Glossary - ZyXEL Communications Prestige 304 User Manual

A
ADSL Asymmetrical Digital Subscriber Line is an asymmetrical technology which means that
the downstream data rate of the line is much higher than the upstream data rate. ADSL
operates in a frequency range that is above the frequency range of voice services, so the
two systems can operate over the same cable.
ARP Address Resolution Protocol is a protocol for mapping an Internet Protocol address (IP
address) to a physical computer address that is recognized in the local network.
Asynchronous Transfer Mode. ATM is a LAN and WAN networking technology that
ATM
provides high-speed data transfer. ATM uses fixed-size packets of information called
cells. With ATM, a high QoS (Quality of Service) can be guaranteed.
B
Bandwidth This is the capacity on a link usually measured in bits-per-second (bps).
A Binary Digit (either a one or a zero); a single digit number in base-2. A bit is the
Bit
smallest unit of computerized data.
Boot Module Boot Module Commands, available in the debug mode via SMT (some devices may not
Commands have SMTs), help you initialize the configuration of the basic functions and features of
your device(s) such as uploading firmware, changing the console port speed and
viewing product-related information.
Byte A set of bits that represent a single character. There are eight bits in a byte.
C
Command Line A command line interface is a computer environment in which you enter predefined
Interface commands on the command line to modify, configure and display information about a
device or devices. A command line is the line on the display screen where a command
is expected. Generally, the command line is the line that contains the most recently
displayed command prompt. An interface is a set of commands (for example, a ZyXEL
Command Line Interface) or menus (for example, a ZyXEL web configurator) used to
communicate with a program. A command-driven interface is an interface in which you
enter commands.
Crossover A cable that wires a pin to its opposite pin, for example, RX+ is wired to TX+. This
Ethernet Cable cable connects two similar devices, for example, two data terminal equipment (DTE) or

Glossary

Prestige 304 Broadband Sharing Gateway with 4-Port Switch
Glossary
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