[New post] What do the lights on my OpenReach Full Fibre modem mean?

David Artiss posted: " Congratulations! If you're reading this then I'm guessing you've upgraded to Full Fibre, or FTTP (Fibre to the Premises) as it's also known. With vastly superior speeds over traditional fibre broadband, it's slowly rolling out across the UK. One aspec" New post on The Big Tech Question What do the lights on my OpenReach Full Fibre modem mean? by David Artiss Congratulations! If you're reading this then I'm guessing you've upgraded to Full Fibre, or FTTP (Fibre to the Premises) as it's also known. With vastly superior speeds over traditional fibre broadband, it's slowly rolling out across the UK. One aspect of the installation is a wall mounted modem (known as an ONT - Optical Network Terminal), which goes between the fibre connection outside and your router. No matter which ISP you're with, OpenReach will have installed this for you and it will be one of their branded boxes. They've gone through a number of different models but, right now, are installing a compact little box made by Nokia. This is what it should look like... Yes, this is mine. Underneath the box, from left to right, are 3 connectors - power, optical fibre in, LAN out. That last one is what goes to your router. 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 what those lights really mean... Light State What it means Power On The ONT has power Power Off There is no power to the ONT. Check the power cable is properly in (the left-hand most one) and that the mains connection on the other end is switched on. LOS Off You have a working fibre connection LOS On You have a fibre connection issue - check the fibre connection in the bottom of the ONT. PON Off No network connection has been made. PON On You have a working network connection. PON Flashing The ONT is negotiating a connection on the network. You'll find this might happen a few times after initial installation. LAN Off There is no data transmitter to your router - check the LAN cable! LAN Flashing The shows that data is transmitting successfully to your router So, a full working connection should look like this... Light State Power On solidly LOS Off PON On solidly LAN Flashing READ NEXT: Can you get Sky without a satellite dish in the UK? David Artiss | June 7, 2021 at 12:00 pm | Tags: BT, Full Fibre, Lights, Modem, Openreach | Categories: Broadband, Hardware | URL: https://wp.me/p9h7Ig-55Q Comment    See all comments Unsubscribe to no longer receive posts from The Big Tech Question. Change your email settings at Manage Subscriptions. Trouble clicking? Copy and paste this URL into your browser: https://bigtechquestion.com/2021/06/07/broadband/what-do-the-lights-on-my-openreach-full-fibre-modem-mean/