Several wiring layouts are in use, because the null modem connection is not covered by a standard.

有多种连接方式可供选择，因为标准中并未涵盖零调制解调器连接。

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If you want to use 9-pin null modem cabling, see the Resources section for more information about null modem setup.

如果您希望使用9针零调制解调器电缆，请参见参考资料部分以了解有关零调制解调器设置的详细信息。

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Before starting, make sure that you have connected the null modem cable between the development and target machines.

开始之前，请确保已使用零调制解调器电缆将开发计算机和目标计算机连接起来。

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Ideally, that machine would have no network connection (as it would be a prime break-in target), and be reported to via null-modem serial cable only.

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