SL1100 24-Button Full Duplex Tel (Black) Digital 24 Button Black Proprietary Telephone Backlit 3 line, 24 character display 2-Step adjustable angle Programmable keys with red/green LEDs Backlit dialpad 4 Soft keys 9 Fixed feature keys Navigator key Headset port Full duplex speakerphone 20 number personal directory 1000 number system/group directory Dual-color call indicator lamp 8 Selectable ring tones Power saving sleep mode Do not disturb Call forwarding Mute Flash Hold Headset jack 9 Foot handset cord