Optical fiber terminal box is widely used in local telephone, rural telephone network systems, data and image transmission systems, CATV cable TV series, used for direct connection and branch connection of indoor optical cable, and plays the role of pigtail storage and protection joint. It is made of cold-rolled steel plate by electrostatic spraying, with a reasonable design structure and beautiful appearance.

　　In practice, the terminal box can be used as an indoor joint box, but the joint box is rarely used as a terminal box. The uses are different.

　　1. The junction box can be divided into an optical cable junction box and a cable junction box. Their functions are used in the front-end wiring of the user.

　　2. The splice box generally refers to the optical cable splice box, also called the optical cable splice box. In some places, especially the broadcasting system, it is also called the optical splice package. Its function is to protect the optical cable joint from external damage. The distribution frame is also divided into optical cable distribution frame and cable distribution frame, which also functions like a junction box, but it is used in the operator's computer room.

　　basic skills

　　The optical fiber terminal box as the terminal equipment of the optical cable line should have 4 basic functions.

　　①Fixing function After the optical cable enters the rack, the outer sheath and reinforcing core shall be mechanically fixed, the ground wire protection component shall be installed, the end protection shall be carried out, and the optical fibers shall be grouped and protected.

　　②Splicing function After the optical fiber drawn out of the optical cable is spliced ​​with the pigtail cable, the redundant optical fiber is coiled and stored, and the fusion splice is protected.

　　③Adjustment function Plug the connector attached on the pigtail cable to the adapter, and realize the optical path docking with the optical connector on the other side of the adapter. Adapters and connectors should be able to be plugged and unplugged flexibly; optical paths can be freely deployed and tested.

　　④Storage function Provide storage for various cross-connected optical cables between racks, so that they can be placed regularly and neatly. The optical fiber terminal box should have appropriate space and method, so that this part of the optical connection cable can be clearly routed, easy to adjust, and can meet the requirements of the minimum bending radius. With the development of optical fiber networks, the existing functions of optical fiber terminal boxes can no longer meet many new requirements. Some manufacturers add some optical fiber network components such as optical splitters, wavelength division multiplexers and optical switches directly to the optical fiber terminal box.