Paradyne 3162 DSU/CSU - Manual (Page 26)

Operation
3-2 3162-A2-GB20-30 March 1999
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.
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 System
and Test Status screen 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.