216
Glossary
Gigaset DE900 IP PRO / en / A31008-M2210-R101-5-7619 / glossary.fm / 17.09.2012
PRO Version 3, 30.05.2012
H
Headset
Combination of microphone and headphone. A headset makes using speaker mode more
convenient. Headsets that can be connected to the telephone via a cable are available.
HTTP proxy
Server via which network subscribers can process their Internet traffic.
Hub
Connects several network subscribers in one infrastructure network. All data sent to the
hub by one network subscriber is forwarded to all network subscribers.
See also: Gateway, Router.
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 network subscribers communicate via a central router.
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 WAN. A series of protocols known as TCP/IP have been defined for exchanging
data.
All network subscribers are identifiable by an IP address. DNS assigns a domain name to
the IP address.
Important services on the Internet include the World Wide Web (WWW), e-mail, file trans-
fer and discussion forums.
Internet service provider
Enables access to the Internet for a fee.
Internet telephony
Voice over IP.
IP (Internet Protocol)
TCP/IP protocol on the Internet. IP is responsible for the addressing of subscribers in a net-
work using IP addresses, and routes data from a sender to the recipient. IP determines the
paths (routing) along which the data packets travel.
There are standard IPv4 and IPv6 protocols; the essential difference is the structure of the
IP addresses.
