Comparison of optical fiber distribution frame, terminal box, sub-box and ODF distribution frame
Optical fiber distribution frame, terminal box, fiber box, ODF distribution frame, is an essential part of optical fiber installation and use, these accessories look more similar, and even the way of use has the same place, easy to confuse.
Ⅰ. Similarities
These four connectors have four obvious similarities, such as the main role, which can be summarized as follows:
1, the fixed function of the optical cable into the frame, the outer sheath and strengthening core to be mechanically fixed, install ground protection parts, end protection processing, and the optical fiber grouping and protection.
2, the welding function, the optical fiber in the cable and the tail cable welding, the excess optical fiber will be coiled storage, and the welding joint protection.
3, the adapter and connector can be flexibly inserted and pulled; The optical path can be freely deployed and tested.
4, the appropriate space and way to meet the minimum bending radius requirements.
Ⅱ.The difference
Since there are many similar points in the role, but the shape and installation, there is a clear distinction, we will summarize the four connectors, respectively.
1, optical fiber distribution frame
· Push-pull distribution frame with guide pin MPO male head, with 4 LGX junction boxes, 48 LC multimode OM4 fiber connection ports
Number of conventional ports: 24, 48
Operating environment: Inside a standard cabinet
→ Optical fiber distribution frames are used to connect vertical trunk and horizontal optical cables, generally 19 inches of 1U height rack, usually at least 12.
2. Terminal box
Normal port number: 8 ports, 12 ports
Use environment: wall or desktop
→ The optical fiber terminal box is usually placed at the end of the horizontal optical cable, and the device connected by the optical jumper connected by the coupler in the optical fiber terminal box is the closest connector to the terminal (switching equipment or PC), usually 8 ports.
3, fiber box
Number of conventional ports: 24, 48
Use environment: inside the corridor
→ Optical fiber distribution box is an interface device used to connect the main optical fiber cable to the distribution optical fiber cable outdoors, in the corridor or indoors. It is commonly used in optical network installation of FTTH all-optical network. It is also a small box that we often see in the corridor in our daily life.
4, ODF distribution frame
Conventional port number: 12-1440 cores
Application environment: computer room, regional wiring, residential district FTTH and other large-scale optical fiber wiring.
→ ODF Optical fiber distribution frame is designed for optical fiber communication room optical fiber distribution equipment, with optical cable fixing and protection functions Optical fiber terminal function, cable alignment function, optical fiber core and pigtail protection function.
The device is flexible in configuration, easy to install and use, easy to maintain, and easy to manage. It is an essential device for fiber optic communication cable network terminals or relay points to realize the welding and access of fiber optic cables.
Ⅲ. Summary
Therefore, we can conclude that the difference between these four products mainly lies in two points: the number of interfaces is different and the use environment is different. They themselves do not participate in data transmission, mainly the application environment and the different services of the required ports, installed in the place where they are needed.
