Start with what your team does all day
The right speed depends on how many people are online at the same time and what they are doing. A team that mainly sends message and uses a cloud accounting package needs far less capacity than a sales office with constant VoIP calls, video meetings and file sharing. If ten people are all active during the same hour, you need to plan for that peak, not for the quiet lunch period.
A simple way to start is to list each daily task and give it a rough weight. Web browsing and message use little bandwidth. Video calls, cloud backups and large document uploads use much more. In a small office, it is usually better to size the fibre line for the busiest 3 to 4 hours of the day, because that is when staff feel delays most. If the line is too small, it shows up as slow page loads, choppy calls and files that seem to hang forever.
Match fibre speed to common office patterns
Not every office needs the same package. A five person professional practice in Somerset West may do fine on a modest line, while a 20 person team in Bellville with a cloud phone system and regular Teams calls will need more headroom. The point is not to overbuy, but to avoid a line that is always running near full capacity.
- 1 to 5 staff: good for message, basic cloud apps and light calling, often 20 to 50 Mbps is enough
- 6 to 10 staff: better for mixed use, VoIP and shared cloud files, often 50 to 100 Mbps works well
- 10 to 20 staff: ideal for heavier cloud use, regular calls and meetings, often 100 to 200 Mbps gives more breathing room
- 20 plus staff: look at higher speeds and proper network planning so one activity does not slow the whole office
These are starting points only. If your office does a lot of online backups, CCTV streaming or client meetings with video, add extra capacity. It is also worth checking whether your line is symmetrical, because upload speed matters almost as much as download speed for offices.
Do not ignore upload speed and VoIP quality
Many businesses only ask about download speed, then wonder why calls break up or why sending documents is slow. VoIP and cloud work rely heavily on upload capacity. A call may use very little bandwidth on its own, but several calls at once, plus file sync and cloud access, can place pressure on the line. That is when people hear echo, delay or robotic audio.
If your office uses hosted phones, pay attention to jitter and latency as well as raw speed. Stable service is just as important as a big number on paper. A line with steady performance will usually give a better result than a faster line that swings up and down. In coastal areas like Cape Town and Somerset West, humidity and local infrastructure can also affect cabling and equipment, so the full setup matters not only the fibre handoff.
- Check whether calls will run on the same line as internet browsing
- Ask how much upload capacity is available during peak times
- Plan for meeting apps, screen sharing and file transfers at the same time
- Allow a bit of spare capacity for busy periods and future growth
Plan for power cuts and business continuity
In South Africa, fibre speed is only one part of the picture. During load shedding, the office still needs battery backup for the router, switches and phones if staff are expected to keep working. If the power drops and the network gear shuts down, even a fast line is useless. The same applies to offices that depend on cloud POS systems, remote support or incoming calls from customers.
Think through what must keep running for at least a few hours. A small office might only need internet for calls and message, while a larger team may need the full network, WiFi and a server room. If your site in Paarl or Stellenbosch has older cabling or a lot of office moves, it is worth checking the network layout before increasing speed. Sometimes the slow point is not the fibre at all, it is poor internal cabling or a weak WiFi setup.
Use a local office example to size the line
Take a ten person office in Century City with five staff on VoIP phones, three on cloud accounting and CRM, and two on regular video meetings. They also send scanned documents to clients, receive large attachments and back up data to the cloud each evening. On paper, that may sound modest, but all of it happens at once during the busiest part of the day.
For that kind of office, a line with enough headroom is safer than a tight fit. The team should also have proper WiFi coverage, tidy network cabling and a router that can handle priority traffic for voice. If the office is moving premises, the new address should be assessed before the move so there is no gap in service. A day without phones can be costly and frustrating for both staff and clients.
- Count how many people are active at the same time, not just how many are employed
- List cloud apps, calls, meetings and backups separately
- Check whether the office has guest WiFi or public facing systems
- Build in growth for the next 12 to 18 months
A practical way to decide before you order
The easiest approach is to ask three questions. How many users will be online at peak time? What will they be doing? What level of delay can the business tolerate? If the answer is multiple calls, cloud files and constant client contact, do not choose a line that leaves no room for growth. It is usually better to have a bit of spare capacity than to run the connection at the limit every day.
NewTel works with offices across Cape Town and nationwide from Century City, helping teams line up fibre, VoIP, network cabling and support around the way they actually work. That includes number porting, after-hours support and user training where needed. A careful setup now can save repeat faults, poor call quality and unnecessary upgrades later, which is worth a lot when the office depends on steady communication.
