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Aiming at the application demand of voice communication between user terminals in the simulated training environment, a design and implementation method of embedded network voice communication terminal based on STM32 and μCOSIII is proposed. The hardware module of communication terminal is based on STM32 microcontroller, voice communication module, LCD display module and SD card storage module. The embedded real-time operating system μCOSIII is transplanted in order to enhance the real time and stability of the control system, and the user interface management system STemWin is used to manage LCD module. The signal exchange protocol of speech communication is designed, and the realization of the communication function software based on TCP/IP protocol is completed. In order to detect the voice communication function of communication terminal, a communication server software based on .NET Framework platform is designed, which is responsible for managing the communication terminal and forwarding the communication data. The experimental results show that the user interface of the communication terminal is good, the data transmission is stable and the communication function is reliable.

Design of Embedded Network Voice Communication Terminal Based on STM32 and μCOSIII