Optical fiber distribution frame is also called cable tray fiber box, cable connection box, optical fiber reception box. It is mainly used for fixing optical cable terminals, providing optical fiber and optical fiber fusion, fiber and pigtail fusion and optical connector transfer, which is equivalent to dividing a cable into a single optical fiber equipment, is in the cable laying terminal protection cable and pigtail fusion box, mainly used for indoor cable through force connection and branch connection and cable terminal fixation, Tail fiber disk storage and protection of the joint.