ＱｏＳ管理近年来引起了人们的关注，尤其是分布式多媒体系统中的ＱｏＳ管理更是一研究热点．本文则独辟蹊径，探讨点到点可视电话系统中的端到端的ＱｏＳ管理，以填补当前研究中的一个空白．本文给出了可视电话系统中的ＱｏＳ参考模型、管理策略以及可视电话系统的结构 QoS management has aroused people’s attention in recent years, especially QoS management in distributed multimedia system is a hot research topic. This article is unique and explores end-to-end QoS management in point-to-point videophone systems to fill a gap in current research. This paper presents QoS reference model in video phone system, management strategy and the structure of videophone system