基于以太网的话音和数据系统的实现

Implementation of Voice and Data Communication System Based on Ethernet

介绍了一种基于以太网的话音和数据通信系统的实现。该系统由一个高级终端、若干普通终端和一个以太网交换机组成。高级终端和普通终端都支持话音、非IP数据和IP数据。各种业务之间相互独立,互不干扰。终端的硬件结构基于MPC860T、DSP和FPGA,软件采用模块化设计,使用VxWorks实时多任务操作系统,采用广播技术和话音叠加实现多个终端间的电话会议功能。

This paper introduces the voice and data communication system based on Ethernet. The system consists of a captain terminal, several common terminals and an Ethernet switch. All terminals support voice, non-IP data and IP data. All kinds of services are completely independent. The hardware of terminals is based on MPC860T, DSP and FPGA. The software of terminals adopts modular design. VxWorks realtime multi-service operating system is used and telephone conference among terminals is realized by multicast technique and voice superposition.