in the Conditions window.
The suppressed alarms are displayed with their usual visual characteristics (service-affecting status and
color-coding) in the window. The alarms still appear in the History window.
“NTP-G70 Suppress Alarms or Discontinue Alarm Suppression” procedure on page 8-29
.
Note
Use alarm suppression with caution. If multiple CTC or TL1 sessions are open, suppressing the alarms
in one session suppresses the alarms in all other open sessions.
23.7 External Alarms and Controls
External alarm inputs can be provisioned on the Alarm Interface Controller–International (AIC-I) card
for external sensors such as an open door and flood sensors, temperature sensors, and other
environmental conditions. External control outputs on these two cards allow you to drive external visual
or audible devices such as bells and lights. They can control other devices such as generators, heaters,
and fans.
Up to 12 external alarm inputs and four external controls are available with the AIC-I card. If you also
provision the alarm extension panel (AEP), there are 32 inputs and 16 outputs. The AEP is compatible
with the ONS 15454 ANSI shelf only. It is not compatible with the ONS 15454 ETSI shelf.
“NTP-G72 Provision External Alarms and Controls on the Alarm Interface
Controller-International Card” procedure on page 8-32
23.7.1 External Alarms
You can provision each alarm input separately. Provisionable characteristics of external alarm inputs
include:
•
Alarm Type—List of alarm types.
•
Severity—CR, MJ, MN, NA, and NR.
•
Virtual Wire—The virtual wire associated with the alarm.
•
Raised When—Open means that the normal condition is no current flowing through the contact, and
the alarm is generated when current does flow; closed means that 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.
Summary of Contents for ONS 15454 DWDM
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