Zhone Technologies IMACS-200 manual Alarm Filters, Filter Alarm Meaning

System Configuration and Operation Alarms

	Table 3-2. Alarm Filters
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).

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.

System Operation 3-17