Direct Serial Communication and Serial Encapsulation

This Communication Driver to match those settings.

Serial encapsulation enables serial communication with a target device that is connected to a terminal server on your TCP/IP or UDP/IP network. The terminal server is like a virtual serial port. It converts TCP or UDP messages to serial data and then relays them to the connected device. If you plan to use serial encapsulation, the target device should already be connected to the terminal server, and you need to know the IP address of the terminal server and the port number assigned to the device.