nbn FTTP Connection Box Status Lights
The article will explain the status lights found on the nbn Connection Box (indoor unit) used for Fibre to the Premises (FTTP) services, which may be useful when troubleshooting nbn FTTP issues.
It will also show you where to find the Connection Box's Serial Number, which may be required to complete your NBN order.
Lifting the cover
nbn FTTP Connection Boxes may have a plastic cover. To open it, gently prise the bottom of the cover away from the two clips holding it in place at the bottom of the unit and then lift the cover upwards.
Once lifted, the Connection Box will be partially covered by casing, but you will still be able to see the status lights and access the ports as shown below.
Location of Serial Number
You'll see a barcode sticker on the right-hand side of the box. The number next to S/N is the Connection Box's Serial Number, as shown below.
Status lights
| Light | State | Meaning | |
| POWER | Off | No power supply. Please note that all other lights will be off if the Connection Box has no power. | |
| Red | Connection Box is operating on backup battery power from the Power Supply unit. If there's no power outage, try troubleshooting. | ||
| Green | Connection Box has power. Sometimes the light may look more orange/yellow than green - this is fine. | ||
| OPTICAL | Off | Connection Box is disabled. Please call us on 1300 455 806 (8AM-8PM Mon-Fri, 9AM-6PM Sat-Sun AET) as we'll need to lodge a ticket with nbn®. | |
| Red | No connection to the network. Try troubleshooting. | ||
| Green | Connected successfully to the network. This light will flash during data transfer. | ||
| ALARM | Off | Connection Box is working, but no devices are connected. | |
| Red | Issue detected. Try troubleshooting. | ||
| Green | Connection Box is working with no issues detected. | ||
| UNI-D 1/2/3/4 | Off | Nothing is plugged into this port. Only one UNI-D port is active for a single nbn service - typically port UNI-D1. If this port doesn't work and you don't know which port was activated for your service, please call us on 13 22 58 for a hand. | |
| Orange | A device capable of up to 1000Mbps is plugged in. This light will flash during data transfer. | ||
| Green | A device capable of up to 10/100Mbps is plugged in. This light will flash during data transfer. | ||
| UNI-V 1/2 | Off | There is no nbn Fibre Phone service, or it's not currently being used. Note: Fibre Phone is no longer sold as of 15 May 2024. | |
| Green | One or more nbn Fibre phones are off the hook (typically because they are being used). | ||
| Flashing | One or more nbn Fibre phones have been off the hook for more than an hour. If no one is on a long phone call, check that your handsets are not engaged and have been returned to the hook or cradle. | ||
| UPDATE | Off | Normal, no action required. | |
| Red | Connection Box has failed to download an update. Please call us on 1300 455 806 (8AM-8PM Mon-Fri, 9AM-6PM Sat-Sun AET) as we'll need to lodge a ticket with nbn®. | ||
| Green | Connection Box is currently downloading an update with no issues. | ||
Are the lights behaving strangely?
If you're seeing some really unusual behaviour such as the lights for unused UNI-D ports lit or flashing despite having nothing connected, have there been recent lightning storms in your area?
If you suspect the Connection Box, its cabling or other nbn equipment have been affected by a lightning strike, please call us on 13 22 58.