User's Manual

Troubleshooting
30
Indication Possible Cause What to Do
RJ45 port Link and
Activity LEDs are not
lit, or the Activity LED
is not blinking
connection is not being
made between RFS
components
• For the affected port, verify that
all cabling between components
is properly connected:
NCU front
Port 1 iSC
Port 2 Ethernet LAN (WLAN)
Ports 3-8 additional WLANs
NCU back
Ports 1-8 ACUs
Airlink Chassis Unit
The front of the Airlink Chassis Unit (ACU) contains eight RJ45 ports and one
EIA-232 9-pin serial port. The back of the ACU has eight RJ45 ports. Each port is
described in the following table.
ACU front ports Description
RJ45 Port 1 NCU—connects the ACU to the NCU
RJ45 Ports 2-8 not currently used
EIA-232 9-pin serial port for debugging—Customer Service Representative use only