A splice box is an enclosed housing designed to protect fibre optic splice points in accordance with IEC 61756-1. It accommodates splice cassettes, cable entry points, and optionally couplings for patch cable connections. It contains and protects electrical splices, taps, and conductor terminations, preventing accidental contact and insulating connections. While traditional splice boxes are optimal for permanent point-to-point connections with up to 48 fibres, modern splice modules in 1U form factor support up to 96 fibres and enable flexible expansion. The quality of optical cable joint box directly affects the optical. Optical cable splice box is a popular name, its scientific name is optical cable splicing box, also known as optical cable splicing package, optical cable splicing package and gun barrel.