How to reduce echo on MS team while on team, I can't do the setting at three dots on top screen.

Use only the Teams Room’s microphone and speakers, and turn off audio on every laptop, tablet, or phone that joined the meeting from the same classroom.

Stop the echo immediately

1. On each personal device in the room, select Mic → Mute, then turn its speaker off or choose Audio off.
2. Leave the Teams Room microphone and speakers active.
3. If someone must rejoin from a laptop:
   • On the pre-join screen, select Room audio to use the classroom system; or
   • Select Don’t use audio/Join without audio if the Teams Room is already connected.

Microsoft specifically warns that keeping personal-device audio active while accepting the call on a Teams Room can cause echo.^1^

The missing Device settings option is not something that must be corrected from the meeting’s three-dot menu. Teams Rooms use their room console and administrator controls rather than the standard desktop meeting settings. The room console still provides microphone, camera, volume, and other meeting controls.^2^

If echo remains with only the room audio active

Ask the school’s IT or classroom-device administrator to identify whether the room runs Teams Rooms on Windows or Teams Rooms on Android.

Teams Rooms on Windows

A documented cause of echo sent to remote participants is the Windows audio-enhancement setting on an attached Teams-certified USB audio device. An administrator should:

1. On the room console, select Settings → Windows Settings.
2. Sign in as an administrator.
3. Open Control Panel → Hardware and Sound → Sound.
4. On the Playback tab, select the room audio device and choose Properties.
5. Open Advanced.
6. Under Signal Enhancements, clear Enable audio enhancements, then select OK.
7. Repeat the same change for that device on the Recording tab.
8. Close Control Panel and restart the Teams Room.

This is Microsoft’s published workaround for Teams Rooms on Windows devices producing echo or poor USB audio.^3^

If the room uses a certified digital signal processor (DSP), Teams Rooms automatically relies on that DSP for acoustic echo cancellation. The administrator should therefore check the DSP and microphone manufacturer’s configuration rather than trying to enable a desktop Teams noise-suppression option.^4^

Teams Rooms on Android

Noise suppression and other audio processing are controlled by the device manufacturer and its firmware; the Teams Rooms Android app does not provide Teams-client-based noise suppression. The administrator should check the OEM management interface, firmware, microphone placement, and manufacturer support guidance.^4^

If multiple room systems join together

If the classroom intentionally uses multiple Teams Rooms devices or a Teams Room with a Surface Hub, the administrator should configure Coordinated meeting join so only the designated device supplies audio. This feature coordinates audio and video to prevent echo and is supported only on Teams Rooms on Windows.^5^

References

1. Microsoft Teams Rooms (Windows) | Microsoft Support
2. Microsoft Teams Rooms (Android) | Microsoft Support
3. Teams Device Known Issues
4. Microsoft Teams Rooms Maintenance and Operations
5. Meeting room guidance for Teams