The Yealink T21 E2 sets a replacement normal within the entry-level IP phone market. By creating use of top quality materials and giving options like a large 132×64 pixel LCD backlight display, dual 10/100Mbps LAN ports and up to two SIP accounts the Yealink T21 E2 is the ideal, price effective, IP phone for any workplace setting. In addition, the Yealink T21 E2 includes a power supply for independent operation.