Abbreviations - Sony Ericsson T650 White Paper

Abbreviations

3GPP™
3rd Generation Partnership Project
AAC+
Advanced Audio Coding
AMR
Adaptive Multi Rate.
Audio format for speech sounds.
API
Application Programming Interface
CS
Circuit Switched
CSD
Circuit Switched Data
DRM
Digital Rights Management. Controlling copying
and distribution of contents, with respect to intel-
lectual property rights.
DTMF or Touch Tone
Dual Tone Multi-Frequency signal. Codes sent as
tone signals. Used for telephone banking, access-
ing an answering machine, etc.
e-GSM
Extended GSM. New frequencies specified by the
European Radio Communications Committee
(ERC) for GSM use when additional spectrum is
needed (network-dependent). It allows operators to
transmit and receive just outside GSM's core 900
frequency band. This extension provides increased
network capability.
eAAC+
Enhanced Advanced Audio Coding
EDR
Enhanced Data Rate.
EFR
Enhanced Full Rate, speech coding.
EMS
Enhanced Messaging Service. Allows the user to
add simple pixel pictures and animations, sounds
and melodies to a text message. The EMS 3GPP™
standard also includes text formatting.
ETSI
European Telecommunications Standards Institute.
FM
Frequency Modulation of the (radio) carrier wave.
FR
Full Rate, speech coding.
GIF
Graphics Interchange Format
GPRS
General Packet Radio Services
GSM
Global System for Mobile Communications. GSM
is the world's most widely used digital mobile
phone system, now operating in over 100 countries
around the world, particularly in Europe and Asia-
Pacific.
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White paper T650
June 2007