Zte Corporation

Anbin Hu

Guoqiang Shang

Jin Sun

A system for playing a color ring back tone (CRBT) based on a user's state presence information including the network element devices of: a HLR, a calling user's MSC/VLR, a called user's MSC/VLR, a CRBT control server, and a state presence server. A method for playing a CRBT based on a user's state presence information includes: providing a state presence server in a communication system which includes a CRBT control server; establishing a physical connection channel, and defining an information interface between the CRBT control server and the state presence server; the CRBT control server obtaining the called user's current state information by exchanging information through the information interface; and the CRBT control server playing a corresponding CRBT based on the current state information of the called user and corresponding subscription information of the color ring back tone service when the user is called. Thus, the CRBT control server can play the CRBT based on a playing priority earlier defined by the called user.

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Shenzhen, China

Anbin Hu