Paradyne ACCULINK 3150, Operator'S Manual, Page: 33 / 234

3. Using the Front Panel
3150-A2-GB24-10 March 2001
3-5
LEDs
There are twelve LEDs on the CSU front panel ( Figure 3-5, CSU LEDs ). A green
LED indicates normal operation. A yellow LED indicates a warning. Conditions are
sampled every tenth of a second.
Figure 3-5. CSU LEDs
The twelve front panel LEDs are grouped into three sections to indicate the status
of the:
„
System LEDs ( Table 3-1 )
„
Network Interface LEDs ( Table 3-2 )
„
DTE Interface LEDs ( Table 3-3 )
Table 3-1. System LEDs
Name Color Meaning
OK Green Indicates the current operational state of the CSU.
ON: The CSU is operational and has power.
OFF: The CSU is performing a power-on self-test or a system failure
has occurred.
BLINKING: A software download is in progress.
FAST BLINK: The carrier-mounted 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.