Caller ID will display the name and number of the caller on your telephone display screen. In order to use this feature you will require a telephone that can display this information or an additional call display unit.
Secure: Know who's calling before you decide whether to answer.
Convenient: View a list of the most recent incoming calls, even if you didn't answer them (depending on your phone model). And up to 50 numbers can be stored on your TV as well.