The router s fiber optic port is not lit

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What to check: Make sure the power cable is securely plugged into both the ONT and a working wall outlet. This document describes how to troubleshoot fiber optic interfaces by addressing some of the fiber optic module and cabling specifications. If an Internet or LAN port isn't working correctly on your router, you can use an Ethernet cable to perform a loopback test and check the port. If you're experiencing connectivity problems and your PON light is not stable, this video will provide you with step-by-step instructions to diagnose and. The lights on each differ slightly, depending on which version is installed within your property.

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