The ML17928 2-line Speakerphone with Caller ID/Call Waiting allows you to dial and receive calls on two different phone lines and its Caller ID/call waiting allows you to view the name, number, time and date of incoming calls at a glance, even those on call waiting. A Clearspeak dial-in-base speakerphone, you can speak and listen without holding the handset. This leaves your hands free to do other things and lets more people in on the conversation.