busy channel meaning in English

繁忙通道
忙碌信道
忙线路
占用信道

One of the characteristics of gprs service different from real - time voice service is that it requires very low erroneous frame rate . the accuracy of packet data can be guaranteed through the mechanism of retransmission , which , however , leads to longer transmission delay and low payload in spite of busy channels
Gprs业务不同于实时语音的一个特点是它要求有很低的误帧率，这可以通过重传机制保证分组数据的正确，但重传将使传输时延大、信道尽管很忙但有效的负荷却低。