1) Internet browser:
Open a browser window for the camera configuration built-in web, click on the ‘STEAM’ button. The sound can play in the video.
2) Use the app on the phone:
Open a camera video live streaming. The Mic button is below the video, you can turn it on/off to talk. You can listen to the speaker via a click on the speaker icon.
3) Use M7CMS software on the computer:
You can turn the mic on/off, and speaker on/off via clicking the icons on the right panel where the camera you want to play the sound.