This would be a good feature to have. Just the other day a prospect called me back on I set an appointment up for him. However he was in the queue to be the next one called and there's no way to skip over him. So I clicked dial and then I immediately clicked hang up and hoped that he didn't call me back which he didn't so it worked out fine for that instance. But being able to hit a "next" button and not make the call at all would have been a better solution.