The D345 and its elegant, timeless design is a high-quality business phone that supports 12 identities high-resolution display, 4x context sensitive keys, 12x self-labelling LED keys contactless sensor hook switch, 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) erforderlich)