Two-line speakerphone features Caller ID/Call Waiting and lets you dial and receive calls on two different phone lines. Speakerphone lets you speak and listen without holding the handset, leaves your hands free to do other things and lets more people participate in the conversation. 3-Party Conferencing allows you to have a three-way conversation between you and persons on two other lines; inside, outside or combination. Backlit screen display lets you view information even in low light. Speakerphone also offers corded handset, 99-name/number history, 100-name/number phonebook, selectable ring tones for both lines, chain dialing, hold function, mute function, English/French/Spanish setup, 24-number speed dial, headset jack (2.5mm), and line-status indication.Two-line speakerphone features Caller ID/Call Waiting and lets you dial and receive calls on two different phone lines. Speakerphone lets you speak and listen without holding the handset, leaves your hands free to do other things and lets more people participate in the conversation. 3-Party Conferencing allows you to have a three-way conversation between you and persons on two other lines; inside, outside or combination. Backlit screen display lets you view information even in low light. Speakerphone also offers corded handset, 99-name/number history, 100-name/number phonebook, selectable ring tones for both lines, chain dialing, hold function, mute function, English/French/Spanish setup, 24-number speed dial, headset jack (2.5mm), and line-status indication.