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Glossary
Global IP address
See
IP
address.
GSM
Global System for Mobile Communication
Originally, a European standard for mobile
networks. GSM can now be described as a
worldwide standard. However, national
standards in the USA and Japan had been
more frequently supported up until now.
H
Headset
Combination of microphone and head-
phone. A headset makes using handsfree
mode more convenient. There are headsets
available that can be connected to the hand-
set by a cable.
HTTP proxy
Server via which the
can process their Internet traffic.
I
IEEE
Institute of Electrical and Electronics Engineers
International body that defines standards in
electronics and electrical engineering, con-
cerned in particular with the standardisation
of LAN technology, transmission protocols,
data transfer rate and wiring.
Infrastructure network
Network with central structure: All
subscribers
communicate via a central
Router.
Internet
Global WAN. A series of protocols have been
defined for exchanging data, known by the
name TCP/IP.
All
Network subscriber
their
IP
address.
DNS
name
to the
IP
address.
Important services on the Internet include
the World Wide Web (WWW), e-mail, file
transfer and discussion forums.
122
Network subscribers
Network
are identifiable via
assigns a
Domain
Internet Service Provider
Enables access to the Internet for a fee.
IP (Internet Protocol)
TCP/IP protocol on the Internet. IP is respon-
sible for addressing parties in a
using
IP addresses
and routes data from the
sender to the recipient. IP determines the
paths (routing) along which the data pack-
ets travel.
IP address
A unique address for a network component
within a network based on the TCP/IP proto-
cols (e.g., LAN, Internet). On the Internet,
domain names are usually assigned instead
of IP addresses.
DNS
ing IP address to the domain name.
The IP address has four parts (decimal num-
bers between 0 and 255) separated by full
stops (e.g., 230.94.233.2).
The IP address is made up of the network
number and the number of the
subscriber
(e.g., phone). Depending on the
Subnet
mask, the first one, two or three
parts make up the network number and the
rest of the IP address addresses the network
component. The network number of all the
components in any one network must be
identical.
IP addresses can be assigned automatically
with DHCP (dynamic IP addresses) or manu-
ally (static IP addresses).
See also: DHCP.
IP pool range
Range of IP addresses that the DHCP server
can use to assign dynamic IP addresses.
Network
assigns the correspond-
Network
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