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 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