Abstract: With the development of IP technology and update of dispatching equipment,multimedia dispatching system is more intuitive and user-friendly than traditional dispatching system．So the power dispatching system introduces soft-switch technology to develop multi-media dispatching system．On the basis of in-depth study of CTI technology and its JTAPI standard protocol interface,according to the requirements of power communication dispatching system,this paper proposes a multimedia dispatching system architecture based on Cisco Unified Communications platform．For the basic functions of dispatching server in the framework -such as outside call,conference,force in,force break etc.,this paper gives a Java develop specific method based on JTAPI standard interface.

Key words: JTAPI,Multimedia dispatching,Conference,Force in,Force break