G.DMT
- An industry standard known as G.992.1, which refers to ADSL technology that uses
DMT modulation and does not require a splitter box to be installed at the user’s premises. This
technology supports upstream data rates of up to 8 megabits per second and downstream data
rates of up to 1.544 megabits per second.
G.Lite
- A “splitterless” ADSL technology that uses CAP or DMT modulation and supports
upstream data rates of up to 1.5 megabits per second and downstream data rates of up to 512
kilobits per second.
Gateway
- A network device — A dedicated network machine that connects two or more
separate networks that may use different protocols (such as ATM and TCP/IP) and translates the
protocols.
Hardware
- All the electric and mechanical parts and devices used in a computer or attached to
it.
HTML
- Hypertext Markup Language — The format used for writing documents to be viewed with
a Web browser. Items in the document can be text, images, and/or links to other HTML
documents, sites, and resources on the Internet.
Hub
- A device used for connecting nodes in a star topology, that is all the nodes are connected
to a central hub. A
passive
hub simply organizes the wiring, while an
active
hub besides
organizing the wiring, regenerates and retransmits the signals.
Interface
- The physical arrangement that supports the attachment of a device to a connector or
to another device.
Internet
- The world’s largest computer network, linking computers and networks all over the
world, that communicate via a standard TCP/IP protocol.
Internet Explorer
- A popular Web browser from Microsoft
Internet Protocol Address
- The address for a computer on a TCP/IP network. IP address refers
to a particular machine on the network. The format of an IP address is a 32-bit numeric address
written as four numbers separated by periods. Each number can be 0 to 255, for example,
11.160.10.240 is an IP address. Any machine connected to the Internet is assigned an IP
address.
ISDN
- Integrated Services Digital Network — A special dial-up telephone wire connection that
allows digital data transmission to co-exist with the telephone voice (analog) signals. ISDN
requires a special phone line from the Telephone Company. The basic rate ISDN (also called
2B+D) is a four wire (two pairs of twisted telephone cable) connection that provides two B
channels that transmits data at 64 kbps and third D channel that transmits data at 16 kbps.
ISP
- Internet Service Provider — An organization that provides Internet access to the computer
users.
LAN
- Local Area Network — A computer network that spans a relatively small area. Most LANs
are confined to an office, single building, or group of buildings.
Glossary
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