The first and by far the one that’s used the vast majority of the time is simply an audio conference call. Secondly, many people are now doing Web conferences, and that means they may be talking on the phone but at the same time they want to be participating and being able to see the host computer. Perhaps they’re going through PowerPoint slides or a demonstration of a computer tool. Lastly, you likely are hearing more and more about video conferencing today. Video conferencing can involve really two different types of conferencing. The simpler and most economical aspect of video conferencing involves simply a webcam that pretty much everyone now has built into their computer, and even their smartphone.
Video conferencing can also mean a dedicated large conference room with the specific high-definition cameras and monitors mounted on the wall. Be clear when you’re talking about having a video conference, which type you mean.