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using NAT/PAT/Masquerading. As the address
range used can only be viewed within the pri-
vate network, the same range can also be used
in other private networks. The unique nature of
an IP address required by the Internet protocol
is ensured by this restricted visibility.
Proxyserver
A proxy or proxy server is a service program for
computer networks that administers data trans-
fer. It makes data transfer faster, and can also
increase security by implementing access control
mechanisms. The transfer is conducted between
computers or programs in computer networks.
On the server side, the proxy acts as a client; on
the client side, it acts as a server.
Router
A router is a network component that links sev-
eral computer networks. The router analyses (on
the basis of layer 3 information) the network
packages of a protocol it receives and forwards
it to the intended destination network. Conven-
tional routers work on layer 3 of the application
layer. A router has an interface for every net-
work connected to it. When data is received, the
router determines the correct path to the destina-
tion and thereby the suitable interface via which
the data can be transferred. For this it uses a
locally available routing table that specifies via
which router connection a particular network
can be reached.
RoviGuide™
Electronic channel guide with various informa-
tion on the television programmes.
SCR(SingleChannelRouter)
Unrestricted single cable system.
If your antenna system is equipped with a single
cable multi-switch, the televisions which are con-
nected to this antenna system can receive televi-
sion channels independently from one another.
Security(WEP/WPA)
WEP (wired equivalent privacy) is the standard
encryption algorithm for WLAN. It controls both
access to the network as well as ensuring the
confidentiality and integrity of data. This proce-
dure is considered insecure nowadays. For this
reason, more recent WLAN installations should
use the more secure WPA encryption.
Symbolrate
This is the number of transmitted symbols in the
digital transmission technology per time unit
Timeshift
You can pause the programme you are watch-
ing. This is a useful function, for example if the
telephone rings while you are watching a film
and you do not want to miss anything.
The programme is saved in the time¬shift memo-
ry of the external data medium.
A maximum of 60 minutes of the current
programme can be recorded in the time shift
memory.
Transponder
A transponder receives data on a satellite and
then transmits it again. For example, an earth
station can transmit data signals for television
channels to a geostationary satellite, which
sends this back to earth. Any suitable satellite
antenna with visual contact to the satellite can
receive the signal.
UHDTV
Ultra High Definition Television (UHDTV or Ultra
HDTV) and Ultra High Definition Video (UHDV)
are a digital video format which includes two
picture resolutions (4K and 8K). Resolution:
3840 × 2160 (UHD-1) or 7680 × 4320 pixels
(UHD-2).
GLOSSARY
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