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Glossary
Gigaset SX682 WiMAX / engbt / A31008-N921-R101-5x-7619 / Glossary.fm / 11.8.09
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Network protocol
The network protocol is the standard via which different PCs exchange data in a net-
work. A connection can only be established between PCs in a network if they all use the
same protocol. The
network protocol is the most extensive network protocol,
which is also used for connections to the Internet. This must be set up on each PC from
which a network connection is to be established.
Port
Data is exchanged between two applications in a network across a port. The port
number addresses an application within a network component. The combination of
/port number uniquely identifies the recipient or sender of a data packet within
a network. Some applications (e.g. Internet services such as HTTP or FTP) work with
fixed port numbers; others are allocated a free port number whenever they need one.
Port forwarding
In port forwarding, the Gigaset SX682 WiMAX directs data packets from the Internet
that are addressed to a particular
to the corresponding port of the appropriate net-
work component. This enables servers within the local network to offer services on the
Internet without them needing a public IP address. See also:
Protocol
A protocol describes the agreements for communicating on a network. It contains rules
for opening, administering and closing a connection, as well as about data formats,
time frames and handling possible errors. Communications between two applications
require different protocols at various levels, e.g. the
protocols for the Internet.
Provider
A provider (Internet Service Provider) offers access to the Internet for a fee.
QoS
Quality of Service. QoS allows network traffic to be sorted according to priorities. This
makes it possible to grant
priority over other data traffic. This
is a precondition for problem-free calls.
RJ
R
egistered
J
ack. Standardised connection, also known as a modular jack.
Router
A router directs data packets from one local area network (
) to another via the fast-
est route. A router enables the connection between networks of different network tech-
nologies and this is performed on the basis of a common protocol. For example, it can
link a local network with WiMAX technology to the Internet.
RSSI
R
eceived
S
ignal
S
trength
I
ndication. Characteristic value for the signal strength of radio
connections, used by communication devices for the automatic selection of a suitable
channel.
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