. . . . "The inability for main characters who answer the phone to either hang up the phone, acknowledge the caller, or say any \"good-bye\" equivalent. This is because phone calls are often done solely for exposition's sake. If there is no split-screen and the other end is not heard by the audience, characters are also required to repeat back everything the person on the other end says to them. Examples of TV Telephone Etiquette include:"@en . . . . . "The inability for main characters who answer the phone to either hang up the phone, acknowledge the caller, or say any \"good-bye\" equivalent. This is because phone calls are often done solely for exposition's sake. If there is no split-screen and the other end is not heard by the audience, characters are also required to repeat back everything the person on the other end says to them. Examples of TV Telephone Etiquette include:"@en . . . . . . . . "TV Telephone Etiquette"@en . . . .