连接到因特网的方法，适配装置，网络节点和交换中心。
Method for connecting to Inter network, adapter device, network node and switching center.
交换机可以通过应用电源，和将装置与端口连接进行很简单的设置。
Switches are simple to set up by applying power and connecting devices to the ports.
交换机(10)包括一个交换控制(42)装置和一个网络连接装置(44)，用来跟另一个交换机(12)中的一个其它网络连接装置通信。
The exchange (10) comprises a switch control (42) means and a network connection device (44) for communication with one other network connection device in another exchange (12).
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