The Fibre Connection Box on your wall (the engineers will call this the Optical Network Terminator or ONT) is where the fibre comes into your home. The lights on your Fibre Connection Box let you know when everything's working as it should be and can tell you what's wrong if you're having problems with your connection. Take a look at our Fibre Connection Box lights guide below for more information about what the different light combinations mean.
Select your Fibre Connection Box
Select the Fibre Connection Box that's installed in your home for more information about what the lights mean. Some types of ONT can differ in looks depending on the manufacturer, but the lights on your ONT will always be the same.
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