Stupid Idea

I think this might be a useless and idiotic thing to do, I admit, but I want to write a program that will use a telephone modem to dial all the phone numbers within a range, and, instead of logging which numbers belong to other modems (there won't be many of those), simply have a computer voice say, "Sorry, wrong number..." and then hang up. Could you imagine that? Kind of makes me laugh, you know? A computer, after all, admitting a mistake and all that? OK, I knew it was a dumb idea.