The design of communication protocol conversion equipment is discussed from both hardware and software.

从硬件和软件两方面论述了通信规约转换器的设计。

Some type of data conversion equipment is required to change the digital machine signals to a form suitable for transmission over these facilities.

为了把数字化机器信号变换为适合在这些设备中传输的信号形式，需要使用某种类型的数据变换设备。