Jul.14,2026
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Large FTTX projects rarely need just one type of fiber optic box. A network may require outdoor distribution boxes for fiber splitting, terminal boxes for subscriber connections, splice closures for cable joints, indoor outlet boxes, and PLC splitter cassettes for passive optical distribution.
When these products are sourced separately or selected without matching the project structure, installers can face incompatible cable ports, insufficient splice capacity, complicated fiber management, and unnecessary delays in the field.
At Alteoptic, we provide a complete range of fiber optic terminal boxes, distribution boxes, splice closures, protection boxes, desktop boxes, and PLC splitter cassette solutions. This helps our customers select products around their actual network topology, fiber count, installation environment, and future expansion needs.
At Alteoptic, our fiber optic box portfolio is designed around the different points where an optical network needs to distribute, terminate, protect, split, or splice fiber. Rather than treating all fiber optic boxes as the same product, we divide our solutions by installation environment and network function.
| Product Category | Main Function | Typical Application |
|---|---|---|
| Outdoor FTTX distribution boxes | Fiber splitting, adapter installation, cable routing, and terminal connection | Outdoor FTTX networks, wall-mounted distribution points, feeder and drop cable connections |
| IP65 outdoor terminal boxes | Protected outdoor termination and multi-port cable access | Outdoor access networks, pole or wall installations, subscriber distribution |
| Dome-type fiber optic joint closures | Protects cable splicing points in a vertical enclosure | Aerial, underground, duct, and outdoor cable splicing |
| Horizontal fiber optic joint closures | Supports cable splicing in a flat or horizontal enclosure format | Backbone, distribution, and branch cable joints |
| High-capacity splice closures | Organizes large quantities of spliced fibers | Backbone networks, large FTTX projects, and expansion points |
| Fiber optic desktop boxes | Provides compact indoor fiber termination | FTTH subscriber connections, apartments, offices, and telecom rooms |
| Fiber optic protection boxes | Protects fiber splice or drop cable connection points | Indoor drops and compact connection points |
| PLC splitter cassettes | Supports passive optical signal distribution | PON networks, fiber distribution frames, and FTTX splitting points |
This range allows us to support customers from the central distribution stage to the final user-side connection.
Outdoor FTTX distribution boxes are one of the most important products in access network deployment. They provide a protected location for fiber termination, adapter installation, PLC splitter integration, cable entry, cable exit, and fiber routing.
Our catalog includes outdoor box options for 4, 6, 8, 12, 16, 24, 32, 48, 64, and 72-core applications. This allows customers to select a structure that fits their current subscriber count while considering later expansion.
Smaller outdoor boxes are suitable for branch points, building access, and localized subscriber distribution. Depending on the selected design, they can support SC simplex adapters, LC duplex adapters, and PLC splitter configurations.
For example, a 4-core or 8-core box can be suitable where space is limited and only a small number of drops need to be managed. A 16-core or 24-core solution is often more suitable for a building, street cabinet area, or larger distribution point.
For higher-density projects, Alteoptic also provides larger FTTX distribution boxes designed for 32, 48, 64, and 72-core networks. These structures can accommodate more adapters, splitter modules, splice trays, and cable routing positions.
Some catalog configurations support combinations such as multiple 1x8 PLC splitters or 1x16 PLC splitters, together with SC simplex adapter positions. This gives project designers more flexibility when planning PON distribution.
| Network Requirement | Suitable Box Direction |
|---|---|
| Small outdoor branch point | 4 to 8-core compact FTTX box |
| Building or local access distribution | 12 to 24-core outdoor distribution box |
| Higher subscriber density | 32 to 48-core distribution box |
| Large distribution and splitter integration | 64 to 72-core high-capacity FTTX box |
| Rugged multi-port outdoor termination | IP65 terminal box with matched inlet and outlet structure |
Many of our outdoor FTTX box series use ABS, PP/ABS, or PP+GF materials according to the product design. The catalog also includes IP55 and IP65 options for different outdoor protection requirements.
Fiber optic joint closures protect the splice points where optical cables are connected, branched, repaired, or extended. The right closure depends on cable direction, splice capacity, installation space, port configuration, and future network expansion.
Dome-type closures use a vertical structure and are commonly selected for outdoor splicing applications. Our catalog includes dome closures from compact 12-core and 24-core options through 48-core, 96-core, 144-core, and 288-core configurations.
Depending on the model, customers can select mechanical sealing or heat-shrinkable sealing structures, different inlet and outlet combinations, and splice tray quantities that fit the fiber count.
Dome closures are a practical choice when the installation requires a vertical enclosure and organized splice tray stacking.
Horizontal splice closures use a flat structure and are often selected for feeder, distribution, branch, or backbone cable splicing. They can be convenient where cable routing follows a horizontal direction or where an installer needs a wider internal working area.
