Paradyne 336x E1 manual System LEDs, Name Color Meaning, Network Interface LEDs

Operation

			Table 3-1
			System LEDs
Name	Color		Meaning
OK	Green	Indicates the current operational state of the E1 NTU.
		ON:	The E1 NTU is operational and has power.
		OFF:	The E1 NTU is performing a power-up self-test or a system failure
			has occurred.
		BLINKING:	A software download is in progress.
FAIL	Yellow	Indicates a system failure or a self-test.
		ON:	A device error/fault is detected or a reset has just occurred.
		OFF:	No system failures are detected.
		BLINKING :	A self-test is in progress.
TEST	Yellow	A system test is in progress.
		ON:	A loopback or pattern test has been initiated either locally, by the
			network, or externally.
		OFF:	No tests are active.

			Table 3-2
			Network Interface LEDs
Name	Color		Meaning
SIG1	Green	Monitors the signal being received from the network.
		ON:	A recoverable signal is being received from the network on loop 1.
		OFF:	The signal cannot be recovered from the network on loop 1 (a Loss
			of Signal condition exists).
SIG2	Green	Monitors the signal being received from the network.
		ON:	A recoverable signal is being received from the network on loop 2.
		OFF:	The signal cannot be recovered from the network on loop 2 (a Loss
			of Signal condition exists).
OOF	Yellow	Monitors Out Of Frame (OOF) conditions on the received network signal.
		ON :	At least one OOF was detected on the signal during the sampling
			period.
		OFF:	No OOFs were detected on the signal during the sampling period.
ALRM	Yellow	Indicates whether an alarm condition exists on the received network signal.
		ON:	An alarm condition (LOS, LOF, EER, RAI, AIS, RMA, MFA) exists on
			the received network signal. Use the Device Health and Status
			command to determine the alarm type.
		OFF:	No alarm condition exists on the network interface signal.

3360-A2-GB20-20 December 1996 3-5