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介绍了一种采用一对平衡传输收、发器在一对电话线（双绞线）上实现全双工基带数据传输方法的设计思想、硬件组成及通信协议设计，并对所采用的通信协议作了详细分析，最后给出了实际测试及应用结果。
A design method, a hardware composition and a communication protocol design of a method for transmitting full-duplex baseband data over a pair of telephone lines (twisted pair) using a pair of balanced transmission receivers and transceivers are introduced. The communication protocol Made a detailed analysis, and finally gives the actual test and application results.