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Is the Fiber Optic Splice Closures the same as the optical fiber terminal box?

The Features of Fiber Optical Terminal Box and Fiber Optic Splice Closures

1. Features Of fiber optical terminal box

Fiber optic terminal boxes are used in telecommunication networks to provide a termination point for fiber optic cables. These boxes come with a variety of features, including:

Cable management

Fiber optic terminal boxes typically have a variety of cable management features, such as cable ties and routing guides, to help organize and protect fiber optic cables.

Splicing and termination

Many fiber optic terminal boxes allow for splicing and termination of fiber optic cables. This enables the connection of different fibers to each other, or to other equipment.

Protection and durability

Fiber optic terminal boxes are designed to protect the fragile fiber optic cables from damage due to environmental factors like moisture, heat, or physical impact.

Easy access

Terminal boxes often have hinged or removable covers to allow easy access to the internal components for maintenance or repairs.


Fiber optic terminal boxes are compatible with a wide range of fiber optic connectors and cables, allowing for greater flexibility in network design and installation.

Size and capacity

Fiber optic terminal boxes come in a variety of sizes and can accommodate different numbers of fiber optic cables, depending on the needs of the network.

2. Features of Fiber Optic Splice Closures

Fiber optic splice closures come with several features that make them ideal for use in fiber optic networks. Some of the key features of FOSCs include:


Fiber optic splice closures are designed to be weatherproof. They can withstand harsh weather conditions such as rain, snow, and extreme temperatures. This makes them ideal for outdoor installations.


Fiber optic splice closures are made of high-quality materials such as plastic, metal, or fiberglass. These materials are corrosion-resistant, making Fapable of withstanding exposure to moisture, chemicals, and other corrosive substances. This ensures that FOSCs provide long-term protection to fiber optic connections.

Easy to Install

Fiber optic splice closures are easy to install and require minimal tools and equipment. They come with detailed installation instructions and can be installed by anyone with basic knowledge of fiber optic technology.

High Capacity

Fiber optic splice closures come in different sizes and can accommodate a large number of fiber optic cables. This makes them ideal for use in high-capacity fiber optic networks.


Fiber optic splice closures are versatile and can be used in different installation scenarios. They can be installed on utility poles, in manholes, on the side of buildings, and even in underground installations.

The difference between fiber optical terminal box and fiber optic splice closures

Optical fiber and optical cable are the most common wire materials in weak power engineering. In order to ensure the normal use of the wire, the connection box is essential. The most common ones in engineering are fiber optic splice closures and fiber optical terminal box. A large number of people do not understand whether the fiber optic splice closures is the same as the fiber optical terminal box. How to distinguish between the two? let’s take a look at the Koran Newsletter to give you an answer. 

The fiber optic splice closures is a connecting part that connects two or more optical cable lines together and has protective components. It must be used in the construction of optical cable lines, and it is one of the very important equipment. The quality of fiber optic splice closures directly affects the quality and service life of optical cable lines. 

The fiber optical terminal box is a device that divides an optical cable into several single optical fibers, which is usually hung on the wall to help the fusion between the optical fiber and the optical fiber, the fusion between the optical fiber and the tail fiber and the transfer of the optical connector, and protect the optical fiber.

The connection box is responsible for the fusion of the optical cable and the optical cable, that is, the entry and exit of the box is the optical cable, while the terminal box is one end into the optical cable and the other out of the tail fiber. 

In addition, the fiber optic splice closures are sealed and waterproof, and can be used outdoors.

There are also many kinds of names for Fiber Optic Splice Closures, such as optical cable connection package, optical cable connector package, optical cable connector box. It belongs to a mechanical pressure sealing joint system, which is mainly composed of a joint box cover, a fixed assembly, a joint box seal assembly and a residual fiber receiving tray. It is a continuous protection device that provides optical, sealing and mechanical strength continuity between adjacent optical cables.

It is mainly used for the straight-through and branch connection of overhead, pipeline, directly buried and other radiation modes of various structural optical cables to protect the connected optical cables. 

Therefore, it is necessary for the connecting box to have the advantages of good sealing, waterproof, earthquake resistance, fire protection, anti-oxidation and so on, so as to enhance the service life of the line, in order to ensure the connection of communication, network, CATV cable television, optical cable network and so on. 

In our daily use, the fiber optic splice closures can be used in many ways, such as buried, overhead, pipeline, well and so on. It is widely used in the optical cable laying application in the scene of network, communication, cable television, optical cable network system and so on.

It is used in telephone system, agricultural telephone network system, data and image transmission system, cable television, indoor cable access connection and power branch line. 

The fiber optical terminal box can be used for the distribution and terminal connection of various optical fiber systems, especially for the distribution of small network terminals connecting optical cables, wiring centers and tail fibers. 

In addition, it can also be used to splice flexible optical cables, protect optical fiber connectors, and share connections with individual customers.

The optical cable terminal box is a device that connects the ends of multiple optical cables to the optical switch, and its quality will directly affect the stability of optical signal transmission. Now the common optical cable terminal box has been further adjusted according to the number of optical cables, with 16, 24 and 48 cores. 

It can be seen that the junction box is often used in the communication machine room. 

As for the optical cable junction box, it is a device connected by two connected optical cables. If the optical cable is damaged at the distance of the room, it can only be kept in use through the junction box. 

In addition, there are also differences in the price of optical cable. 

The communication optical cable junction box is more expensive than the optical cable terminal box. The price of 24 core optical cable terminal box on the market is about 30 RMB, while the price of optical cable junction box is between 40 and 50 RMB. 

The root cause is that the optical cable junction box is a four-sided connected equipment. When dealing with emergency optical cables, it is necessary to finely connect the optical cables on both sides. 

However, the optical cable terminal box only needs to weld the inner cable core in the disk. Save a lot of cable welding work, the price will naturally be lower than the branch box.


Distribution box and terminal box are the central products in the field of optical cable transmission, which play an important role in ensuring the stability of optical cable signal. 

Outdoor optical cable protection engineers should also master the differences and connections between them, so that we can improve work efficiency and promote the rapid development of communication work when we carry out meticulous operation.

Stephen Xie

Stephen Xie

Hello, I'm Stephen Xie, a sales representative at Hello Signal. I specialize in Passive Optical Components and Cabinet & Racks. I can recommend the most suitable products at competitive prices, ensuring worry-free service. Feel free to contact me with any questions.


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