If you suspect your internet connection is affecting call quality, you can quickly confirm by switching your computer to a different network and testing again. The easiest way is to use your mobile phone as a personal hotspot so your computer connects through 4G or 5G instead of your usual WiFi.

Changing networks helps you check if issues are caused by your current WiFi or office network. If calls work better on cellular data, the problem is likely with the original network.

Set up a personal hotspot on your phone

In these two articles from Apple and Android you can see how to share your cellular data and make your phone visible as a WiFi network:

Use Aircall while on the hotspot

Once connected, use Aircall as normal: make and receive calls, then note any changes in audio quality, delays, or dropped calls. This helps confirm whether your usual network is the source of the issue.

Note: This method is also useful when you need to work on the go and do not have reliable WiFi.