Wyse 3315SE, Reference Manual

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Glossary 222
CTS Clear to Send. Control signal sent from the DCE. Indicates that
the DTE may send data.
DCE Data Communications Equipment. Devices that provide the
functions required to establish, maintain, and terminate a data
transmission connection, e.g., a modem.
DHCP Dynamic Host Configuration Protocol. A protocol for assigning
dynamic IP addresses to devices on a network.
DNS Domain Name Service. A general-purpose distributed,
replicated, data query service chiefly used on the Internet for
translating host names into Internet addresses.
Download To transfer data from a processing unit to an attached device.
For example, from a host to the terminal.
DSR Data Set Ready. A hardware signal sent by a communications
device to indicate readiness to send and receive data.
DTE Data Terminal Equipment. A device that acts as the source and/
or destination of data and which controls the communication
channel. DTE includes terminals, computers, protocol
converters, and multiplexors. DTE is usually connected via an
RS-232 serial line to Data Communication Equipment (DCE),
typically a modem. It is necessary to distinguish these two types
of devices because their connectors must be wired differently if
a straight-through cable (pin 1 to pin 1, pin 2 to pin 2 etc.) is to
be used. DTE should have a male connector and should
transmit on pin three and receive on pin two. It is a curious fact
that many modems are actually DTE according to the original
standard.
DTR Data Terminal Ready. A hardware signal sent by a terminal to
indicate readiness to send and receive data.
Ethernet A baseband local area network specification developed jointly
by Digital Equipment Corp., Xerox, and Intel to interconnect
computer equipment using coaxial cable and transceivers. An
Ethernet LAN provides ten million bits per second of capacity for
high-speed terminal-to-computer communication or
computer-to-computer file transfer.
FCC Federal Communications Commission. The Government body
that regulates all telecommunications originating in the U.S.,
including transmission over telephone lines.
Firmware A computer program or software stored permanently in a PROM
or ROM or semi-permanently in an EPROM.