Station identification
Station identification (ident, network ID, channel ID or bumper) is the practice of radio and television stations and networks identifying themselves on-air, typically by means of a call sign or brand name (sometimes known, particularly in the United States, as a "sounder", "stinger" or "sting", more generally as a station or network ID). This may be to satisfy requirements of licensing authorities, a form of branding, or a combination of both.