Aastra M9116 Caller ID Single Line Phone (Charcoal/Refurbished)Key Features: Call Display with Visual Call Waiting Speakerphone with Mute 8 programmable memory keys Three line adjustable display with Contrast control 80 name and number Callers List 20 name and number scroll style Directory CMS Voltage Message Waiting indicator On hook dialing Compatible with Centrex, PBX or standard telephone service 15 auto dial positions Last number redial Adjustable receiver volume English French Spanish prompts Call timer