What Is Access Terminal Box (ATB)?

An Access Terminal Box (ATB), also known as a fiber access socket or fiber pizza box, is an indoor optical connection device used to link fiber drop cables with the optical distribution network (ODN).
It integrates a splice tray, pre-terminated drop cables (1, 2, 4, or 8 fibers), fiber patch cords, and shutter-type adapters in one compact enclosure.

ATBs are widely applied in FTTH (Fiber-to-the-Home) and FTTB (Fiber-to-the-Building) projects to provide a fast, reliable, and safe connection between network operators and end-users.

Why Use an Access Terminal Box (ATB)?

An ATB simplifies and accelerates fiber deployment by offering:

• Quick indoor connections (1–8 fibers) via pre-terminated cables.

• Cost savings through reduced splicing and installation time.

• Improved reliability thanks to factory-assembled termination and dust-proof shutter adapters.

By choosing an ATB, network operators and ISPs can reduce deployment time and budget costs, while ensuring stable and safe fiber connectivity for customers.

Key Features of Fiber Access Terminal Box

• ✔ Compact & aesthetic design – fits easily in indoor environments.
• ✔ Cost-effective – reduces labor and installation expenses.
• ✔ Pre-terminated solutions – plug-and-play ready.
• ✔ Shutter-type adapters – dust-free and eye-safe.
• ✔ Color-coded cable routes – easy maintenance and identification.
• ✔ Laser safety protection – ensures safe handling.

Types of Access Terminal Box (ATB)

ATBs are categorized by the number of fiber connections:

1. Single fiber ATB
   • SC/LC simplex connector (APC or UPC polishing).
   • Pre-terminated with external distribution patch cord.
2. Dual fiber ATB
   • SC/LC simplex or duplex connectors.
   • Supports two end-user devices.
3. Four-fiber ATB
   • SC/LC simplex or duplex connectors.
   • Suitable for small offices or apartments.
4. Eight-fiber ATB
   • Multiple SC/LC connectors.
   • Ideal for multi-dwelling units or business installations.

Why is ATB Also Called a “Fiber Pizza Box”?

The nickname “fiber pizza box” comes from its pizza-like enclosure design.

• The pre-terminated drop cable is coiled inside, allowing smooth cable pulling during installation.
• Suitable for vertical pipes, floors, and indoor wall mounting.
• Offers a cost-effective FTTH solution for the “last mile” of optical distribution networks.

FAQs about Fiber Access Terminal Box (ATB)

Q1: What is the main function of an ATB?
A: To connect fiber drop cables with indoor optical devices securely and quickly.

Q2: How many fibers can an ATB support?
A: 1, 2, 4, or 8 fibers depending on the model.

Q3: Do all ATBs include shutter adapters?
A: Yes, to ensure dust protection and laser safety.

Q4: Which fiber types are used in ATBs?
A: G657A1, G657A2, and G657B3 standards.

Q5: What connector types are supported?
A: SC and LC, simplex or duplex, APC or UPC.

Q6: Is a fiber pizza box the same as an ATB?
A: Yes, it’s a second name based on its design.

Q7: Does Jera Line manufacture ATBs?
A: Yes, Jera Line is a direct factory producing ATBs with pre-terminated drop cables, ensuring quality control, fast delivery, and competitive pricing.

Why Choose Jera Line Access Terminal Boxes?

• Direct Manufacturer – no middlemen, competitive prices.

• Customizable solutions – available with SC/LC connectors, APC/UPC polishing, and different fiber counts.

•  Pre-terminated options – ready-to-install, saving project time.

• Proven in global FTTH deployments – trusted by ISPs and telecom operators worldwide.

• Tested for reliability – each product undergoes mechanical and optical testing.

Summary

The Access Terminal Box (ATB) is a compact, cost-effective, and safe solution for connecting fiber networks to end-users.
As a direct manufacturer, Jera Line provides customized ATB solutions for telecom operators, ISPs, and FTTH contractors.

  Contact us today to get technical support, product catalogs, or a quotation for your fiber deployment project.