Using the audio control
You can use the audio control to mute and unmute audio during a meeting. You can also use the control to switch between your phone's speaker and either a Bluetooth-connected device or another audio device. The audio control appears on all meeting pages except the meeting chat page. Choosing the audio control opens a menu, where you can take any of the following actions:
Disconnect (mute) your audio. When you choose this action, a message appears that asks you to confirm your choice. Choose Turn off to confirm.
Listen through your phone's handset.
Listen through your phone's speaker.