We don't have it at all. When I did have it, if it was a long-distance call coming in, I might tell the person I was talking to that I would call them back and go on and end the call. If it was local and the current call was not extremely important, I might click over and tell the incoming caller that I would call him/her back. If I was on an important or long-distance call, I would ignore the call waiting. Personally, I don't really like it.