Network congestion control is a very important problem of network designing and management. This paper discusses the characters of congestion control and methods to congestion on the private integrated service communication network (FRPISCN) which is based on frame relay network.%有关网络的拥塞控制是网络设计和管理中一个重要问题.论述基于帧中继网络开发的专用综合服务通信网络（FRPISCN）的拥塞控制的特点和实施拥塞控制的方法.
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