ADTRAN ATLAS 800PLUS - Manual (Page 38)

Chapter 3. Operation
3-4 ATLAS _ 800 PLUS User Manual 61200226L1-1
Channel Service Unit (CSU) Status
The CSU Status LEDs indicate the status of both network interfaces.
Module Status LEDs
The Module Status LEDs display, by row, the operational condition ( Status ,
Online , and Test ) of each module installed in the option slots.
Online
The
Online LED indicates that the module is available for use or is currently in
use. If the module is manually taken offline, this LED is turned off.
Test (yellow)
One or more ports in a module is in test.
This color light... Indicates this CSU status...
OK (green) Indicates normal, error-free operation of both network
interfaces. If either interface experiences alarms, the
OK LED
remains off.
Test (yellow) Indicates that one of the interfaces 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 at least one of the module ports.
Error (flashing red) The Error LED indicates an error such as BPV (bipolar
violation), OOF (out of frame), or CRC (cyclic redundancy
check).
Alarm (red) Indicates 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alarm condition is no longer valid, the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 or
select
Alarm by pressing Shift+8 . If the alarm conditions have
been corrected, you can view the alarm which caused the
activation of the
Alarm LED under the View History menu.
This color light... Indicates this module status...
Green (solid) The module is OK.
Green (blinking) The module has been disabled by the user.
Red (solid) At least one port on the module has an alarm.
Red (blinking) The module is enabled, but is not responding to the system controller.
Off No module occupies the slot.