![]() Terminals can use TCP/IP for a Telnet connection to a host, LAT to a Digital Equipment Corporation host, or TN3270 for a Telnet connection to an IBM host with 3270 applications. The terminals can be PCs, terminals that emulate 3270s, printers, or other devices with the RS-232/423 interface. Some terminal servers can be shared by hundreds of terminals. The connection resources inside the terminal server are usually shared dynamically by all attached terminals. Some can be ordered in different configurations based on customer need.) The use of a terminal server means that each terminal doesn't need its own network interface card or modem. (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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