For a fiber optic connection, you need an optical network terminal (ONT), a router, and appropriate Ethernet connections for wired devices. Your service provider typically supplies the ONT, but you may need to purchase enterprise-grade routers and switches for business. Fiber optic internet is generally installed in the following 5 steps, which we'll dive deeper into throughout the article: A technician checks your area and prepares the connection from the neighborhood fiber network. A standard cable or DSL modem's job is to convert electrical signals into digital data that your devices can understand. This is where a cable modem is needed. For cable internet, the modem. This guide walks you through the complete fiber installation process, from checking availability to optimizing your Wi-Fi network performance.