The Snom D717 IP deskphone is a cost-effective entry-level device into the world of professional VoIP telephony. A built-in brightness sensor adjusts the display to the current lighting conditions in the room. 3 x self-labelling function keys, 6 x SIP identities / accounts, 2 x Gigabit LAN port, 1 x USB 2.0 port, Supports PoE (Power over Ethernet IEEE 802.3af, Class 2) and EHS (Electronic Hook Switch, requires optional accessories).