Table of Contents
Advertisement
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.
93
Advertisement
Table of Contents
