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April 29,2026
FTTA Waterproof ODC Connector Cable Assemblies: Enabling High-Reliability Fiber Connectivity in Harsh Environments
As fiber optic networks continue to expand from traditional telecom backbones into FTTH, FTTx, CATV, enterprise communication, and data transmission infrastructure, protecting fiber splicing points has become an increasingly important part of network engineering. Outdoor fiber connections are exposed to moisture, dust, temperature fluctuations, mechanical stress, and other environmental factors. Without an appropriate enclosure, even a well-designed optical network can experience unnecessary maintenance requirements or reduced operational reliability.
The 144 Core Dome Fiber Optic Splice Closure from Angnet Technology is designed to provide organized protection for fiber cable through, branching, and splicing applications. This dome-type Fiber Optic Splice Closure (FOSC) combines a mechanical sealing structure, vulcanized rubber sealing components, IP68 protection, multiple cable entry ports, and a maximum capacity of 144 fibers. These characteristics make it suitable for demanding outdoor fiber infrastructure where connection protection, cable management, and installation flexibility are essential.
As a professional provider of fiber optic and copper network solutions, Angnet Technology has developed its product portfolio around practical requirements in telecommunications and network infrastructure. The company has more than 10 years of industry experience and specializes in fiber optic cables, connectors, PLC splitters, patch cords, pigtails, MTP/MPO assemblies, and related passive optical components.
For network operators, system integrators, telecom contractors, and fiber distributors, selecting the right fiber optic splice closure is not simply a matter of choosing a box with sufficient fiber capacity. The enclosure must also provide reliable environmental protection, efficient cable routing, adequate bending space, flexible installation options, and convenient access for future maintenance.
A fiber optic network may include hundreds or thousands of individual splicing points distributed across access networks, distribution routes, metropolitan infrastructure, and long-distance communication systems. These points require physical protection because the optical fiber itself is highly sensitive to excessive bending, pulling forces, moisture intrusion, and mechanical damage.
A fiber optic splice closure provides a controlled enclosure around fiber splices and cable transitions. It allows technicians to organize incoming and outgoing cables, protect fusion-spliced fibers, manage slack fiber, and maintain separation between different fiber routes. In outdoor applications, the enclosure also functions as an environmental barrier.
For FTTH and FTTx infrastructure, fiber branching is particularly important. A single feeder cable may need to serve multiple distribution routes or access areas. A properly designed FOSC enclosure allows these branches to be introduced and managed without exposing the optical connections to the surrounding environment.
The 144 Core Dome Fiber Optic Splice Closure is designed specifically for these requirements. Its maximum capacity of 144 fibers provides enough space for relatively high-density fiber distribution while maintaining a structured enclosure format.
A dome-type fiber optic splice closure is an outdoor enclosure designed to protect optical fiber splicing and cable distribution points. Unlike simple indoor fiber distribution boxes, dome closures are engineered for outdoor environments where water resistance, dust protection, mechanical integrity, and installation flexibility are important.
The 144 Core model supports a maximum of 144 fibers, using six splice trays with 24 fibers per tray. This configuration provides a structured approach to fiber management and allows installers to divide fibers into manageable groups during installation and maintenance.
The product is identified as ANFC-144CB, with a body size of approximately 480 × 240 mm, a black exterior, and a PC+ABS enclosure material. The operating temperature range is specified as -40°C to 65°C, supporting deployment across a broad range of outdoor environmental conditions.
For network designers, the 144-fiber capacity is particularly useful when a project requires more than a small local closure but does not necessarily justify a much larger enclosure. The dome structure provides a practical balance between capacity, protection, and installation flexibility.
Environmental protection is one of the most important performance considerations when selecting an outdoor fiber optic splice closure. A closure installed on a utility pole, aerial route, underground chamber, or pipeline manhole can encounter rain, groundwater, dust, humidity, temperature changes, and other environmental conditions.
