SIP Hardware Installation Manual
18
Document #: LTRT-94701
3000 Series Gateways & Media Servers
2.2.3
Alarm LEDs and ACO Button
Fault detection severity alarm LEDs and an Alarm Cut-Off (
ACO
) button are located on the
Fan Tray module (refer to the figure below), which is housed in the chassis' front panel.
Figure
2-5: Fan Tray Unit with Alarm LEDs and ACO Button
The
ACO
button is used to mute the external Telco alarm relay devices attached to the
Power Entry Module (refer to ''Power Entry Module (PEM/DC/3K)'' on page
). When the
ACO
button is activated (by being pressed), all alarm relays are returned to normal
position, de-activating the alarm relay devices. The chassis LEDs and other device alarm
signals are not affected.
The fault detection alarm LEDs (described in the table below) are connected to the Alarm
and Status blade.
Table
2-6: Chassis Front-Panel Alarm LEDs Description
LED
Color
Status
Description
Green
On Normal
operation.
SYSTEM
Red
On System
failure.
Green
On
No Critical alarms.
CRITICAL
Red
On
(Default when device powered on) Detection of a fault(s)
categorized as “Critical” (i.e., Critical alarm). When this LED
is on, the
MAJOR
and
MINOR
LEDs are also lit.
Green
On
No Major alarms.
MAJOR
Orange
On
(Default when device powered on) Detection of a fault(s)
categorized as “Major” (i.e., Major alarm). When this LED is
on, the
MINOR
LED is also lit.
Green
On
No Minor alarms.
MINOR
Orange
On
(Default when device powered on) Detection of a fault(s)
categorized as "Minor" (i.e., Minor alarm).
