First, please check that the optical cable which comes through your wall into the ONT hasn't become loose. Now turn the ONT off and on again from the main socket on the wall. Still No Luck?The tables in this article provide detailed information about the possible appearances of the LED lights on each device, the possible causes of each state, and what you should do. Ensure your Fiber Jack is connected to the network and the LED lights are connected and working properly before moving. Understanding LED Indicators on a Fiber Router Let's break down what the common LED lights on a fiber router mean and how they behave: 1. POWER Normal: Solid/stagnant light. If OFF: The router is not powered — check the socket, adapter, or power cable. If you're using a power strip, check. Whether your modem is blinking orange, your router has a solid red light, or you are staring at a mysterious "DS" indicator, you will find the answer below.
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