In most cases, video conferencing is easy and intuitive. It's like having a face-to-face conversation, but without all the hassle and expense of travel. However, it's not just the faces that matter when video conferencing - it's also the voices.
One major issue with video conferencing is sound. The mute button is a powerful tool that should absolutely be employed so that background noise doesn't add up and drown out important words. However, employees and participants must remember that the mute button is not a magical device that allows them to say anything they like. As many politicians and public figures know, sometimes the microphone can still be on, even when you think it's off. Watching what you say and do - mute button or not - is always good etiquette when video conferencing.
It is also important to test the sound quality of the call by saying a few test words and having participants go around and introduce themselves to the group. Not only will this act as an icebreaker, but it will also help to identify and solve any sound issues before the call even begins. This will prevent interruptions later on that could disrupt the flow of the conference.