User's Manual

Prestige 645 ADSL Internet Access Router
Glossary E
networks.
DTE Originally, the DTE (data terminal equipment) was a dumb terminal or printer, but today it
is a computer, or a bridge or router that interconnects local area networks.
EMI ElectroMagnetic Interference. The interference by electromagnetic signals that can cause
reduced data integrity and increased error rates on transmission channels.
Encapsula-
tion
A process of putting information into packets. One layer encloses or encapsulates other
layers of the packet; for example, TCP/IP uses encapsulation. A whole separate packet can
even be encapsulated into another with a technique called IP tunneling.
Ethernet A very common method of networking computers in a LAN. There are a number of
adaptations to the IEEE 802.3 Ethernet standard, including adaptations with data rates of 10
Mbits/sec and 100 Mbits/sec over coaxial cable, twisted-pair cable, and fiber-optic cable.
The latest version of Ethernet, Gigabit Ethernet, has a data rate of 1 Gbit/sec.
FAQ (Frequently Asked Questions) -- FAQs are documents that list and answer the most common
questions on a particular subject.
FCC The FCC (Federal Communications Commission) is in charge of allocating the
electromagnetic spectrum and thus the bandwidth of various communication systems.
Flash
memory
The nonvolatile storage that can be electrically erased and reprogrammed so that data can be
stored, booted, and rewritten as necessary.
Gateway A gateway is a computer system or other device that acts as a translator between two systems
that do not use the same communication protocols, data formatting structures, languages,
and/or architecture.
Host Any computer on a network that is a repository for services available to other computers on
the network. It is quite common to have one host machine provide several services, such as
WWW and USENET.
IANA Internet Assigned Number Authority acts as the clearinghouse to assign and coordinate the
use of numerous Internet protocol parameters such as Internet addresses, domain names,
protocol numbers, and more. The IANA Web site is at http://www.isi.edu/iana.
ICMP Internet Control Message Protocol is a message control and error-reporting protocol between
a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams, but
the messages are processed by the TCP/IP software and are not directly apparent to the
application user.
internet (Lower case i) Any time you connect 2 or more networks together, you have an internet.