适于多种通信设备的多媒体通信终端软件

A multimedia communication terminal software over different communication devices

针对应急通信系统的需求,本文介绍了一种适用于多种通信设备的多媒体通信终端的软件实现方法。软件采用了面向对象的设计方法,根据通信设备和各种业务的特点,合理的界定了通信模块和各种业务模块之间的职能。在对通信模块接口进行合理抽象的基础上,软件实现了适用于以太网、网络电台和短波电台的通信模块。在通过不同的下层通信设备进行通信时,终端软件只需要选择不同的通信模块就能实现包括语音、视频、短信息、静态图像、电子白板和文件传输在内的多媒体通信。

Focus on the emergency communication system, a software design for a multimedia communication terminal over different communication devices is introduced in this paper. The software is implemented with OOP （Object Oriented Programruing） fashion. According to the characteristics of different communication devices and different sen ices, responsibilities of the communication module and the sen, ice modules are defined properly. Based on the abstraction of communication module＇s interface, the software implemented three communication modules for Ethernet. network radio and shortwave radio respectively. Consequently. by adapting the communication module to the corresponding communication device, the terminal can implement multimedia eommunication which is composed of voice and video communication, short message, still image, white board, and file transfer services.