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