. Yealink HD Voice. 2.3 ” 132x64-pixel graphical LCD with backlight. Dual-port Gigabit Ethernet. PoE support. Opus codec support. Up to 2 SIP accounts. Local 5-way conferencing. Support EHS Wireless Headset. Unified Firmware. Support YDMP/YMCS. Stand with 2 adjustable angles. Wall mountable.