Nortel BayStack Instant Internet 100-S Using Manual page 324

324 Glossary
modem
(from modulation-demodulation) A device that transmits signals over
telephone lines. It converts binary electrical signals into acoustic signals, and
vice versa.
multilink PPP
An extension to the PPP protocol that enables you to group a set of links into
a bundle for more bandwidth. The links in the bundle can operate at different
speeds. Typical links can be ISDN B channels, dial-up connections, and
leased-lines.
name servers
A means of translating readable host computer names into actual IP addresses
so that you don't have to remember long numbers to access other computers
and destinations on the Internet. Also called DNS.
NAT
Network Address Translation. The modifying of IP addresses and/or port
numbers as they pass through a router or other such device. There are various
types and implementations of NAT, but Instant Internet provides a
"many-to-one NAT" whereby many internal IP addresses are represented as a
single IP address to the outside world. This method is also sometimes called
PAT, for Port Address Translation.
NDS
NetWare Directory Services. A global naming service used in NetWare 4.x.
NetBIOS
Network Basic Input/Output System. An interface and upper-level protocol
developed by IBM for use with a proprietary adapter for its PC network
product. NetBIOS provides a standard interface to the lower networking
layers. Essentially, the protocol provides higher-level programs with access
to the network.
NFAS
Not-Frame Alignment Signal.
NT1
Network Terminator 1.
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