This amazing conferencer is loaded with advanced technology, yet is very simple to set up and operate. It uses beam-forming technology to eliminate extraneous noise and reverberation and ensure that the best possible signal is being sent to the far end. This Quattro comes with USB connectivity for Internet phones, VoIP networks, and desktop videoconferencing, plus a Video Interface Module for hooking it up to a Video Codec for playing audio and video files. As an added feature, the Quattro can bridge a USB call and the video conference call together if both are in session. Great for bringing in someone who does not have video access at there location.