Infrastructure
How Much Internet Bandwidth Does an Office Need?
Size business internet to your busiest hour, not your headcount. Here is how calls and video add up, why upload is the usual limit, and how to check a plan.
The short answer: size your internet connection to what your office does at its busiest hour, not to the number of people on the payroll. Count how many people are on live calls and video meetings at the same time, give upload speed as much weight as download, check the typical speeds your provider discloses rather than the "up to" number in the ad, and leave headroom for backups, updates, and growth. A plan that looks generous on paper can still produce choppy calls if its upload side is small or the office is already running it near capacity.
Start With Your Busiest Hour
Bandwidth problems rarely show up at 7 a.m. They show up at 10 a.m. on a Tuesday, when several people are in video meetings, someone is sharing a screen with a client, the phones are busy, and a laptop decides to download a large update. The question is not "how fast is our internet?" but "what is everything using at the same moment?"
Make a quick list for that peak hour: how many people are on phone calls, how many are on video meetings, whether anyone regularly uploads large files such as drawings, video, or scanned records, and whether cloud backups or file sync run during business hours.
What Calls and Meetings Actually Use
Microsoft publishes bandwidth figures for each Teams endpoint in its network preparation guide. Its recommended rates, listed as upload/download per endpoint, are:
- Teams audio call or meeting
- 58/58 kbps
- Teams one-to-one video
- 1,500/1,500 kbps
- Teams video meeting
- 2,500/4,000 kbps
- Teams screen sharing in a meeting
- 2,500/2,500 kbps
Microsoft notes these are per endpoint, so a person joined from both a laptop and a phone counts twice, and that Teams uses more bandwidth when more is available to improve quality. When bandwidth runs short, Teams protects audio first and lowers video quality. Zoom publishes comparable figures in its system requirements, listing 2.6 Mbps up and 1.8 Mbps down for 720p HD group video.
To turn that into a planning number, multiply the per-endpoint rate by how many people are likely to be on that kind of call at once. For example, ten people in Teams video meetings at the same time at Microsoft's recommended rate works out to about 25 Mbps of upload and 40 Mbps of download, before email, web browsing, file sync, or anything else is counted. Microsoft also offers a Network Planner in the Teams admin center that runs this calculation for each location once you enter your network details and Teams usage.
Audio alone is light. Video and screen sharing are what fill a connection.
Upload Is Usually the Constraint
Most people shop for internet by download speed. But video meetings, cloud backups, file sync to Microsoft 365 or another cloud service, and sending large files all push data out of the office, and every person on a video call is sending as well as receiving.
Many business plans, especially cable plans, are asymmetric, with upload speeds well below download speeds. An office can have plenty of download capacity and still run out of upload during a busy meeting hour. When you compare plans, compare the upload number first.
Read the Broadband Label, Not the Ad
Federal rules require internet providers to display a standardized broadband label for each plan they sell on a standardized, off-the-shelf basis, showing the plan's monthly price along with its typical download speed, typical upload speed, and latency, as set out in 47 CFR 8.1. When the FCC revised the label rules in an order published August 13, 2026, it declined to exempt mass-market plans marketed to business customers, so a standard small business plan should come with one. Service customized for you through an individually negotiated agreement is excluded, so for a circuit bought under a custom contract, the contract and its service level agreement are where speed and performance commitments live.
The typical speed and latency on the label are a better planning number than the headline "up to" speed, because they describe what the provider says customers usually get.
Bandwidth Will Not Fix Everything
A bigger plan does not solve every quality problem. Microsoft's same guide points to several other common causes:
- Wi-Fi that was never planned for real-time voice and video; Microsoft recommends planning the 5 GHz band and access point placement with calls in mind.
- Remote workers whose Teams traffic is forced through the office VPN, which Microsoft recommends avoiding with split tunneling.
- No Quality of Service (QoS) policy, so voice packets wait in line behind a large download.
Latency, jitter, and packet loss matter as much as raw speed for calls. We covered those measurements, along with failover and SD-WAN, in our guide to removing the single point of failure in your internet connection.
A Sizing Checklist
- Count the peak number of people on calls, video meetings, and screen shares at the same time.
- Multiply by the published per-endpoint rates for the tools you use, for upload and download separately.
- Add the regular heavy uploads: backups, file sync, large attachments, and any cameras recording to the cloud.
- Compare that total against the typical speeds on your provider's broadband label or in your contract, not the advertised maximum.
- Check actual utilization during your busiest hour; a circuit that regularly runs near its limit needs more headroom or better traffic prioritization.
- Confirm QoS is configured for voice, and that Wi-Fi was designed for calls and not just for coverage.
Where Cyber One Solutions Fits
Our managed internet services include sourcing circuits matched to each site, and we continuously measure throughput, latency, jitter, packet loss, and utilization trends on managed circuits, so a connection approaching capacity shows up in the data before it shows up as frozen meetings. For phone systems, our managed VoIP work includes a network readiness assessment before cutover and QoS policies that prioritize voice traffic. If you are comparing providers, our Networking Buyers Guide lists the questions worth asking before you sign.
If your calls and meetings struggle at the busiest part of the day and you are not sure whether the fix is a bigger circuit, a different circuit, or a configuration change, contact us and we will look at what your office actually uses.
Frequently Asked Questions
Is a faster plan always the fix for choppy calls?
No. Choppy audio can come from jitter, packet loss, crowded Wi-Fi, VPN routing, or a missing QoS policy rather than a lack of raw speed. Measure utilization at the busiest hour before paying for a bigger plan.
How much bandwidth does one VoIP phone call need?
Far less than video. Microsoft's recommended rate for a Teams audio call is 58 kbps each way, and other VoIP platforms publish their own figures. Once that small amount is available, call quality depends mostly on steady latency and low jitter and packet loss.
Do business internet plans come with the FCC broadband label?
Standardized, off-the-shelf plans do, including mass-market plans marketed to businesses. Service customized through an individually negotiated agreement is excluded, so check the contract and service level agreement for those.