Panasonic's KX-TG4322B expandable phone system comes packed with features to add to your calling convenience. The three-line, backlit LCD display with Caller ID makes it easy to see who's calling, even when you're in the middle of a call. Up to two other people can join in on your conversation with an outside caller when you add an extra handset or two. Or you can select the privacy mode on your handset to prevent others from barging in on your conversation.