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5-26 Reference Guide
Model No.
Running Head
Alarms System Configuration and Operation
The fourth column of the Alarm Filters Screen contains the filter modifiers info, minor,
major, and crit. This column specifies a level of importance (information only, minor alarm,
major alarm, or critical alarm) for each alarm. These settings are described later in this chapter.
The last column sets the alarm cutoff (ACO) to aco-off or aco-on. These settings are explained
later in this chapter.
The filter in the third column takes precedence over its modifier. If, for instance, you have an
alarm filter set to ignore, the setting of the modifier as info, minor, major, or crit will be
ignored. Refer to system specifications section in this manual for alarms and their meanings.
Note also that Figure 5-17 shows the first of three pages of alarm events that can be edited.
Use of the directional U (pgUp) or D (pgDn) will access other pages of alarms.
Table 5-7. Alarm Filters
Filter Alarm Meaning
PAGE 1
OOS
Out of Service The card, power supply or ringing generator is faulty or has been removed
from the unit.
NOS No Signal Incoming WAN signal is lost.
LOS Loss of Synchronization Frame Alignment is lost.
YEL Yellow Alarm The system has received a Yellow Alarm signal from a remote device.
Usually received when the device loses WAN signal or synchronization.This
alarm also indicates a yellow alarm raised by the OHSU User card ports.
AIS Alarm Information Signal The system has received a Blue Alarm signal from a remote device. Usually
received when the remote or intermediate device has a major failure.
CGA_RED Carrier Group Alarm - Red The local incoming WAN signal has a serious problem and trunk
conditioning is started. After receiving a RED alarm (NOS or LOS) for 2-3
seconds, the system initiates the appropriate trunk conditioning sequence
(see voice cards for information about the TC_CGA setting) and sends a
Yellow Alarm to the remote device. If the system is in drop/insert mode, it
also sends an AIS signal to the downstream equipment.
CGA_YEL Carrier Group Alarm - Yellow The system has initiated trunk conditioning in response to a Yellow Alarm
from a remote device. After 2-3 seconds, the system initiates the appropriate
trunk conditioning sequence (see voice cards for information about the
TC_CGA setting).
ERR Excessive Error Rate The error rate measured by the system has exceeded the threshold set on the
WAN card.
SENSOR Alarm Card Sensor The Alarm Card sensor has received an alarm indication from an attached
device.
SWITCH Switch to redundant card The primary card has failed and the system has switched to the redundant
card.
PAGE 2
RESET
System reset The system has been reset by either loss of power or by a system software
upgrade.
ACO Alarm Cut-Off The ACO option forces you to manually clear certain alarms. Without this
option, self-correcting alarms might not be noticed. When the ACO option is
set to either Report or Log and the modifier is set to Major, alarms will report
normally but will also generate an ACO alarm. If the modifier is set to Minor,
it will not generate the ACO alarm. If the filter is set to Ignore, no alarms will
be generated. This can depend on whether or not CPU is set for latch or
CUR.