SmartVoice Gateway(s) User Guide
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YML83 Rev
Microfilter
In splitterless deployments, a microfilter is a device that removes the data frequen-
cies 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 55.55.55.0 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
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.
Pass-through Line
The line that connects the NB9/NB9W to a POTS line may be referred to as a pass-
through line
packet
Data transmitted on a network consists of units called packets. Each packet con-
tains 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 My ADSL Modem uses two forms of PPP called PPPoA and PPPoE.
See also PPPoA, PPPoE.
PPPoA
Point-to-Point Protocol over ATM One of the two types of PPP interfaces you can
define for a Virtual Circuit (VC), the other type being PPPoE. You can define only
one PPPoA interface per VC.
PPPoE
Point-to-Point Protocol over Ethernet One of the two types of PPP interfaces you
can define for a Virtual Circuit (VC),the other type being PPPoA. You can define one
or more PPPoE interfaces per VC.
