Cyclades 2.3.0, ACS48 user manual Telnet, Terminal Server, Tty, Udp, Rack Height Unit

	Glossary
	been ignored by the client, the server assumes the worst and
	the connection is closed.
	The keepalive timer provides the capability to know if the
	client's host has either crashed and is down or crashed and
	rebooted.
Telnet	A terminal emulation program for TCP/IP networks such as
	the Internet. The Telnet program runs on your computer and
	connects your PC to a server on the network. You can then
	enter commands through the Telnet program and they will be
	executed as if you were entering them directly on the server
	console
Terminal Server	A terminal server has one Ethernet LAN port and many
	RS-232 serial ports. It is used to connect many terminals to
	the network. Because they have the same physical interfaces,
	terminal servers are sometimes used as console access
	servers.
TTY	1. In Unix, refers to any terminal; sometimes used to refer to
	the particular terminal controlling a given job (it is also the
	name of a Unix command which outputs the name of the
	current controlling terminal). 2. Also in Unix, any serial port,
	whether or not the device connected to it is a terminal; so
	called because under Unix such devices have names of the
	form tty.
UDP	User Datagram Protocol uses a special type of packet called
	a datagram. Datagrams do not require a response; they are
	one way only (connectionless). Datagrams are usually used
	for streaming media because an occasional packet loss will
	not affect the final product of the transmission.
U Rack Height Unit	A standard computer rack has an internal width of 17 inches.
	Rack space on a standard rack is measured in units of height
	(U). One U is 1.75 inches. A device that has a height of 3.5
	inches takes 2U of rack space.

AlterPath Console Server User Manual 153