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.
Glossary
U8120
User Guide
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Glossary
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