User's Manual

Corecess 3221 Installation Guide
6
LED Operations
When you have finished cabling, turn on the Corecess 3221 pressing the power switch on the back
panel of the Corecess 3221 to the ON position.
And then, check the status of the four LEDs on the front panel by the following table:
LED Color Status Description
PWR ON DC power is being supplied to the Corecess 3221.
LINK ON The Corecess 3221 is connected to VDSL network.
TEST OFF The loopback test is finished.
LAN ON The Corecess 3221 is connected to the PC normally.
DATA
Green
Blink
Data is being sent to or received from the Corecess 3221 through
the VDSL network.