两个或更多台站间相互完成了通信即为进行了一次交换。交换程序包括以下内容：初始呼叫、回答呼叫、确定工作频道、发送信文、回答信文、终止发送。
This applies when two or more stations achieve communication with each other. An exchange is then said to be taking place. It consists of the following.
逆转平行生命，并将非物质梦想与物质层梦想相互交换，是无法为所有人终止痛苦的。
Reversing parallel lives and trading nonphysical for physical dreams cannot end the suffering for all;
逆转平行生命，并将非物质梦想与物质层梦想相互交换，是无法为所有人终止痛苦的。
Reversing parallel lives and trading nonphysical for physical dreams cannot end the suffering for all;
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