Expandable up to 12 stations, Call Waiting Caller ID - This valuable feature displays the name and number of the caller in call waiting even while you're on the phone. Up to 200 of the most recent Caller ID names and numbers are stored and can be dialed with the touch of a button, 200 Name & Number Directory - for easy, one-touch dialing, 2-way Speakerphone - answer calls and work hands-free, One-Station / All Station page - making paging announcements to one or all stations with the push of a button, Station to Station Intercom - make calls to up to two stations simultaneously without tying up phone lines, Call Transfer, Privacy Protection - all calls are private unless the talking station releases privacy protection, Power Failure Protection - vital information is retained in the event of a power failure and phone calls can still be made and received, 20 Name & Number Autodial, 3-Way Call Conferencing (with 2 lines) - One incoming line can conference with two stations or two incoming lines can conference with one station, Hold with Reminder - allows you to place a call on hold and audibly alerts you if you leave a call on hold for an extended period of time, Line Status Indicator, Voice Mail Indicator* - LED flashes when new voice mail is received. LCD indicates which lines have new voice mail, Automatic Line Selection, Do Not Disturb (DND) - Silence the phone so you can work without distractions, Headset Jack - connect any standard telephone headset for hands-free calling, Auto Redial - Automatically redials a busy or unanswered phone call on demand, 2 Data / Fax Ports - Allows easy connection of a personal computer, notebook computer or fax machine, Station to Station ID - The LCD displays intercom station's ID, This phone (identical model) is also branded as a Uniden model 420i.