Yealink VC120 video conference system has 18x optical zoom PTZ web camera, microphone arrays with 360 degree voice pickup. This video conference system supports H.264 high profile saving 50% bandwidth, plug and play intelligent firewall transversal, bandwidth dynamic adaptive adjustment, video recording and playback, remote diagnosis, dual displays and ‘focus’ feature, high compatibility and interoperability, 1080p full-HD resolution, supports bandwidth dynamic adaptive adjustment.