Power Connection: The ONT box requires power to operate, so it's plugged into a nearby electrical outlet. Testing and Activation: The engineer tests the connection to ensure it's working correctly and activates the ONT box. Router/Device. FTTP or fiber To The Premises applications have reinforced the importance of reliable and stable fiber optic terminations. They also feature resistance to moisture, impact, chemical exposure. There are a number of factors that need to be considered when it comes to proper installation of a fiber termination box that involves ensuring safety, accessibility, and performance in the same package. Inspect the capacity and consequently, the compatibility with adapters (SC, LC, FC, ST). Here are some basic installation steps: 1.