Our horizontal closure range includes capacities from 12 cores to 576 cores, with different port designs, tray configurations, and enclosure materials. This allows customers to select compact closures for localized splicing or high-capacity structures for larger cable networks.
For large FTTX and backbone projects, closure capacity matters. A higher-capacity closure can help project teams organize more splices at key distribution points and reserve room for later network growth.
| Closure Type | Typical Capacity Range | Best-Fit Scenario |
|---|---|---|
| Compact dome closure | 12 to 48 cores | Small branch joints and localized outdoor splicing |
| Medium dome closure | 48 to 96 cores | Distribution cable splicing and network expansion |
| High-capacity dome closure | 144 to 288 cores | Larger outdoor splicing points and high-fiber-count projects |
| Horizontal closure | 12 to 576 cores | Feeder, branch, backbone, and large-scale cable networks |
Outdoor equipment is only one part of an FTTX project. Once the network reaches a building or subscriber area, compact indoor products help create clean, manageable, and accessible fiber connections.
Our desktop box series includes compact 1-core, 2-core, 4-core, and 8-core options. Depending on the design, these boxes can support SC, LC, or FC adapter types and different pigtail cable diameters, such as 0.9mm, 2.0mm, and 3.0mm.
They are suitable for FTTH subscriber connections, office environments, apartments, telecom rooms, and other indoor locations where the fiber needs to be protected and neatly terminated.
Fiber protection boxes are designed for simple drop cable connection and splice protection. Their compact structure makes them useful where a full distribution box is unnecessary but the fiber still needs physical protection and organized routing.
PLC splitter cassettes support passive optical distribution in PON networks. Our catalog includes cassette options such as:
These products help network builders distribute one optical signal to multiple downstream connections while keeping the splitter module protected and organized.
A fiber optic box is not only an enclosure. Its practical value comes from how well the material, sealing structure, cable ports, splice trays, adapter positions, and fiber-routing area work together. At Alteoptic, we focus on the product details that affect installation efficiency and long-term network maintenance.
Different products in our catalog use ABS, PP, PC, PP/ABS, PP+GF, or similar matched enclosure materials according to the required design. The selected material needs to suit the intended installation environment, product structure, and protection requirement.
For outdoor products, we pay close attention to enclosure fit, cover structure, cable-entry layout, and protection design. For indoor products, we focus more on compact size, clean routing, adapter compatibility, and easy access for installers.
Outdoor distribution boxes and joint closures need a cable-entry structure that fits the network layout. Depending on the selected model, customers can choose different inlet and outlet quantities for feeder cables, branch cables, and drop cables.
For joint closures, the sealing structure can be mechanical or heat-shrinkable, based on the product design and project requirement. A well-matched sealing approach helps support stable cable protection in outdoor deployment.
Inside the box or closure, installers need enough space to route fibers clearly and protect splice points. We therefore match products with suitable splice trays, adapter positions, splitter spaces, and cable-management structures.
Our production and inspection attention includes:
| Production Focus | Why It Matters |
|---|---|
| Enclosure appearance and fit | Supports reliable opening, closing, and installation |
| Cover and sealing structure | Helps match the intended IP55 or IP65 product design |
| Cable ports and entry direction | Helps customers organize feeder, branch, and drop cables |
| Splice tray quantity and layout | Matches the required fiber capacity |
| Adapter and PLC splitter positions | Supports practical terminal and splitting configurations |
| Internal routing space | Helps installers protect bend-sensitive fibers |
| Final packing check | Helps products arrive ready for project installation |
For large projects, customers need more than a single product. They need a supplier that can help them match the product structure to the network design.
At Alteoptic, we work with customers to review their required fiber count, installation environment, cable entry direction, adapter type, splitter configuration, splice capacity, material preference, protection level, and packing requirements.
This approach is useful for distributors, contractors, telecom integrators, and project buyers who need to prepare complete solution packages for tenders and large deployments.
Instead of presenting only one box type, customers can combine:
A coordinated portfolio helps customers prepare stronger product selections for larger projects, reduce sourcing complexity, and offer their own clients a more complete fiber network solution.
Alteoptic has worked in the fiber optic industry for more than 10 years. Our annual export value reaches approximately USD 20 million, and our fiber optic boxes and closures are supplied to customers in the United States, Spain, Peru, Argentina, Chile, and other international markets.
Alteoptic supports large-scale FTTX projects with fiber optic box solutions that cover outdoor distribution, terminal connection, indoor FTTH access, PLC splitting, and cable splicing. With capacities from compact indoor boxes to 576-core horizontal closures, plus approximately USD 20 million in annual exports, we help global customers select practical products for complete and scalable optical networks.
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