If a shop manager says the internet slows down every afternoon, or the camera app keeps lagging when you check in from your phone, the security system may be part of the story. CCTV looks like a passive setup, but cameras stream video all day and night, and that traffic travels over the same connection your tills, staff computers, and customers depend on.
Why cameras load the upload side
Most of what we do online is download traffic: loading pages, streaming video, pulling down files. Cameras work the other way around. Each one sends its video up to a recorder inside your premises or to a cloud service outside it. Many connections offer far more download capacity than upload, so a camera system can fill the upload side while downloads still look fine on a speed test. That is why a business can be surprised when the cameras make everything else feel sluggish.
How much a camera actually uses
The bandwidth a camera uses depends on its resolution, frame rate, and video codec, and on how much movement it sees. A busy entrance recorded at high resolution and frame rate will use far more than a quiet back store room set to lower settings. Multiply that by the number of cameras and the hours they run, and the total adds up quickly. The practical step is to check the stream settings on each camera, add them up for the whole system, and compare the result against your upload speed at busy times of day, not just first thing in the morning.
Local recording or cloud storage?
There are two common ways to store footage. A network video recorder (NVR) on your premises keeps the footage locally, so the video mostly stays inside the building and only leaves when someone views it remotely. Cloud recording sends the footage offsite continuously. That is convenient, and it protects your footage if someone walks off with the recorder, but it means a steady upload load all day. Many systems also allow a mix, such as recording locally and sending only motion events or snapshots to the cloud. The right choice depends on how many days of footage you need to keep and how you plan to access it.
Keep camera traffic apart from business traffic
Cameras, payment terminals, and staff computers should not all share one flat network. Putting camera traffic on its own network segment, a VLAN or a separate network on the router, stops a busy camera system from competing with card payments and office work. It also limits what can be reached if a camera device is ever compromised. This is the same separation idea behind a good guest WiFi setup, applied here to keep performance steady and footage safe.
A quick planning checklist
- Check the stream settings on every camera and add them up for the full system.
- Decide how many days of footage you need before choosing local, cloud, or mixed storage.
- Run speed tests at busy times of day, since upload speed at 2pm can differ from 7am.
- Give camera traffic its own network segment where your router and switch support it.
- Confirm remote viewing still works while the rest of the office is online and busy.
If you are planning a camera system, or your existing one is making the office connection slow, we can look at the cameras, the connection, and how your business uses both. Call us on 0702 447 334 or send a message through our contact page, and we will help you find a setup that fits your site.