Figure 21: At-3606F Port Indicators - Allied Telesis CentreCOM AT-3606F Installation Manual

AT-3606F and AT-3606F/SMA Connectivity
Figure 21: AT-3606F Port
Indicators
24
Each fiber optic port supports the following indicator functions with two
single-color front panel LEDs per port, as shown in Figure 21.
ON LINE (Steady Green)—This indicates that the particular port has a
valid link and is not partitioned.
If you fail to get an ON LINE light, one or more of the following conditions
may be occurring:
Network device at other end is turned OFF (transmitter is
inactive).
Cable is damaged or broken, or attenuation is too high (i.e., too
little light is being received because the cable is too long).
RX Port has failed.
The cabling is incorrect. The RX Port is not connected to TX at the
other end, and you need to reverse the connectors.
RECEIVE (Flashing Amber)—This indicates that the port is receiving
Ethernet packets
Port
1
ON LINE
TX RX
RECEIVE
Port
activity
LEDs