Caller ID is an application that works in the background and provides a visual alert to inform you about the person currently calling on the phone, so you can identify and make decisions about callers before answering.
Caller ID uses your Address Book contacts to match and identify a phone number. To receive the caller ID information, you need a modem or a Bluetooth enabled mobile phone.
Caller ID can interact with other applications via AppleScript when a phone call arrives, eg. it can automatically pause your iTunes.
Requirements: Macintosh, Power Mac, iBook, PowerBook, eMac, iMac, Mac mini, MacBook, MacBook Pro and Mac Pro running Mac OS X 10.3.9 or newer.