The ANFC-144CB is specified with an IP68 protection rating. This level of protection is particularly relevant for outdoor telecommunications infrastructure because the closure is expected to maintain a protected internal environment even when installed in locations exposed to water and dust.
The IP68 design is supported by the enclosure's sealing architecture. The product uses vulcanized rubber sealing components together with a screw-pressure sealing structure. Rather than relying on a simple cover or loose-fitting housing, the mechanical sealing design creates controlled compression around the closure interface and cable entry areas.
This approach is important for long-term fiber network deployment. Water ingress can cause significant problems around optical splicing points, especially when combined with repeated temperature changes and long-term exposure to humidity. A properly sealed IP68 fiber optic splice closure helps reduce the risk of environmental contamination reaching protected fiber connections.
For telecom contractors working in regions with high rainfall, seasonal storms, coastal humidity, or underground installation requirements, IP68 protection can therefore be a critical selection factor.
One of the defining characteristics of this model is its mechanical sealing structure. Mechanical sealing can be advantageous for field installation because it provides a straightforward enclosure assembly method without requiring complicated sealing procedures.
The screw-pressure sealing structure allows pressure to be applied to the sealing components during closure assembly. The vulcanized rubber components then help create the required sealing interface around the enclosure and cable entry points.
For fiber technicians, installation efficiency is closely connected to enclosure design. A closure that is difficult to open, seal, or reassemble can increase maintenance time. In contrast, a practical mechanical structure can make installation and subsequent servicing more manageable.
This is especially relevant in distributed FTTH and telecom networks where fiber closures may be installed at many locations. Network operators need a fiber splice closure that not only protects the fiber but also supports practical field operations.
Fiber density is another major consideration when selecting an outdoor closure. The ANFC-144CB provides a maximum capacity of 144 fibers through a configuration of six 24F splice trays.
Each tray can accommodate a defined group of spliced fibers, helping technicians organize the internal fiber routing system. Instead of placing all spliced fibers in one area, the tray-based structure separates fiber groups and provides a more systematic arrangement.
This type of organization can be particularly valuable in high-density telecom applications. When network capacity expands over time, technicians need to identify fiber groups quickly and perform maintenance without unnecessarily disturbing adjacent connections.
The six-tray configuration also provides a practical foundation for network expansion. Depending on the deployment architecture and actual fiber count, not every available fiber position needs to be occupied immediately. This can give project designers additional flexibility when planning future capacity.
For distributors and system integrators, a 144 core fiber optic splice closure can therefore serve applications where both current fiber requirements and future network expansion need to be considered.
Cable entry design directly affects the installation flexibility of an outdoor fiber optic closure. Different projects may require different combinations of feeder cables, distribution cables, drop cables, and branching configurations.
The ANFC-144CB incorporates one mid-span dual-hole port and four round-hole cable entry ports. The product information also specifies four 4 mm grommets capable of accommodating up to 16 drop cables.
This configuration allows the closure to support multiple cable routing approaches. The mid-span port is particularly useful for applications where a fiber cable needs to pass through the closure while selected fibers are accessed for branching or splicing.
This type of arrangement is commonly associated with mid-span branching, sometimes referred to as uncut cable branching. Instead of cutting the entire cable at the closure point, installers can access the required fibers while maintaining continuity for fibers that continue along the main route.
For large-scale fiber distribution networks, this can simplify route planning and reduce unnecessary cable termination points.
Mid-span branching is an important installation method in modern optical access networks. Consider a feeder cable running along a main telecommunications route. At a particular location, the network operator may need to distribute a portion of the fibers to a local FTTH access area while allowing the remaining fibers to continue to another distribution point.
A fiber optic splice closure with mid-span access can support this architecture by providing a protected location for fiber access and splicing without requiring the entire cable to be fully cut and terminated.
