在现有的PSTN 网络上构建了一个嵌入式终端平台,该平台基于RISC 架构ARM 处理器S3C2440A,符合国际电联ITU-T 建议的H.324 协议。此系统平台在原有的MCU+DSP 的架构基础上提出一种纯基于RISC 架构的ARM 处理器的可视电话平台,该方案更加灵活, 可以用于现有的办公,家庭等环境。本文介绍了该系统的结构以及实现方法。关键词:RISC 架构,S3C2440A,PSTN,H.324Abstract:Build a embedded platform of the ARM920T core RISC CPU S3C2440, which canconnected to PSTN networks. This pure RISC system comply with the ITU-T H.324,developed from the MCU+ASIC and the MCU+DSP architecture, is more flexible. The VideoPhone based on this system could be widely used in the office and the house. Thisarticle briefly introduce the architecture and Realization method.Keywords: RISC,S3C2440A,PSTN,H.324
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