The ADSS/OPGW Metal Junction Box, also known as a splicing box or Metal Joint Junction Box, is designed to house fiber core splices for outdoor intermediate optical cables. It connects trunk cables like OPGW to patch panels in control rooms. OPGW) Rax Industry fiber optic cable. Fiber optic cables commonly used in high-voltage transmission lines include all-dielectric self-supporting optical cable (ADSS), fiber optic composite aerial ground cable (OPGW) and the fiber optic composite aerial phase cable (OPPC). ly designed for the spe-cial requirements of fiber optic overhead cables. We have been developing fittings for fib data transmission in such cables takes place via modulated light pulses. It is used by electrical utility companies as a communications medium, installed along existing overhead transmission. Aluminium Alloy ADSS OPGW Fiber Optical Splice Closure The metal joint box are applicable for connection protection of special optical cables,with the functions of direct and branch connection, with the maximum of 6 optical cables, which mainly for overhead rods and towers.