VTech t2453 2.4 GHz Analog Cordless Phone with Answering System and Caller ID (White) 2.4 GHz analog signal Answering system with 3 mailboxes, 15 minutes of recording time Caller ID with call waiting, 90-name-and-number caller ID history 10-number speed dial with 50-name-and-number-phone directory 30-channel operation, 2.5-millimeter headset compatible