Se ti stai avvicinando per la prima volta al mondo della fibra ottica, tutti i termini tecnici e le abbreviazioni possono sembrare un po’ opprimenti. Ecco perché ho creato questa serie di glossari sulla fibra ottica: per aiutarti a capire cosa significano davvero questi termini, nel modo più semplice possibile.

Ti spiegherò tutto dal punto di vista di un addetto ai lavori, utilizzando foto reali ogni volta che sarà possibile (non solo rendering elaborati). Eviterò inoltre spiegazioni eccessivamente complesse, mantenendo un linguaggio chiaro e diretto, così potrai essere certo di aver compreso il vero significato di questi termini dopo la lettura.

Termini correlati relativi alla fibra ottica

Ecco alcune altre voci del glossario sulla fibra ottica che potrebbero esserti utili. Clicca per saperne di più:

Oggi parleremo di: FTTB.

INDICE

So What Is FTTB？

Let’s start with the basics:

FTTB stands for Fiber to the Building — or sometimes, Fiber to the Basement. It means the fiber optic cable runs all the way from your service provider to the building, but not into each individual apartment or office.

Instead, the fiber usually stops at a central point like the building’s equipment room, basement, oppure communication cabinet. From there, existing copper (or Ethernet) cables are used to bring the internet into each unit.

So, you’re not getting full fiber inside your home — but you’re still much closer than with older setups like DSL or cable.

What Does FTTB Look Like in Real Life?

Here’s a quick example:

  • You live in a multi-story apartment building.

  • The telecom company installs fiber to the basement or utility room.

  • A shared device (often called an ONU oppure network switch) converts the fiber signal.

  • That signal travels through existing LAN cables, phone wires, oppure coaxial lines to each room.

It’s like bringing fiber to your doorstep — but the last few meters are handled by simpler, older wiring.

FTTB vs FTTH: What’s the Difference?

Caratteristica FTTB (Fibra ottica fino all'edificio) FTTH (Fibra ottica fino a casa)
Fiber Reach
Up to the building
All the way into each home
Last Connection
Copper / Ethernet / coax
Full fiber connection
Speed Potential
Good, but limited by last cable
Maximum speed and stability
Costo di installazione
Inferiore
Più alto

FTTB is a great balance — especially for retrofitting older buildings where re-cabling every unit would be costly or disruptive.

How Does FTTB Work Technically?

Here’s the simplified process:

  1. Fiber is deployed to a shared building location (usually a telecom room oppure MDF).

  2. The signal is handed over to devices like:

  3. The signal is then distributed through existing infrastructure to each user.

Is FTTB Fast Enough?

Yes — in most cases.

FTTB can support hundreds of Mbps, or even velocità gigabit, especially if the internal wiring is high-quality Ethernet (like Cat5e or Cat6). However, the overall speed is still limited by the “last leg” — the part between the building entry point and your room.

If your building has old phone lines, performance may be reduced compared to full FTTH.

Why is FTTB Used?

FTTB is a popular solution for:

  • Apartment buildings, condos, or dormitories

  • Commercial office towers

  • Places where rewiring every unit with fiber is difficult or too expensive

It’s a cost-effective way to offer high-speed internet access while reusing existing in-building infrastructure.

In sintesi

FTTB = Fiber to the Building — not quite full fiber to your room, but a huge step up from traditional networks.

It delivers faster speeds, better stability, and is especially useful in large buildings where individual fiber installations aren’t practical.

If someone asks, “Does FTTB mean fiber to the basement?” — the answer is yes, that’s often exactly where it ends.

Hai ancora domande?

Se hai ancora qualche dubbio, non esitare a contattarci.

Vuoi scoprire altri termini relativi alla fibra ottica? Dai un’occhiata alla sezione del nostro blog.

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Infine, se siete un operatore di telecomunicazioni, un gestore di rete o siete attivi nello sviluppo di infrastrutture in fibra ottica e cercate un partner affidabile nel settore dei componenti in fibra ottica, non esitate a contattarci.