Description: CallerID Monitor is a powerful full-featured Caller ID detection software that will turn your PC into advanced Caller ID device. Identify callers using CallerID Monitor before you answer to call. It uses your modem or ISDN adapter and Caller ID service provided by your local phone company in order to identify who's calling. You can use CallerID Monitor while you're online. If you have ISDN adapter, Call Waiting feature is supported.