20 SIP Lines Gooseneck microphone Full duplex call HD Video Call 10-party audio conference, 3-party video conference Handset / Hands-free / Headset mode 7-inch (1024x600) color touch screen 116 Intelligent DSS Keys(Programmable) Desktop and wall-mounted installation supported Dual Gigabit ports, PoE power supply supported 2.4G/5G dual band Wi-Fi