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Glossary
2G
Second Generation wireless communication
system. 2G system supports low quality voice
and low-rate packet-data service. 2G refers to
GSM in European countries, and CDMA in
America.
3G
Third Generation wireless communication
system. 3G means next generation wireless
communication system developed based on the
second generation wireless communication
systems. 3G system supports real-time
communication service and high-rate
packet-data service. 3G refers to UMTS
developed based on GSM in European
countries,
Access point
Access point refers to a point through which
users can connect to the network so that the
users can use the network services.
AMR
Adaptive Multirate codec. A voice codec
developed by ETSI for GSM. AMR supports 8
coding rates (from 4.75 to 12.2Kbps) so as to
adaptively provide the quality of voice service in
various radio channel conditions.
Download
Download means transmitting files from one
computer system to another. Downloading
usually means transmitting files from a big
system to a small system.
IrDA (Infrared Data Association)
A standard defined by the IrDA consortium. It
specifies a way to wirelessly transfer data via
infrared radiation.
The IrDA specifications include standards for
both the physical devices and the protocols they
use to communicate with each other.
Summary of Contents for U8380
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