- VoIP NEC I-SIP Multi-Line Telephone for SL2100 - Supports Ethernet Gigabit Speed (Full Duplex) - 8 Programmable Keys Visible at a Time (May Scroll Up to 32) - Programmable Button Labels - Powered via POE - Full Duplex Speakerphone - Extended-size Message Wait and Call Indicator LED with up to 7 different colors - 3.5 Inch Color Display - Self-labeling Programmable Function - 5 Position adjustable leg assembly - Multi Key to scroll through (4) 8-button screen pages - Soft keys - Red Color LED - Menu button for local Setting and Configuration - Incoming Call History Icon - Directory Functions Icon - Redial History Icon - Menu Cursor Keys