The design of the professional D745 desk phone is both aesthetically pleasing and highly practical 12 SIP identities, 4x context sensitive keys, 8x self-labelling programmable LED keys 2x Gigabit LAN ports, 1x USB 2.0 port PoE support (Power over Ethernet, IEEE 802.3af, class 3) internal phone book for up to 1000 entries, Supports EHS (Electronic Hook Switch, optional accessories required)