Paradyne 3161-B3 - Manual (Page 40)

3. Operation
3-6 February 2001 3160-A2-GB21-90
Table 3-1. System LEDs
Name Color Meaning
OK Green Indicates the current operational state of the DSU/CSU.
ON: The DSU/CSU is operational and has power.
OFF: The DSU/CSU is performing a power-up self-test or a
system failure has occurred.
BLINKING: A software download is in progress.
FAST BLINK: The carrier-mounted DSU/CSU is currently
selected by the SDCP.
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
SIG Green Monitors the signal being received from the network.
ON: A recoverable signal is being received from the network.
OFF: The signal cannot be recovered from the network (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, Yellow, AIS) 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.
EER Yellow Indicates the Excessive Error Rate (EER) has been exceeded on
the network interface.
NOTE: This LED is only valid when ESF framing is being used.
ON: The EER has been exceeded on the network interface.
OFF: The EER has not been exceeded on the network interface.