Verilink DIU 2130 (880-503297-001) Product Manual - Manual (Page 43)

Verilink 4-1
Chapter
4
Troubleshooting
Controller card(s) poll the various modules for alarms. If alarm
reporting is enabled for the node and for the module(s), the node
controller card retrieves and sends the alarm to Access Manager
2000, Node Manager 2000, or an SNMP agent.
An alarm list is provided under the alarms displays of the various
options of AM2000, NM2000, SNMP, or the Craft interface.
Alarms can also be automatically sent to a specified printer by
setting up the printer address in the various management utilities
menus.
Near End Loop
LED
The Near End Loop LED lights amber when the associated data port
is looped on the DIU.
Far End Loop LED The Far End Loop LED lights amber when the associated data port is
looped at the far-end DIU. This occurs only if the loop-up command
was sent by the near-end DIU to the far-end DIU over the T1 circuit.
STAT LED The STAT (DIU 2130 status) LED is a tri-color indicator which shows
one of the following conditions for each data port:
• Green for 6 Seconds, then 2 Flashes of Red (repeated)
—This indicates
that there is a loss-of-signal on the data port.
• Green for 6 Seconds, then 3 Flashes of Red (repeated)
—This indicates
that the DIU 2130 has a low battery. This alarm will only be
displayed both STAT LEDs.
NOTE: If the STAT LED has a low battery alarm and a loss-of-signal
alarm at the same time, the LED will flash in the following
order:
Solid Green (6 sec.), 2 Red Flashes, Out (2 sec.), 3 Red Flashes
(repeated).
• Green
—DIU is working properly (normal operation).
• Flashing Green
—DIU is accessed by a master NCC or SCC
thumbwheel switch. Both the PORT 1 and PORT 2 STAT LEDs
flash green during this time.
• Red
—DIU is faulty or problem in equipment connections.
Replace the DIU.