Ringback number

A ringback number is a designated phone number that is used to play ringing sounds back to a caller while they wait for the recipient to answer. Instead of the traditional ringtone that the caller hears, this service allows the caller to hear music or another message until the recipient picks up the call. Ringback tones are often used for personalization and can include a variety of sounds, such as popular songs, jingles, or custom messages.