If others in the voice conference don’t hear you when you speak, It may be that webRTC or Flash has picked the wrong microphone on your computer. You can change this with the following steps:
You see a volume indicator next to the drop down for choosing a microphone. Try selecting a different microphone. When you select the active microphone, you’ll immediately see activity in the volume indicator when you speak.
Close this settings dialog and others in the voice conference should now hear you.
Posted in: Technical