Test your speaker and microphone to make sure that you can hear everyone, and everyone can hear you, when using your computer for audio.
To test while joining the meeting on WBS40.8 and later sites, click Settings in the lower-right corner of the preview window, and skip to Step 3.
To test during the meeting, go to More options , and select Speaker, microphone, and camera.
In the Speaker menu, click Test.
If you don't hear anything, try changing the speaker device in the drop-down list, or adjusting the Output volume slider.
In the Microphone menu, click Test, and then speak into your microphone.
After a moment, a recording of your test will automatically play back to you.
If you don't hear the audio play back, try selecting a different microphone from the drop-down list, or adjusting the Input volume slider.