一根 IBM串口直连线缆（serial nullmodem cable）。
通过两个节点的串口，使用一根直连线缆将它们连接起来。
Use a null modem cable to connect the two nodes through their serial ports. Now test the serial connection, as follows.
通过两个节点的串口，使用一根直连线缆将它们连接起来。
Use a null modem cable to connect the two nodes through their serial ports. Now test the serial connection, as follows.
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