mitel ip 480g gigabit telephone (10577) - newest version shoretel 480g

Feature Keys: Transfer, Conference (6 party), Hold, History/Redial (filterable, unlimited; stored on server), Voicemail, Directory (filterable, searchable, unlimited; stored on system) 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 Diff Serv/To S supported Quality of Service, Powered by 802.3af Po E (standard) or local adapter (optional, not included), 10/100/1000 Ethernet Speed Switch, DHCP and static IP Addressing