If you have our Fibre to the Premises (FTTP) business broadband, you’ll have an Openreach ONT (Optical Network Terminator), also known as an Openreach modem.
As you can see there are 4 lights at the top of the OpenReach Full Fibre modem – Power, LOS (Loss of Service or Loss of Signal), PON (Passive Optical Network) and LAN (Local Area Network – but you know this one, right?). Think of LOS as showing a cut in the fibre connection, whereas PON is indicating your connection at the other end of the network.
Here’s a handy guide to what the lights mean.
|
Power light |
LOS light |
PON light |
LAN light |
What this means |
|
Green |
Off |
Green |
Flashing green |
Everything’s normal. Your ONT is working, your hub is connected, and you’re online. |
|
Green |
Off |
Flashing green |
Off |
Your ONT is connecting. You’ll see this when your FTTP sets up. |
|
Green |
Off |
Green |
Off |
Your ONT is working, but can’t connect to a hub. |
|
Green |
Off |
Off |
Green |
Your hub is connected to the ONT. |
|
Green |
Off |
Off |
Flashing green |
Your hub is connected to the ONT and traffic is flowing between the two. |
|
Green |
Off |
Off |
Off |
Either your hub isn’t connected to the ONT or there’s a fault with the FTTP service. |
|
Green |
Red |
Off |
Off |
There’s a fault with the FTTP service. |
|
Off |
Off |
Off |
Off |
There’s no power to your ONT. |
So, a full working connection should look like this…
| Light | State |
|---|---|
| Power | On solidly |
| LOS | Off |
| PON | On solidly |
| LAN | Flashing |
Having problems connecting? Disconnect the power cables to both your ONT and hub/router for two minutes. Now reconnect them. The lights should settle within a few minutes.
END