A fiber optic distribution box, also known as a fiber optic terminal box or fiber optic termination box, is a device used to connect and manage fiber optic cables in a network. Need help?Fiber distribution box is suitable for the wiring connection of optical cable and optical communication equipment, through the adapter in the wiring box, the optical jumper leads the optical signal, and realizes the optical wiring function. OTRANS strives to provide you with professional, reliable. Fiber Distribution Hub (FDH): FDH closures are used in fiber-to-the-home (FTTH) networks to distribute fiber optic connections to multiple households. They often include a splitter for signal distribution. To ensure consistent performance and longevity, it is essential to adhere to strict technical specifications.