Research And Functional Test Of Call Control Model In Softswitch

The main design thoughts of Softswitch are the separation of call control from service logic, and the separation of call control from media control. It integrates the service capability of existing network and opens core capability and resource to the 3rd party application.Call control function is a core function of Softswitch. The software design of call control model for Softswitch is studied in this thesis, and the test scheme of call control model for Softswitch is given. The scheme is mainly based on the different characters of Softswitch call control model test and traditional switch test.Given requirements for call control model in Softswitch architecture are analyzed in this thesis. The Intelligent Network call control model can be used as a prototype. However, the deficiencies of Intelligent Network call control model applied in Softswitch should be made up.Firstly, the whole Softswitch software architecture is presented in this thesis. Then, based on the call control model of Intelligent Network, a call control model applicable to Softswitch is proposed. This call control model meets the requirements of the separation of call control from services logic, as well as the separation of call control from media control.The functional test of the call control model is a key part to insure the quality of this model. Based on the design of the call control model, a four-layer test scheme is introduced in this thesis. The test scope, test environment and each layer's design are analyzed respectively. Test case design plays a crucial role in the test of call control model, some design methods of test case for Softswitch is given at the end of this thesis.