PhoneTray Dialup allows you to receive and screen phone calls while you are online. The program uses your V.92 modem and Call Waiting service from your phone company to detect an incoming call. If you have Caller ID on Call Waiting, also called Call Waiting ID or Visual Call Waiting, it will show the caller's name and number, so you can decide if you want to answer the call or ignore it. It's like Internet Call Waiting with no monthly fees, no ads and no spyware.