Replace the fiber optic cable with a network cable for the router

You cannot directly replace a fiber optic cable with a standard Ethernet cable; an Optical Network Terminal (ONT) is required to convert fiber signals into electrical signals that Ethernet can carry.Why Direct Replacement Isn't PossibleFiber optic cables transmit data as light pulses, while Ethernet cables transmit data electrically. Because of this fundamental difference, a standard network cable cannot carry the fiber signal directly to your router. Attempting to bypass the fiber connection will result in no internet connectivity .How Fiber Connects to Your RouterFiber Line to Home: Your ISP runs a fiber cable to your home, terminating at a wall outlet or network interface device (NID), .Optical Network Terminal (ONT): The ONT converts the light signals from the fiber into electrical signals compatible with Ethernet .Ethernet Connection to Router: From the ONT, a standard Ethernet cable (CAT6 or better) connects to your router's WAN port, enabling internet access for your devices .Options for Using Ethernet Instead of FiberWhile you cannot replace fiber with Ethernet directly, you can:Use the ONT as a bridge: Keep the fiber connection to the ONT and run Ethernet from the ONT to your router. This is the standard setup for most homes .Fiber-to-Ethernet extenders: In specialized setups, fiber can be converted to Ethernet over longer distances using media converters, but this still requires the ONT or a similar device at the fiber endpoint .All-in-one gateway devices: Some ISPs provide a combo unit that integrates the ONT and router, allowing Ethernet output without separate conversion .Key ConsiderationsRouter Compatibility: Ensure your router supports the speeds provided by your fiber connection; using a low-speed router may bottleneck performance .Cable Quality: Use CAT6 or higher Ethernet cables to maintain high-speed performance from the ONT to the router .Distance Limitations: Ethernet cables have a maximum reliable length of about 100 meters; fiber can span much longer distances without signal loss .ConclusionYou cannot simply replace a fiber optic cable with a network cable because the signal types are incompatible. The correct approach is to use an ONT to convert fiber signals to Ethernet, then connect your router via a high-quality Ethernet cable. This setup ensures full-speed, reliable internet while maintaining the advantages of fiber connectivity .