ADTRAN Express 3000 SP User Manual page 108

Appendix F. Glossary
data communications equipment (DCE)
A category of devices which typically includes modems and print-
ers. DCEs interface with DTEs.
datagram
A Layer 3 data construct in which the datagram header contains
source destination addresses for routing purposes.
data terminal equipment (DTE)
User terminal equipment which creates information for transmis-
sion, for example, a user's PC.
data-circuit terminating equipment (DCE)
Carrier's equipment that is the DTE's interface to the network.
DIP switch
A very small toggle switch. The Express 3000 SP contains two DIP
switches: one for changing data rates and one for resetting default
parameters.
graphical user interface (GUI)
A computer interface that permits users to directly manipulate ob-
jects which are displayed on the monitor. Using pointing devices
(such as a mouse), the screen objects can be modified and con-
trolled.
Integrated Services Digital Network (ISDN)
An international communications standard for digital transmis-
sion of data, voice, and video over telephone lines.
Internet Services Provider (ISP)
A company or organization that provides Internet access to the
public or to other organizations, usually for a fee. Most offer a full
set of Internet services (access to E-Mail, Newsgroups, FTP, and
Telnet, at a minimum), and provide either hourly rates or a flat fee
for a fixed number of hours of access.
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