IMT-2000 will start its services as early as 2001. Its services are supposed to include broadband, global, and multi-media services. As for the operation and management of IMT-2000, it is important to make the best use of Wideband CDMA technology. To do so, the observation of the traffic fluctuation and transmission conditions is indispensable. This paper proposes 1) an integrated architecture for a telecom management system and 2) its application to the IMT-2000 base transceiver station management system. The proposed architecture uses CORBA based operations support platform. The unified object model, work coordination facility, and common facilities provide the framework for information sharing and the cooperation between the operation systems. IMT-2000 specific management functions such as the GIS based layered data management function are also realized using the proposed architecture.