Network Processing Unit (Npu) - Nera WiLink-I Series System Manual

Name
ALARM
WLINK
WACT
SP
IP
ODU1/ODU2 PWR
ODU1/ODU2 ALRM
HOT SWAP
2.2.8

Network Processing Unit (NPU)

The NPU module serves as the central processing unit that manages the base
station's components and the SUs served by it. It also aggregates the traffic from
the AU modules and transfers it to the IP backbone through a dedicated
Gigabit/Fast Ethernet interface.
WiLink-I Modular Base Station System Manual
Table 2-11: AU-IDU LEDs
Description
Alarm indication
Wireless link status indication
IDU transmission indication
Spare
IP activity indication
IDU to ODU Power Indication
IDU readiness for hot swap
removal
Installing the Base Station Equipment
Functionality
¢
Off - AU-IDU is OK
¢
Red - AU-IDU failure
¢
Off - No SU is associated
¢
Green - At least one SU is associated
¢
Off - No IDU transmission
¢
Green - IDU transmission OK
Not Used
¢
Off - No downlink (AU to SU) IP activity
¢
Green (blinking) - Downlink (AU to SU) IP activity
¢
Off - No IDU to ODU power output
¢
Red - IDU to ODU power output failed
¢
Green - IDU to ODU power output OK
¢
Off - IDU-ODU communication OK
¢
Red - IDU-ODU communication failure
¢
Off: Power to the module is not disconnected,
the AU-IDU is not ready for removal
¢
Blue: Power to the module can be disconnected
and the AU-IDU can be safely removed
For instructions on using the HOT SWAP handles
Section 2.2.9
refer to .
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