The 144 Core Dome Fiber Optic Splice Closure is designed with a dedicated mid-span dual-hole port, making it suitable for this type of network configuration. Combined with the internal splice tray structure, the enclosure can accommodate fiber branching while maintaining organized cable management.
This is particularly relevant to telecom operators and contractors deploying fiber along roads, utility corridors, residential areas, industrial parks, and other distributed network environments.
Passive optical networks often require optical signal splitting between a feeder network and multiple subscribers. PLC splitters are commonly used for this purpose because they enable passive optical distribution without requiring local electrical power.
The 144 Core Dome Fiber Optic Splice Closure supports installation of 1 × 2:32 PLC splitter or 2 × 2:16 PLC splitters. This capability adds flexibility to network designers who need to integrate optical splitting within a protected outdoor enclosure.
For example, a 1 × 32 PLC splitter can divide one optical input into 32 output paths, while a configuration involving two 1 × 16 splitters can provide a different distribution architecture. The exact configuration should be selected according to the optical budget, subscriber count, network topology, and project requirements.
By supporting PLC splitter installation within the enclosure, the FOSC can function as more than a simple splice protection point. It can become part of the optical distribution architecture, combining fiber splicing, branching, and passive signal distribution within a single protected location.
Angnet Technology also offers PLC splitter products as part of its wider fiber optic component portfolio, allowing system designers to source complementary passive optical components from an established fiber connectivity supplier.
Cable diameter is an important engineering parameter because outdoor fiber cables are available in many structural configurations. A closure must provide adequate cable entry space while maintaining sealing performance.
The ANFC-144CB is designed for cable diameters from 10 mm to 25 mm. This range allows the enclosure to accommodate a variety of outdoor fiber cable constructions used in telecom and access network projects.
During installation, cable selection should always be matched with the specified port configuration and sealing components. Correct cable preparation and appropriate sealing assembly are essential for maintaining the intended environmental protection level.
For system integrators, checking cable diameter before procurement can prevent installation problems and ensure compatibility between the fiber optic splice closure and the selected outdoor cable.
Optical fiber management is not only about protecting the splice itself. Fiber routing inside the enclosure must also respect minimum bending requirements to avoid excessive attenuation or mechanical stress.
The product specification identifies 360-degree access and a fiber bending specification greater than 40 mm. This provides technicians with a structured internal working environment for organizing fiber routing.
Maintaining suitable bend control is especially important in high-density closures. When a large number of fibers are packed into a relatively compact enclosure, poor routing can increase the possibility of accidental bends, crossovers, or mechanical stress during maintenance.
A well-organized fiber splice closure should therefore provide sufficient working space and routing paths for technicians to handle fibers without excessive manipulation.
The dome structure and tray-based design of the ANFC-144CB are intended to support this type of organized fiber management, helping installers maintain a cleaner internal layout.
Material selection has a direct impact on the durability of outdoor telecommunications equipment. The ANFC-144CB uses PC+ABS for its enclosure body.
PC+ABS is a commonly used engineering thermoplastic combination that brings together characteristics associated with polycarbonate and ABS materials. In enclosure applications, the material is used to provide a practical balance between structural strength, impact resistance, dimensional stability, and manufacturability.
For an outdoor fiber optic splice closure, the enclosure material must work together with the sealing system to provide a reliable protective structure. The housing itself is only one part of the overall environmental protection strategy; cable entry seals, mechanical fasteners, internal fiber management, and assembly procedures are equally important.
The black enclosure finish also provides a conventional appearance for outdoor telecom infrastructure and is suitable for pole-mounted, aerial, wall-mounted, and underground deployment scenarios.
Outdoor telecommunications equipment can be exposed to significant temperature variation depending on geographical location and installation environment. Fiber closures installed in direct sunlight, exposed aerial locations, underground chambers, or cold-weather regions can experience substantially different thermal conditions.
The specified working temperature range for the ANFC-144CB is -40°C to 65°C. This broad range makes the closure suitable for many outdoor network environments where temperature variation must be considered during equipment selection.
