Yealink SIP-T27P Bundle of 4 Executive IP Phone 6 line LCD POE No Power Supply. Yealink SIP-T27P BUNDLE OF 4 Enterprise HD 6 VoIP accounts LCD POE. Delivering a superb sound quality as well as rich visual experience. 3.6 240x120-pixel graphical LCD with backlight. HD voice, HD handset, HD speaker. Power consumption (PoE): 1.60-5.94W.