A20W/A20WAC designed by "visual operation, Simple button, rich features, HD voice, exquisite details, innovative appearance", is a high-end 6 SIP account entry-level business phone specifically for office staffs. It incorporates full view black&white graphic lattice screen, support Wi-Fi access and dual-port Ethernet. Its "3W high-power loudspeaker hands-free, 5- party conference, higher level of ZRTP encryption and innovative appearance" are highlight advantages in Entry-level IP Phone. A20WAC supports 802.11AC protocol, 2.4G+5G dual band,integrate two 5DB high gain antennas. A20W supports 802.11G protocol 2.4G band, built-in 5DB high gain antenna.