For project engineers, the operating temperature specification should be evaluated together with other environmental requirements, including solar exposure, humidity, water exposure, installation altitude, and mechanical conditions.
When these factors are considered as part of the overall network design, an appropriately rated outdoor fiber optic splice closure can contribute to stable long-term operation of fiber distribution infrastructure.
Installation flexibility is a practical advantage for telecom contractors because fiber routes do not always follow one standard physical configuration. Depending on the network design, a closure may need to be installed above ground, on a utility pole, on a wall, or below ground.
The ANFC-144CB supports aerial, pole-mounted, wall-mounted, and underground installations. It can also be used in pipeline manholes and hand holes according to the product application information.
For aerial applications, the enclosure can be positioned along overhead fiber routes where protection from weather and mechanical exposure is required. Pole-mounted installation can be useful in distribution networks where fiber routes follow existing utility infrastructure.
Wall-mounted deployment can support telecom buildings, access facilities, and other fixed infrastructure. Underground installation, including manholes and hand holes, provides another option for networks where cables are routed below the surface.
This broad installation compatibility makes the 144 Core Dome Fiber Optic Splice Closure suitable for network projects with different physical deployment architectures.
FTTH networks require a large number of passive optical components to distribute fiber from central infrastructure toward individual buildings and subscribers. As networks expand, fiber branching points must be protected and organized.
A fiber optic splice closure for FTTH can be deployed at strategic locations along feeder and distribution routes. The enclosure can protect spliced fibers while providing a point for branching and, where applicable, PLC splitter integration.
The 144-fiber capacity is useful for higher-density access network segments where multiple fiber routes converge. Its support for mid-span branching also allows network planners to integrate local distribution points without redesigning the entire feeder cable route.
For FTTx projects, the actual closure configuration should be determined based on subscriber density, feeder fiber count, splitter architecture, cable type, and installation environment. Nevertheless, the combination of 144-fiber capacity and flexible cable entry makes this model a practical option for many access network designs.
Fiber optic technology remains essential to modern CATV infrastructure because optical transmission enables high-capacity signal distribution over long distances with low attenuation.
In CATV networks, a fiber optic splice closure can be used at cable branching points, distribution nodes, and other outdoor locations where optical fibers need to be connected or routed.
The ANFC-144CB is also applicable to telecommunications networks. Telecom operators can use dome closures to protect fiber splicing points along feeder routes, access networks, and distribution systems.
The enclosure's 144-fiber capacity can support relatively dense cable networks while maintaining a structured internal tray arrangement. Its IP68 protection further supports outdoor deployment where environmental exposure is an important engineering consideration.
Modern data processing infrastructure depends on reliable optical connectivity between facilities, network nodes, equipment rooms, and communication sites. Although many high-density fiber connections are located indoors, outdoor cable routes still require suitable protection at transition and splicing points.
The ANFC-144CB can be used in data processing network infrastructure where outdoor fiber cables need to be branched or spliced before entering another network segment.
In these applications, the role of the FOSC enclosure is primarily physical and environmental protection. It does not replace active network equipment; instead, it provides a protected passive infrastructure point for optical cable management and fiber splicing.
This distinction is important when planning complete optical networks. Reliable transmission depends not only on switches, transceivers, and optical modules but also on the passive infrastructure that physically connects these components.
Selecting an outdoor closure should begin with the network architecture rather than simply the nominal fiber capacity. Engineers and procurement teams should evaluate several parameters before selecting a specific fiber optic splice closure.
The first consideration is fiber count. If the project requires up to 144 fibers, the ANFC-144CB provides six 24-fiber splice trays and a maximum capacity of 144 fibers.
The second consideration is cable configuration. The project team should verify the number and diameter of incoming and outgoing cables, whether mid-span access is required, and whether drop cables need to be connected.
