Secure the box with screws (ensure depth ≥40mm). Run incoming fiber cable through the box's entry port. Connect ONT to socket with. Learn how to install a fiber optic termination box step-by-step for FTTH projects. Covers mounting, splicing, routing, labeling, and testing for indoor/outdoor use. Thus, a fiber termination box is used to terminate the optical fiber. Installing a fiber wall socket (also called an FTTH outlet or optical termination point) is critical for maximizing your fiber internet speed and reliability. Post-installation optimization matters —proper router placement, firmware updates, and network security configuration maximize your fiber internet investment.