A method of providing a ringback tone to a calling party. The method includes receiving a call directed to a subscriber from the calling party. At least one of an adaptive ringback tone and an actionable ringback tone is provided to the calling party. The adaptive ringback tone is based on state dat...http://www.google.com.au/patents/US8019072?utm_source=gb-gplus-sharePatent US8019072 - Method and apparatus for providing ringback tones