The third consideration is environmental protection. Outdoor installations should evaluate the required IP rating and sealing design. For demanding environments, IP68 protection provides an important level of environmental resistance.
The fourth consideration is installation location. Aerial, pole-mounted, wall-mounted, and underground installations can have different mechanical and environmental requirements.
The fifth consideration is future expansion. A closure should ideally provide enough capacity for foreseeable network growth while maintaining manageable internal fiber organization.
Finally, the project should consider whether PLC splitter integration is required. The ability to accommodate 1 × 2:32 or 2 × 2:16 PLC splitter configurations can be useful in passive optical network architectures.
Angnet Technology, officially Shenzhen AngNet Technology Limited Company, focuses on one-stop fiber and copper network solutions for global telecom infrastructure. According to the company's published information, Angnet has more than 10 years of experience in fiber optic and copper network cabling and received the honorary title of National High-tech Enterprise from the Shenzhen government in 2018.
The company's product portfolio covers fiber optic cables, fiber optic connectors, MTP/MPO cables, PLC splitters, fiber patch cords, pigtails, and other fiber optic accessories, together with copper network products. This broad product range enables customers to build more complete network infrastructure solutions rather than sourcing every passive component independently.
Angnet Technology's solutions cover telecom and FTTX networks, enterprise structured cabling, hybrid fiber-copper infrastructure, and high-density optical infrastructure for data centers. This product breadth is particularly relevant to projects in which the fiber optic splice closure must work together with optical cables, PLC splitters, connectors, patch cords, and distribution equipment.
For international distributors, telecom contractors, and system integrators, working with a supplier that understands the broader optical infrastructure can simplify product selection and project coordination.
Optical fiber itself is capable of transmitting large volumes of data over long distances, but the physical network surrounding the fiber must be engineered with equal attention to reliability.
A damaged cable entry, inadequate sealing system, poorly managed fiber bend, or improperly protected splice can create a weak point in an otherwise high-performance network.
A properly selected fiber optic splice closure addresses these physical infrastructure requirements by creating a dedicated environment for fiber splicing and cable management. IP68 protection, mechanical sealing, appropriate fiber bending space, and organized splice trays can collectively reduce environmental and installation-related risks.
For high-capacity networks, these details become increasingly important because a single closure may contain dozens or hundreds of fiber connections. The 144 Core Dome Fiber Optic Splice Closure is designed to provide this level of protection and organization in a compact outdoor enclosure.
The main specifications of the ANFC-144CB 144 Core Dome Fiber Optic Splice Closure include:
Product type: Dome-type Fiber Optic Splice Closure (FOSC)
Model: ANFC-144CB
Maximum fiber capacity: 144 fibers
Splice tray configuration: 6 × 24F
Enclosure size: Approximately 480 × 240 mm
Material: PC+ABS
Color: Black
Working temperature: -40°C to 65°C
Protection level: IP68
Cable diameter: 10 mm to 25 mm
Cable entry: 1 mid-span dual-hole port + 4 round-hole ports
Drop cable support: 4 × 4 mm grommets accommodating up to 16 drop cables
PLC splitter support: 1 × 2:32 PLC splitter or 2 × 2:16 PLC splitters
Fiber access: 360-degree access
Fiber bending: Greater than 40 mm
Sealing: Vulcanized rubber sealing components
Sealing structure: Screw-pressure mechanical sealing
Installation: Aerial, pole-mounted, wall-mounted, underground, pipeline manholes, and hand holes
Applications: CATV, telecommunications networks, and data processing networks
These specifications make the ANFC-144CB suitable for network designers who require a combination of high fiber capacity, environmental protection, flexible cable routing, and practical installation.
The development of higher-capacity optical networks has increased the importance of passive infrastructure components. While optical cables and active transmission equipment often receive significant attention during network planning, fiber splicing and cable protection points are equally important to long-term system performance.
