Definition of "ringback" []

• The sound transmitted back to a caller to indicate that the telephone they are calling is ringing. (noun)

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• "They're known as ringback tones for Verizon and Altell, Answer Tones for AT&T, Call Tones for Sprint, and CallerTunes for T-Mobile and Vodafone."
• "Internet; and a variety of mobile entertainment services, such as ringback tones, music and video, offered through leading wireless carriers around the world."
• "GameHouse. com, one of the premier casual games destinations on the Web; and a variety of mobile entertainment services, such as ringback tones, offered to consumers through leading wireless carriers around the world."