Patent ID: 8326273

Claim:
A system for playing a color ring back tone, comprising: a home location register; a calling user's mobile switching center/visiting location register; a called user's mobile switching center/visiting location register; and a color ring back tone control server; wherein the home location register, the calling user's mobile switching center/visiting location register, and the called user's mobile switching, center/visiting location register are common network element devices in a communication system, and wherein the communication system includes a state presence server; wherein the state presence server is used to obtain and provide dynamic information of color ring back tone users or devices and accomplish an integrated application with the color ring back tone control server, and wherein the dynamic information of color ring back tone users or devices comprises state information, location information and capabilities and user preference information, wherein the color ring back tone control server plays one of a plurality of color ring back tones associated with the called user based on a playing priority defined by the called user; wherein the playing priority defined by the called user is as follows: a color ring back tone chosen based on the called user's current state information has a playing priority over a color ring back tone chosen based on the calling user's calling number, and a color ring back tone chosen based on the calling user's calling number has a playing priority over a default color ring back tone.