ZyXEL Communications Prestige 782R, User Manual, Page: 154 / 166

Prestige 782R G.SHDSL Router
Glossary G
were designed for departments, although the latter accurately describes a LAN as well.
LANs have different topologies, the most common being the linear bus and the star
configuration.
LATA Local Access and Transport Area is a geographic territory used primarily by local
telephone companies to determine charges for intrastate calls. As a result of the Bell
divestiture, switched calls that both begin and end at points within the LATA
(intraLATA) are generally the sole responsibility of the local telephone company.
Conversely, calls that cross outside the LATA (interLATA) are passed on to an Inter
eXchange Carrier (IXC).
LEC Local Exchange Carrier. The local phone companies – either a Regional Bell
Operating Company (RBOC) or an independent phone company (e.g., GTE) – that
provide local transmission services.
LED Light Emitting Diode. LEDs are visual indicators that relay information about the status
of specific Prestige functions to the user by lighting up, turning off or blinking. LEDs
are usually found on the front panel of the physical device. Examples include Status,
Power and System LEDS.
Linux A version of the UNIX operating system designed to run on IBM Compatible
computers.
LLC-Multiplexing One VC carries multiple protocols with protocol identifying information being contained
in each packet header. Despite the extra bandwidth and processing overhead, this
method my be advantageous if it is not practical to have a separate VC for each
carried protocol, eg., if charging heavily depends on the number simultaneous VCs.
Loop-reach Loop reach defines speed that can be attained at various distances. This is very
important for DSL technology as distance from the CO (Central Office) influences
attainable speeds.
MAC On a local area network (LAN) or other network, the Media Access Control (MAC)
address is your computer's unique hardware number. (On an Ethernet LAN, it is the
same as your Ethernet address.) The MAC layer frames data for transmission over the
network, then passes the frame to the physical layer interface where it is transmitted
as a stream of bits.
Name Resolution The allocation of an IP address to a host name. See also DNS.
NAT Network Address Translation is the translation of an Internet Protocol address used
within one network to a different IP address known within another network. See also
SUA.
NDIS Network Driver Interface Specification is a Windows® specification for how
communication protocol programs (such as TCP/IP) and network device drivers should
communicate with each other.