. Yealink HD Voice. 2.4 ” 320 x 240-pixel color display with backlight. Dual-port Gigabit Ethernet. PoE support. Opus codec support. Up to 4 SIP accounts. Local 5-way conferencing. Support EHS Wireless Headset. Unified Firmware. Support YDMP/YMCS. Stand with 2 adjustable angles. Wall mountable