- Ensure your network ports aren’t being blocked by Firewall / router / antivirus software. (Refer: Firewall and port settings)
- Confirm the hardware is correctly attached and ensure the correct microphone and speakers are selected in software settings.
- Check to ensure the microphone is not muted (some have a hardware mute button) and the speaker volume is turned up.
- If you are using a bluetooth headset, use a USB dongle instead of relying on the computer’s native bluetooth. Retry with a USB headset or a 3.5mm headset and compare the call quality. Since each device behaves differently with each browser, it can be more than a little trouble to tackle such hardware related issues.
For more information about improving call quality, please refer to this article.