ZyXEL Communications Prestige 1600 Configuration Manual page 156

Prestige 1600 Universal Access Concentrator
LAN
LEC
MAC
NAT
NAT Server Set
NDIS
Network
NIC
Node
PAP
Port
POTS
PPP
Primary
PSTN
PTT
PVC
RADIUS
L
recommendations about telephone and data (including fax) communications systems for service
providers and suppliers.
Local Area Network is a shared communication system to which many computers are attached.
A LAN, as its name implies, is limited to a local area. This has to do more with the electrical
characteristics of the medium than the fact that many early LANs 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.
Local Exchange Carrier: one of the new U.S. telephone access and service providers that have
grown up with the recent U.S. deregulation of telecommunications.
On a local area network (LAN) or other network, the MAC (Media Access Control) 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.
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.
A NAT server set is a list of inside servers (behind NAT on the LAN) that you can make visible to
the outside world.
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.
Any time you connect two or more computers together so that they can share resources, you
have a computer network. Connect two or more networks together and you have an internet.
Network Interface Card. A board that provides network communication capabilities to and from a
computer system. Also called an adapter.
Any single computer connected to a network.
Password Authentication Protocol PAP is a security protocol that requires users to enter a
password before accessing a secure system. The user's name and password are sent over the
wire to a server, where they are compared with a database of user account names and
passwords. This technique is vulnerable to wiretapping (eavesdropping) because the password
can be captured and used by someone to log onto the system.
An Internet port refers to a number that is part of a URL, appearing after a colon (:) right after
the domain name. Every service on an Internet server listens on a particular port number on that
server. Most services have standard port numbers, e.g. Web servers normally listen on port 80.
Plain Old Telephone Service is the analog telephone service that runs over copper twisted-pair
wires and is based on the original Bell telephone system. Twisted-pair wires connect homes and
businesses to a neighborhood central office. This is called the local loop. The central office is
connected to other central offices and long-distance facilities.
Point to Point Protocol. PPP encapsulates and transmits IP (Internet Protocol) datagrams over
serial point-to-point links. PPP works with other protocols such as IPX (Internetwork Packet
Exchange). The protocol is defined in IETF (Internet Engineering Task Force) RFC 1661
through 1663. PPP provides router-to-router, host-to-router and host-to-host connections.
The P1600 in primary mode provides concentration, network management, Internet access and
routing functions as well as uses the FlexWan port as the interface to the trunk.
Public Switched Telephone Network was put into place many years ago as a voice telephone
call-switching system. The system transmits voice calls as analog signals across copper twisted
cables from homes and businesses to neighborhood COs (central offices); this is often called
the local loop. The PSTN is a circuit-switched system, meaning that an end-to-end private circuit
is established between caller and callee.
The generic European name is usually used to refer to state-owned telephone companies.
Permanent Virtual Circuit. A PVC is a logical point-to-point circuit between customer sites. PVCs
are low-delay circuits because routing decisions do not need to be made along the way.
Permanent means that the circuit is preprogrammed by the carrier as a path through the
network. It does not need to be set up or torn down for each session.
Remote Authentication Dial-In User Service (RADIUS). A client/server security protocol created
by Livingston Enterprises. Security information is stored in a central location, known as the
RADIUS server.
Glossary