Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 2 Cisco IGX 8400 Series Cards
Alarm Relay Module
Tip To turn off audible alarms, use the faceplate alarm cutoff (ACO) switch. When the ACO switch is
activated, a faceplate ACO indicator is lit as a reminder to the user. If the ACO switch is activated to
disable the node’s audible alarm output and a second alarm occurs, the audible alarm is re-activated.
Alarm Relay Module Front Card
The ARM front card requires the ARI back card for proper functioning. Alarm relays are controlled by
switch software through control bus commands. Because the ARM does not handle user data, there is no
ARM connection to the cell bus.
The ARM faceplate contains the alarm, active, and fail LEDs, and the ACO and history clear push
buttons (see Figure 2-4 and Table 2-6).
The ARM periodically runs a background self-test to determine the state of the card. If the card fails this
self-test, the faceplate fail LED turns on, and the active LED turns off.
Alarm cutoff – ACO LED
(green)
Interrupts audible relay closed.
Alarm history – Hist LED
(green)
None.
Table 2-5 Alarm Relay Module Alarm Reporting (continued)
Type Severity Indicator ARM Action