How do you figure out who calls and how long they talk without using caller id?

Question

My mom and her friend were telling me about this totally obvious trick to see who called you && how long you talked without using caller id or the phone bill. I think they were just trying to make me chicken, but is there really a way to do that?

Answer 1

There is a program on the web called 'call wave' that you can subscribe to that will help you do that and it is a lot cheaper then caller ID