Cortelco 2-line telephone - Caller ID, call waiting caller ID - 99# Memory - Wide angle, adjustable, backlit (blue) LCD display - Voice mail indication (fsk/stutter/90V/24V) - Mute with LED indicator - Hold with LED indicator - PBX hold (programmable) - On hook pre-dial - Directory button (save up to 99 names and numbers) - 5 One touch and 5 two touch speed dial memory locations with up to 24 digits - Programmable flash - Conference - Enhanced redial for last 10 numbers - Handset receiver volume control (4 levels) - Programmable ring cadence (10 positions) - Programmable ring volume (off to 7) - Programmable VIP alert - Data port - Speakerphone - Speakerphone volume control (8 levels) - DTMF dialing - Programmable area code - 2.5mm/RJ type headset jack - Wall mountable - Black.