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NB1 Quick Start Guide YML781 Rev1
24 www.netcomm.com.au
in-line filter See Microfilter
Internet The global collection of interconnected networks used for
both private and business communications.
intranet A private, company-internal network that looks like part
of the Internet (users access information using web
browsers), but is accessible only by employees.
IP See TCP/IP.
IP address Internet Protocol address The address of a host (com-
puter) on the Internet, consisting of four numbers, each
from 0 to 255, separated by periods, e.g., 209.191.4.240.
An IP address consists of a network ID that identifies
the particular network the host belongs to, and a host
ID uniquely identifying the host itself on that network. A
network mask is used to define the network ID and the
host ID. Because IP addresses are difficult to remember,
they usually have an associated domain name that can be
specified instead. See also domain name, network mask.
ISP Internet Service Provider A company that provides Inter-
net access to its customers, usually for a fee.
LAN Local Area Network A network limited to a small geo-
graphic area, such as a home, office, or small building.
LED Light Emitting Diode An electronic light-emitting device.
The indicator lights on the front of the My ADSL Modem
are LEDs.
MAC address Media Access Control address The permanent hardware
address of a device, assigned by its manufacturer. MAC
addresses are expressed as six pairs of characters.
mask : See network mask.
Mbps Abbreviation for Megabits per second, or one million bits
per second. Network data rates are often expressed in
Mbps.
Microfilter In splitterless deployments, a microfilter is a device that
removes the data frequencies in the DSL signal, so that
telephone users do not experience interference (noise)
from the data signals. Microfilter types include in-line (in-
stalls between phone and jack) and wall-mount (tele-
phone jack with built-in microfilter). See also splitterless.
NAT Network Address Translation A service performed by
many routers that translates your network’s publicly
known IP address into a Private IP address for each com-
puter on your LAN. Only your router and your LAN know
these addresses; the outside world sees only the public IP
address when talking to a computer on your LAN.
NAT rule A defined method for translating between public and pri-
vate IP addresses on your LAN.