elmeg DECT200 Multicell System / en / elmegDECT200M_en / Glossary.fm / 18.10.2013
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elmeg DECT200 Multicell System
bintec elmeg
Glossary
Fragmentation
Data packets that are too big are split into smaller packets (fragments) before they are
transferred. They are put together again when they reach the recipient (defragmented).
Full duplex
Data transmission mode in which data can be sent and received at the same time.
G
G.711 a law, G.711 μ law
Standard for a
.
G.711 delivers very good voice quality that corresponds to that in the ISDN network. As there
is little compression, the necessary bandwidth is around 64 kbit/s per voice connection, but
the delay caused by coding/decoding is only approx. 0.125 ms.
"a law" describes the European standard and "μ law" describes the North American/Japanese
equivalent.
G.722
Standard for a
.
G.722 is a
wideband
language codec with a bandwidth of 50 Hz to 7 kHz, a net transmission
rate of 64 kbit/s per voice connection and integrated speech pause recognition and comfort
noise generation (silence suppression).
G.722 delivers very good voice quality. A higher sampling rate provides clearer and better
voice quality than other codecs and enables a speech tone in High Definition Sound
Performance (HDSP).
G.726
Standard for a
.
G.726 delivers good voice quality. It is inferior to the quality with codec
G.711
.
Gateway
Connects two different
, e.g., a router as an Internet gateway.
For phone calls from
to the telephone network, a gateway has to be connected to the
IP network and the telephone network (gateway/VoIP provider). It forwards calls from VoIP
to the telephone network as required.
Gateway provider
See
.
Global IP address
See
GSM
Global System for Mobile Communication
Originally a European standard for mobile networks. GSM can now be described as a
worldwide standard. However, in the USA and Japan, national standards were previously
more frequently supported.
H
Handover
Possibility for a subscriber with a DECT handset to change from one cell to another during a
call or a data connection without interrupting this connection.
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