Connect your business to fiber

Can I have fiber?

The internet of the future is now!

In order to ensure the best possible performance, now and in the future, we are progressively rolling out fiber in Belgium. We install it right into the heart of your business to offer you:

  • Stable Internet connection, without interruptions
  • Ultra-low latency
  • A picture sharper than ever, on all your screens

Ultra-fast and stable Internet

Users notice the difference

Enjoy amazing speeds of up to 1 Gbps per second in download and up to 150 Mbps in upload.

Fiber 1 Gbps
42 sec

Copper 70 Mbps
10 min

Fiber 1 Gbps
12 sec

Copper 70 Mbps
2 min 56

Fiber 1 Gbps
6 min

Copper 70 Mbps
19 min 30

"I'm a freelance video editor. So I work on very large files that I have to download and upload for my clients. The speed of fiber saves me a lot of time."

Bram, 34, Ostend

“As a trainer, I had to adapt by developing distance learning courses. Having a fast fiber connection without interruption made things easier for me, and therefore contributed to my success.”

Marie, 49, Brussels

Discover Business Flex Fiber

The flexible pack for your business

Fiber is...

  • Unlimited and ultra-fast Internet
  • Stable Internet connection, without interruptions
  • Exclusive customer service with a Business Expert following your question from A to Z
  • As many mobile subscriptions as you want, at an ultra-advantageous price
Free installation

Did you know?

A technician will come and install fiber  in your premises.

Already a Proximus customer? Please note that your current copper cable will have to be replaced by fiber soon anyway in order to meet the ever-increasing need for connectivity and to guarantee you the best performance today and in the future.

How do I get fiber?

Questions that you may still have

Fiber is the technology of the future. The fiber cables transmit data over long distances at the speed of light and thus offer many advantages, including an ultra-fast and much more stable Internet connection than with traditional copper cables.

Proximus is therefore modernising its network by gradually replacing these copper cables by fiber cables. And unlike most other operators who stop at the street, Proximus is installing fiber right into your business, to ensure the best possible performance now and in the future. In the long term, our copper network will be completely replaced by this new technology.

Thanks to fiber, you have a super-fast and stable internet connection, ultra-low latency, a sharper image than ever on all your screens and, above all: you’re ready for the future:

  • Ultra-fast Internet: surf and share your files with colleagues and customers faster than ever before. With fiber, never again is your patience put to the test.
  • Stable and reliable Internet: upload and download large files without interruption even if all your colleagues are connected at the same time.
  • A sharper image than ever on all your screens: whether it's on your TV, tablet or smartphone, with fiber, no detail will escape you.
  • Ready for the future: in the future, more and more devices in your business will be connected to the Internet. With fiber, you will easily cope with this evolution.

Mbps is a measure of the amount of data transferred in one second, and is used worldwide to quantify Internet speeds. Mbps stands for megabit per second. Gbps stands for gigabit (or GIGA) per second. A gigabit (or 1 GIGA) is 1,000 megabits - that’s very fast!

When Proximus indicates a speed, it’s almost always the download speed. If 1 GIGA is specified for a Fiber Internet product, this means that the connection can download up to 1 gigabit of data per second. An example: with a connection of 1 gigabit per second, you can download a video file with a volume of 1.5 gigabit in just 12 seconds, while you would need almost 3 minutes at a traditional speed (70 Mbps).

Fiber not only offers you the fastest and most stable Internet connection on the market, it is also the most environmentally friendly solution. Sending data via fiber generates very little energy. And up to 12 times less than with your current copper cable! So switching to fiber is an optimal decision for the environment and the climate. By phasing out our current copper cables, we are currently recycling 500 tons of copper per year and giving it a second life.

Fiber consists of glass made from silicon dioxide. Silicon disoxide is the second most abundant element on earth, after oxygen. It is found in sand, clay, rocks and even water. Its exploitation does not harm the environment

Compared to copper, the production of fiber does not have a large ecological footprint. According to the industry, the exploitation and production of 2 kg of copper wire (which is used for your current connection) results in the emission of 1,000 kg of CO2, while the emission if fibre is only 0.06 kg. 

The alarm system:
It depends on how it is connected:

  • Is it connected via Wi-Fi? This will not be a problem, but the installer of your alarm will need to reconfigure the terminal.
  • Is it connected on your Internet line, on a mobile network, or on a separate analog line (of your pack) and dedicated to your alarm? In that case, you won't have to do anything.
  • Is it connected on the same line as the one you make calls on (the line of your pack)? In that case we recommend that you opt for a backup battery (for your modem, so the modem will continue to function in case of a power outage). Test the alarm line afterwards.

In addition, if your alarm system is connected to a monitoring station, we advise you to ask your alarm installer to check to make sure the installation works properly

The payment terminal:
Recent payment terminals (Wi-Fi, IP, mobiles) will work on fiber connectivity (after being reconfigured). Only old PSTN terminals need to be examined more closely.

The telephone exchange:
This depends on the current technology of your telephone exchange. In case of:

  • An IP-certified telephone exchange: it will work seamlessly on both copper and fiber IP connectivity. You don't have to do anything.
  • A non-IP-certified telephone exchange (e.g. ISDN): you will have the choice between:
    • keeping your non-IP exchange and getting a box to convert the IP signal into an ISDN signal "Bizz IP Box ISDN" (€6.5/month).
    • migrating your exchange to a new Proximus IP exchange (with a "Bizz IP Box Other Party" box (€6.5/month) if your exchange is not a Proximus exchange).

Let's meet and talk

Fixed internet speed: the actual speed experienced depends on the computer system, but also in exceptional cases, on general use. Your surfing speed may also be slower, while using Wi-Fi. Go to to discover the surfing speed in your home.
The download speed of 1 Gbps can only be obtained with a fixed device directly connected to the modem.

Why choose fiber for your business?

Equip your business with optical fiber and reach speeds of up to 1 Gbps in download and up to 150 Mbps in upload with Business Flex Fiber Premium. Optical fiber is increasingly convincing professionals and companies throughout Belgium. Here are just some of the advantages of optical fiber for your business:

  • Fiber offers a superfast internet connection
  • Fiber offers a stable and reliable internet connection
  • Fiber allows seamless communication by videoconferencing
  • Fiber increases the quality of group activities (e.g. cloud)
  • Fiber also represents a commitment to quality for your company

Where is fiber available?

Fiber is available in several major Belgian cities and is being rolled out in others. It is also being deployed on industrial estates and in industrial buildings, as well as most new housing estates and apartment buildings.

Thanks to our partnerships with Fiberklaar in Flanders and Unifiber in Wallonia, the roll-out of fiber will pick up speed in the coming months and years, in order to offer you the best network available. The aim is to provide an ultra-fast and stable network that can easily absorb the data traffic that will continue to grow in the years to come.

Check if this applies to your city

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