(Different makes of terminal server offer different kinds of interconnection. The other side of the terminal server connects through network interface cards ( NIC) to a local area network ( LAN), usually an Ethernet or token ring LAN, through modems to the dial-in/out WAN, or to an X.25 network or a 3270 gateway.
The terminals connect to the terminal server from their RS-232C or RS-423 serial port. A terminal server, also sometimes called a communication server, is a hardware device or server that provides terminals, such as PCs, printers, and other devices, with a common connection point to a local or wide area network ( WAN).
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