ATL Telecom AM30 - Manual (Page 169)

ATL Telecom User Guide
AM30
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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 Internet access to its customers, usually for a fee.
LAN Local
Area Network
A network limited to a small geographic 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 ROUTER 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 (installs between phone and jack) and wall-
mount (telephone 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 computer 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 private IP addresses on
your LAN.
network
A group of computers that are connected together, allowing them to
communicate with each other and share resources, such as software, files, etc. A network can be
small, such as a LAN, or very large, such as the Internet.
network mask A network mask is a sequence of bits applied to an IP address to select the
network ID while ignoring the host ID. Bits set to 1 mean "select this bit" while bits set to 0 mean
"ignore this bit." For example, if the network mask 255.255.255.0 is applied to the IP address
100.10.50.1, the network ID is 100.10.50, and the host ID is 1. See also binary, IP address,
subnet, "IP Addresses Explained" section.
NIC
Network Interface Card
An adapter card that plugs into your computer and provides the physical interface to your network
cabling, which for Ethernet NICs is typically an RJ-45 connector. See Ethernet, RJ-45.
packet Data transmitted on a network consists of units called packets. Each packet contains a
payload (the data), plus overhead information such as where it came from (source address) and
where it should go (destination address).
ping
Packet Internet (or Inter-Network) Groper
A program used to verify whether the host associated with an IP address is online. It can also be
used to reveal the IP address for a given domain name.
port
A physical access point to a device such as a computer or router, through which data
flows into and out of the device.
POTS Plain Old Telephone Service
Traditional analog telephone service using copper telephone lines. Pronounced "pots." See also
PSTN.
POTS splitter See splitter.
PPP Point-to-Point Protocol
A protocol for serial data transmission that is used to carry IP (and other protocol) data between
your ISP and your computer. The WAN interface on the ROUTER uses two forms of PPP called
PPPoA and PPPoE. See also PPPoA, PPPoE.