Bittel business telephone, Caller ID telephone Active memory for incoming calls 116 . FSK/DTMF Caller ID system 16-digit 16 line outgoing call records 6 local area code setting,6 long-distance code setting Pre-dial,amend and dial back Baby call Built-in real date,time clock and week display 12-digit 12-line indirect memory keys Flash time 600ms Pause Auto-recall when the line is busy LCD contrast five levels adjustable ,3 level defaults Handfree Ringing and Message Waiting Light