The bottom function-realizing module is a key part of the Common Design Platform(CDP) of Multimedia Simulation and Training System(MSTS) for the Stored Program Controlled Telephone Exchange(SPCTE). Hardware configuration is the foundation of the SPCTE, the important part of the bottom function-realizing module. The modeling of the hardware of the SPCTE is proposed. Two typical SPCTE are used to explain and verify the models. The application of the models in the CDP is also given.%底层功能实现模块是程控交换机多媒体仿真训练系统通用设计平台的关键部分。硬件配置是交换机工作的基础，是底层功能实现模块的重要组成部分。该文介绍了交换机硬件系统的建模，利用两种典型机型硬件实际的工作情况，解释并验证了所建立的通用功能流程图，并介绍了参数接口的管理与应用。
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