34Mbit／s　DQDB光纤综合业务局域网

34Mbit/s DQDB Optical Fiber Integrated Service Local Area Network

本文介绍一种３４．３６８Ｍｂｉｔ／ｓＤＱＤＢ光纤综合业务局域网。该网络由双总线环形构成，采用ＤＱＤＢ协议和混合交换方式，可传输数字话音，高／低速计算机数据，高质量静止图像和压缩视频图像等综合业务。文中主要探讨该局域网的结构、性能、媒体访问协议、帧结构、传输物理层、网同步技术、用户网络接口和网络可靠性设计。

This paper proposes a 34. 368 Mbit/s DQDB optical fiber integrated service local area network, It is configured in dual bus structure, using DQDB Protocol and mixture switching, and can integrate voice, high/low speed data, high quality picture and isochron convocation video. In the paper, we discuss in mainy about network topolopy, performance, medium access control protocol, frame structure, physical transmission layer,network synchronization technology, user network interface and reliability design.