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QR.2
LED FUNCTIONS
Consult the diagram to help interpret LED indications.
PWR - Power
The PWR LED lights GREEN during normal operation, indicating the
reception of power. If the LED is off, the MCC-DFL is not receiving
power.
16 Mb - Ring Speed
Each FOT has a 16 Mb LED. The LEDs lights YELLOW to indicate a
16 Mbps ring speed on the associated FOT. An unlit LED indicates a ring
speed of 4 Mbps on the associated FOT.
P1 And P2 - Ports
Each FOT has P1 and P2 LEDs to indicate the status of the associated
port.
On FOT-A, the P1 LED indicates the status of the RJ45 port and the
P2 LED indicates the status of the fiber ST port.
MCC-DFL
PWR
PWR
P1
P2
16 Mb
16 Mb
P
1
F
O
T
TX
A
P
2
RX
PWR
PWR
P1
P2
16 Mb
16 Mb
TX
P
1
F
O
RX
T
B
P
2
MCC-DFL LEDs
P1
P2
P1
P2
QR-7
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