ADTRAN Express 3000 SP Especificaciones descargar pdf (Pagina 108)

Appendix F. Glossary

F-2 Express 3000 SP User Manual 61203153L3-20

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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ADTRAN Express 3000 SP Especificaciones Pagina 108