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. Installing a fiber optic termination box is one of those jobs that looks simple on paper, but it's easy to. Preparing cables for splice closures involves several steps that should be followed in the exact sequence specified by the manufacturer to ensure the cables are properly secured with adequate strain relief and the closure will seal. The cable jacket (or sheath) and strength members of the cable. Fiber cable splicing is the process of permanently joining two optical fibers end-to-end to allow light signals to pass through with minimal loss. It houses splices—either fusion or mechanical—ensuring low attenuation (e. 05 dB for fusion splices) and. In this blog, we will discuss the two types of fiber optic cables and the role of a simple yet essential piece of equipment in the fiber laying procedure-the, the Fiber Termination Box, or FTB.