Full duplex speakerphone, 297 x 160 pixels backlit display, and RJ-22 headset compatibility
Audio Controls: Volume (independent control for handset, speakerphone, headset, alert/rings), Mute (LED indicator), Speakerphone (LED indicator), Headset (LED indicator)
IP Telephony: SIP Protocol, VLAN and DiffServ/ToS supported Quality of Service, Powered by 802.3af PoE (standard) or local adapter (optional, not included), 10/100/1000 Ethernet Speed Switch, DHCP and static IP Addressing