6 line SIP phone, SIP IP phones offer streamlined functions and the high definition voice quality that's essential for effective communication ( Without AC adapter), 2.3 inch Backlight LCD Display, 5.1 inch Self Labelling Backlight LCD Display, - 2 x 12 Self Labelling, Programmable Buttons, 2 Giga Ethernet Ports (10/100/1000M), PoE, Full Duplex Speakerphone, EHS (Electronic Hook Switch) (WHITE)