What's packet loss, and why do I see this — my connection is great!

Packet loss is different from speed tests

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If your call participants are seeing packet loss, during a call, recommend that they try:

What is packet loss?

Video calls need a good connection. Because a video call streams live media, having a fast internet connection is not enough.

Traditional speed tests look only at TCP data, which are used for downloads. For example, a speed test might give you a good sense how quickly you can download a file off of a website.

In contrast, video calls use UPD live media streaming. Data is not buffered.

Here's an example. When you're watching Netflix, you are not streaming live media. Your device is buffering the content you're downloading. This can't be done during a video call because the data you're streaming is live.

It's not unusual for a user to have a great network, but experience packet loss on a call. Network congestion, firewall barriers, and/or old or affected hardware (like a router that needs rebooting) can play a role.

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