Aastra Dialog 4422 IP Office Telephone
Features a two- row graphical display 13 keys with LEDs Call list (local) Monitor speaker 2-port Ethernet switch (to share a LAN cable/port with a PC) Headset port (with dedicated headset switching key) Power over LAN support (according to IEEE 802.3af) User mobility (log-on and call) User settings via web browser Multi-codec support Multi-language support QoS support (incl.QoS statistics available via WEB browser) Branch office survivability support – i.e. automatic backup gatekeeper registration/deregistration Hearing-impaired support with amplification ( 6dB) Acoustic shock protection Proprietary IP Warning The Aastra 4422 IP Office is a Proprietary IP telephone which requires a Proprietary VoIP telephone system to operate. This phone is not suitable for home use. Power SupplyThis is a Power Over Ethernet (PoE) enabled device and, as such, is sold without a PSU. If you do not have PoE, you will need to purchase a separate Power Supply Unit.