The big problem with dial-up connections to the Internet has always been the incompatability between telephone and Net. If your are connected to the Net, you can`t receive telephone calls, as the line is busy. If you still use this system, have a look at PhoneTray Dialup.
PhoneTray Dialup lets the user continue on-line without needing to lose important calls. The program lets you receive and see, on-screen, the calls you receive while you are connected to the Net. For this it uses the call-waiting service of your telephone company. PhoneTray Dialup will also show the caller name and number, for you to know who it is before accepting the call or not.