The answer, in most cases, is no—rewiring your entire house is typically unnecessary. Fiber optic installation is designed to integrate seamlessly with your existing home network, making it an accessible upgrade for most homeowners. Below, we'll break down why rewiring isn't typically needed, when. The optical network terminal (ONT) converts the fiber optic network signal into one that your connected devices can use. It acts as the bridge between your location and the service provider's network. The technician installs the equipment by: Once the ONT is installed, the next step is to set up. Depending on your provider and how they do it in your particular area: they'll either mount an ONT outside in a utility box on the side of your home, or they will mount an ONT/media converter in the garage or basement.