ADTRAN 1200305L1 system manual Module Status, Module Online, Module Test

Section 2, Engineering Guidelines		ATLAS 550 System Manual
	Table 3. ATLAS 550 LEDs (Continued)
For these LEDs...	This color light...	Indicates that...
Network Module	Green (solid)	the network interface is operating normally with error-free
Status		operation. If the interface experiences alarms, the OK
		LED remains off.
	Yellow (solid)	the interface is operating in a test mode. This includes a
		self-test, a test pattern, or a test loopback. When
		illuminated, this LED also indicates that normal data flow
		is not occurring in the module ports.
	Red (blink)	an error such as BPV (bipolar violation), OOF (out of
		frame), or CRC (cyclic redundancy check) has occurred.
	Red (solid)	an alarm condition has been detected. When the alarm
		condition is no longer valid, the OK LED illuminates. To
		view an alarm condition, select the active alarm menu
		item. If the alarm conditions have been corrected, you
		can view the alarm which caused the activation of the
		ALARM LED in the system log.
Module Status	Green (solid)	one or both modules (in the case of a Resource Module)
		are OK.
	Green (fast blink)	one or both modules (in the case of a Resource Module)
		have been set offline by the user.
		OR
		one or both modules (in the case of a Resource Module)
		have invalid flash memory.
	Red (solid)	a port on the installed module is currently in alarm.
	Red (fast blink)	one module has no response, has been removed, or is
		not supported.
	Red (slow blink)	one module is not ready.
	Off	no module occupies the slot.
Module Online	Green (solid)	one or both modules (in the case of a Resource Module)
		have an active connection.
	Green (fast blink)	one module has invalid flash memory or is downloading
		firmware.
	Green (slow blink)	one module has an active connection.
Module Test	Yellow (solid)	one module is in a test mode.

28 © 2002 ADTRAN, Inc. 61200305L1-1F