Zhone Technologies IMACS-200 - Manual (Page 59)

System Operation 3-17
System Configuration and Operation Alarms
Table 3-2. Alarm Filters
WARNING!Alarm Modifiers
Each alarm may also be designated as I=info, m=minor, M=major or C=crit. The filter
modifier appears on both the active alarm and alarm history screens.
Filter Alarm Meaning
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.
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 ports 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 ports 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 port.
SENSOR Alarm port Sensor The Alarm port sensor has received an alarm indication from an attached
device.
HI-TEMP Temperature Alarm The IMACS-200 has exceeded it’s ability to regulate the temperature in the
unit, and external action is required.
FANFAIL Cooling Fan Failure One of the two supplied fans has failed.
UCA User port/port alarm One or more active ports on a user port are not working properly. Voice ports
will show an alarm for excessive signaling transitions and data ports will
show an alarm for exceeding the data error threshold.
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 the IMACS-200 is set for
latch or cur.
SYNC Clock Sync Alarm The SYNC alarm is generated when either the primary or secondary external
clock source is lost. This alarm is in addition to the condition that lost the
clock source (CGA-RED or OOS).