nbn® FTTC Connection Box Status Lights

Checking the status lights on your nbn Connection Box (NCB) for nbn FTTC can be useful for troubleshooting.

Note: You may need to slide back the panel to see the status lights.

NBN FTTC NCD lights
Light State Meaning
LAN Off No power.
Blue Successful connection between your NCB and modem. This light will flash during data transfer.
Amber Successful connection between your NCB and modem. This light will flash during data transfer.
DSL Off No connection to the network.
Blue Successful connection to the network.
Connection Off No power.
Blue Successful reverse power to outdoor nbn equipment.
Red There's an issue with the reverse power. Please call us on 1300 997 271 as we'll need to lodge a ticket with nbn®.
Power Off No power.
Blue Your NCB has power.

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