| 摘要 |
A user sends a service request to an SCP through an SSF. Then, the SCP (Service Central Point) receives the service request through the SSF (Service Switching Function) interface and issues a request of a service to the application controller. The application controller obtains from the service applicator the specification data corresponding to the kind of service contained in the service request, and then sends them to the software component controller. The software component controller obtains the software component according to the software component number contained in the specification data, and then returns it to the application controller. Then, the software component controller checks whether or not the software component is available for the specified kind of service, and returns the software component only when it is available. When it is not available, the application controller is notified. The application controller analyzes the software component or a message returned by the software component controller, then calls a new software component or sends a message to the SSF through the SSF interface.
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