IDEC WindSRV - Manual (Page 124)

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How To... Use Ethernet Encapsulation
The Ethernet Encapsulation mode has been designed to provide communications with serial devices connected to
terminal servers on the Ethernet network. A terminal server is essentially a virtual serial port that converts TCP/IP
messages on the Ethernet network to serial data. Once the message has been converted to a serial form, users can
connect standard devices that support serial communications to the terminal server. The diagram below shows how the
Ethernet Encapsulation mode should be employed.