Audio conferencing has always been the method for group communication, especially for remote users. Today, video is more affordable and offers an additional return on investment when addressing remote communication needs. The ability to visually describe something, or determine moods and gestures, greatly increases the effectiveness of remote communication. This feature is available after activating the appropriate feature key, in addition to purchasing the Audio Conferencing license. On the QX50, two user licenses can be purchased for a total of 8 video conference participants in all active conferences. The maximum total number of video and audio participants in all active conferences is 16.