Aastra M9316 NT2N31 Single-Line Phone (Black/Refurbished)Key Features: Single Line telephone 3x16 adjustable backlit display Secured numbers for personal codes SuperFlash and Intelligent Viewing System 50 name and number Call Log 50 name and number Directory Speakerphone with mute CLASS Voltage Message Waiting indicator Eight programmable memory keys for frequently called numbers and or feature access codes Last five number redial Preferred Name Match Parallel line jack for extension, fax, or modem Visual