I would like to give anyone who calls my line while I'm on another call the option to press a number code to have Verizon call me back for them as soon as I'm off the phone. The other available options just don't suit my needs. I think that "call waiting" is rude. It's the equivalent of saying "I think our current conversation is less important than this unknown call coming in. Please hold." I have an answering machine which is more convenient to me than voice mail. Therefore having busy line calls go to voice mail is an inconvenience. What I do now is have a busy greeting which is "Hello, this is (my name). I'm on the phone right now, please call me back later." followed by a minute or so of recorded busy signal. I'd like to have a busy greeting which says "Hello, this is (my name). I'm on the phone right now, but if you press (number code) and hang up, Verizon will call me back for you as soon as I'm off the phone.".