IPUX ICS2300 Advanced Installation Guide - Manual (Page 70)

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internal network appear to the Internet as a single
address. For routing messages properly within your
network, each device requires a unique IP address. But
the addresses may not be valid outside your network.
NAT solves the problem. When devices within your
network request information from the Internet, the
requests are forwarded to the Internet under the
router's IP address. NAT distributes the responses to
the proper IP addresses within your network.
Network A network consists of a collection of two or more
devices, people, or components that communicate with
each other over physical or virtual media. The most
common types of network are:
LAN – (local area network): Computers are in close
distance to one another. They are usually in the same
office space, room, or building.
WAN – (wide area network): The computers are in
different geographic locations and are connected by
telephone lines or radio waves.
NWay Protocol A network protocol that can automatically negotiate the
highest possible transmission speed between two
devices.
P
PCM PCM (Pulse Code Modulation) is a technique for
converting analog audio signals into digital form for
transmission.
PING Packet Internet Groper, a utility used to determine
whether a specific IP address is accessible. It functions
by sending a packet to the specified address and waits
for a reply. It is primarily used to troubleshoot Internet
connections.
PPPoE Point-to-Point Protocol over Ethernet. PPPoE is a
specification for connecting the users on an Ethernet to
the Internet through a common broadband medium,
such as DSL or cable modem. All the users over the
Ethernet share a common connection.