230
Glossary
S675IP / USA-CAN eng / A31008-xxxx-xxxx-x-xxxx / glossary.fm / 14.05.2009
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GSM
Global System for Mobile Communication
Originally, a European standard for mobile networks. GSM can now be
described as a worldwide standard. In the USA and Japan national standards
are now more frequently supported than in the past.
H
Headset
Combination of microphone and headphone. A headset makes using the
speaker more convenient. There are headsets available that can be connected
to the handset by a cable.
HTTP Proxy
Server via which the
can process their Internet traffic.
Hub
Uses one
to connect several
. All
data sent to the hub by one network subscriber is forwarded to all network sub-
scribers.
See also:
I
IEEE
Institute of Electrical and Electronics Engineers
International body that defines standards in electronics and electro-technol-
ogy, concerned in particular with the standardization of LAN technology, trans-
mission protocols, data transfer rate and wiring.
Infrastructure network
Network with central structure: All
communicate via a
central
Instant messaging
Service that uses a client program to allow chatting in real time, i.e. to send
brief messages to other subscribers on the Internet.
Internet
Global
. A series of protocols have been defined for exchanging data,
known by the name TCP/IP.
Each
.
assigns a
.
Important services on the Internet include the World Wide Web (WWW), e-mail,
file transfer and discussion forums.
Internet Service Provider
Enables access to the Internet for a fee.
IP (Internet Protocol)
TCP/IP protocol on the
. IP is responsible for addressing subscribers in
a
using
and transfers data from the sender to the recip-
ient. IP determines the paths (routing) along which the data packets travel.
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