The 144 Core Dome Fiber Optic Splice Closure addresses these requirements through a combination of 144-fiber capacity, six 24-fiber splice trays, IP68 environmental protection, mechanical sealing, multiple cable ports, mid-span branching support, and PLC splitter compatibility.
Its flexible installation options also allow the same enclosure platform to be considered for aerial, pole-mounted, wall-mounted, and underground deployments. This makes it adaptable to different telecom and FTTH infrastructure environments.
For distributors, contractors, and network integrators looking for a high-capacity outdoor fiber optic splice closure, the ANFC-144CB provides a practical specification set for modern optical distribution projects.
Angnet Technology's broader portfolio of fiber optic and copper connectivity products further supports complete network infrastructure development. With experience across fiber optic cables, PLC splitters, connectors, patch cords, MTP/MPO assemblies, and related passive components, Angnet Technology is positioned to support customers seeking coordinated fiber connectivity solutions.
For complete product specifications and technical information, visit the 144 Core Dome Fiber Optic Splice Closure product page or contact Angnet Technology for project-specific fiber network requirements.
A 144 Core Dome Fiber Optic Splice Closure is an outdoor FOSC enclosure designed to protect and organize fiber optic cable splicing, branching, and through connections. This model provides a maximum capacity of 144 fibers through six 24-fiber splice trays.
IP68 indicates a high level of protection against dust and water ingress. For outdoor fiber infrastructure, this helps protect internal fiber splices and cable connections from harsh environmental conditions when the closure is correctly installed and sealed.
Yes. The enclosure includes a mid-span dual-hole port and is designed to support mid-span, or uncut cable, branching applications. This allows selected fibers to be accessed while other fibers continue through the main cable route.
Yes. The specified configurations support either one 1 × 2:32 PLC splitter or two 2 × 2:16 PLC splitter configurations, depending on the network architecture and project requirements.
The closure is suitable for aerial, pole-mounted, wall-mounted, and underground installations. It can also be used in pipeline manholes and hand holes according to the product application information.
The specified compatible cable diameter range is 10 mm to 25 mm. Project engineers should verify the actual cable construction and cable entry configuration before installation.
The enclosure body is made from PC+ABS material, providing a practical engineering material solution for the protective housing of the outdoor fiber optic splice closure.
The specified working temperature range is -40°C to 65°C, making the closure suitable for a wide range of outdoor telecommunications environments.
The maximum configuration is six splice trays, with each tray supporting 24 fibers, giving the enclosure a total maximum capacity of 144 fibers.
The product is designed for applications including CATV, telecommunications networks, and data processing networks. It is also suitable for outdoor FTTH and broader FTTx infrastructure where fiber branching and splicing protection are required.
As optical communication networks become larger, denser, and more geographically distributed, reliable protection at fiber splicing and branching points is becoming increasingly important. A high-capacity fiber optic splice closure must provide more than physical enclosure space; it must support organized fiber management, environmental protection, cable routing, and practical field installation.
The 144 Core Dome Fiber Optic Splice Closure – Mechanical Seal, model ANFC-144CB, combines a 144-fiber maximum capacity with six 24-fiber splice trays, IP68 protection, vulcanized rubber sealing components, a screw-pressure mechanical sealing structure, mid-span branching capability, multiple cable entry ports, and PLC splitter support.
For telecom operators, FTTH/FTTx contractors, system integrators, distributors, and network infrastructure planners, these features make the product a versatile option for outdoor fiber distribution and protection.
With its wider portfolio of fiber optic and copper network products, Angnet Technology can also support customers beyond individual closure requirements, providing coordinated connectivity components for telecom, FTTX, enterprise, and data center infrastructure.
As network capacity continues to increase, dependable passive infrastructure will remain fundamental to long-term connectivity. Choosing the right 144 core fiber optic splice closure at the planning stage can help create a more organized, protected, and serviceable optical network for today and future expansion.
