Fibre: why upload speed matters for your office

Some Proximus fibre plans are changing from 1 November. What upload speed means for your files and how to assess your office connection.

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AI-generated illustration: office folders exchange data with the cloud through a small business network.

Sending a folder to a client, synchronising the team’s files or joining a video call: your office sends data as well as receiving it. This week’s Belgian telecom news provides a good reason to look at upload speed, which often receives less attention than download speed.

What is changing in November

In its press release of 8 October 2026, Proximus announced symmetrical speeds for certain fibre plans from 1 November. Business Internet Go, Mega and Giga Fiber are among the named plans. Existing eligible customers are due to be migrated gradually and automatically, so the announcement does not confirm that every line has already changed.

This change concerns the plans identified by that operator. It does not establish the specifications of a MYCIO subscription or another provider’s service: those must be checked for your plan and address.

Receiving and sending are different tasks

Download speed concerns incoming data; upload speed concerns the data you send. DIGI’s speed measurement guidance explains the distinction and notes that a test reflects conditions when it is run. “Symmetrical” means the advertised speeds are equal in both directions, without guaranteeing the same result on every device.

Our advice for a small organisation is to start by describing what leaves your office. An agency might send artwork, an association might share event documents, and an independent professional might submit files to partners. Identify the moments when several people have to wait for an upload to finish before continuing their work.

Prepare a record that support can use

Before comparing plans, we recommend a short record: subscription name, site address, equipment used, the task causing difficulty and the time it happens. Also keep the test result, its date and the connection method. These details make discussions more precise than a general impression of slowness.

Proximus’s testing guide highlights the influence of Wi-Fi, the device and other simultaneous usage. For your diagnosis, compare a wired measurement with your usual setup where possible. Ask the person responsible for the network to arrange this check without interrupting important work.

Ask about the impact on working time

We then suggest choosing a practical case: a folder you submit regularly, the morning team call or an upload made during a meeting. Record the inconvenience before an intervention, then repeat the same task afterwards. This gives you a useful outcome to discuss instead of focusing only on the largest number on a product sheet.

For non-urgent uploads, also ask whether a different time would be more suitable. Agree this arrangement with the team: it should not delay a client delivery or complicate working habits without a clear benefit.

Check your situation before deciding

The changes to certain plans this November are an opportunity to review your actual connection. For an SME or association, we recommend bringing together the office’s needs, measurements and constraints before choosing a change.

Would you like to review your connection and network? Explore our internet connectivity solutions and contact MYCIO to check the options available at your address.