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The difference between optical cable terminal box and optical cable splice box

Among many communication engineering equipment, the optical cable terminal box and the optical cable splice box are two basic equipment that look “similar”. In fact, they are not. What is the difference between the optical cable terminal box and the optical cable splice box? Next, let’s take a look together.

Since the outdoor equipment adopts the form of overhead cable installation, there will be redundant communication cables between each cable terminal, and the main function is for backup. At the same time, there is a square black device on the top of the support column, which becomes an optical cable splice box. The number of cores and cable types on both sides need to be shared to ensure the normal operation of the next cable. The cable terminal box refers to the end of the cable. When it enters the equipment for transmission, each optical cable can be divided into several optical fibers. The optical cable becomes the central equipment for transmitting optical fiber and becomes the optical cable terminal box. But it is the most basic and common transmission medium in optical cable transmission engineering.

Simply put, the optical cable splice box is the optical signal transmitter, and the optical cable terminal box is the optical signal receiver. The two have different positions and functions in the optical signal transmission process.

To understand the difference between the two, we also need to understand how optical signals are transmitted. Take fiber-to-the-home (FFTP) as an example. Fiber to the home (FTTP) also refers to fiber to the home (FTTH), a broadband telecommunications system. Generally speaking, this system is sent from the front end of the operator, then transmitted through optical cable equipment, through layers of channels, and finally arrives at the building and then to your home, so that you can watch TV and surf the Internet. And in the process you can see what roles the two play. First of all, the central office equipment (OLT) in the computer room is connected to the optical fiber trunk line, and the optical signal is sent from here, and then through the outdoor optical cable, it is connected to the optical cable transfer box placed on the road or in the community, and the outdoor optical cable mentioned here, then It is the optical cable splice box, which acts as an intermediary to transmit optical signals to various required areas in an orderly manner. Next, after the optical signal reaches the optical cable transfer box in the community, the optical cable distribution box in the corridor will distribute it to the residents on the floor. Finally, the optical signal will be transmitted to the optical cable terminal box, that is, it will arrive at your home. At this time, the optical cable terminal box, as the carrier of information transmission, fully realizes the process of fiber-to-the-home. Finally, due to the different functions of the two, in order to achieve their respective goals, they are slightly different in appearance and internal structure.

As mentioned above, there are some differences in the physical characteristics of terminal boxes and splice boxes. Therefore, their scope of application is also different. In addition, there are differences between the two in terms of cable prices. Fiber optic splice closures are more expensive than fiber optic termination closures. The root cause is that the optical cable splice box is a four-sided connection device. When dealing with emergency optical cables, it is necessary to carefully connect the optical cables on both sides. However, for the optical cable terminal box, it is only necessary to weld the inner cable core in the tray. It saves a lot of cable welding work, and the price will naturally be lower.

In short, the optical cable splicing box and terminal box are indispensable equipment in the fiber-to-the-home process, which plays a great role in ensuring the stability of the optical cable signal. The two complement each other and achieve each other. Both are important products in the communication industry, but they have different functions and functions, and the two cannot replace each other.