In data communications,a flow control algorithm in which the sending host awaits acknowledgement,from the receiving host,that error free frames have been received before transmitting further frames.

• 数据通信技术中的一种数据流控制算法,按此算法,发送中主机在传送下一帧之前必须等待接收主机的确认信号以确认接收主机收到了无错误的帧。