AT&T ML17928 2-Line Speakerphone with Caller ID

2-line operation Caller ID/Call waiting 18 number speed dial 100 name and number phonebook directory Speakerphone 99 name and number caller ID history Line power mode Selectable ringer tones for both lines Headset compatible (2.5mm jack) Line status indication Data port Hold mute English/Spanish/French set up menu Automatic line selection Chain dialing Display dial