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Abbreviations
3GPP™
3rd Generation Partnership Project. Collaboration
between a number of telecommunications
standards bodies to specify 3G. 3GPP also
maintains and develops the specifications for
GSM.
AMR
Adaptive Multi-Rate. 3GPP standard for speech
coding (compression).
API
Application Programming Interface
CS
Circuit Switched. Connection from A to B which
has a fixed bandwidth and is maintained over a
period of time, for example a voice telephone call.
CS-1 to CS-4
Coding Scheme. Determines the data rate per
timeslot in GPRS.
CSS
Cascading Style Sheet
DM
Device Management. DM utilizes GPRS as bearer
(basic network connectivity needs to be in place) of
the provisioning data and allows the operator to
access the phone and check and set different
settings such as network connectivity (GPRS),
MMS and WAP.
DRM
Digital Rights Management; controlling copying
and distribution of content, with respect to
intellectual property rights.
DTMF
Dual Tone Multi Frequency. A method of coding
digits as a combination of two audible tones.
EFR
Enhanced Full Rate, speech coding.
EMS
Enhanced Messaging Service. An extension of
SMS enabling pictures, animations, sound and text
formatting to be added to text messages. 3GPP
has included EMS in the standards for SMS.
ETSI
European Telecommunications Standards Institute.
FR
Full Rate, speech coding.
GIF
Graphics Interchange Format. Format for storing
images which also supports animated images.
Highly compressed by limiting the colour palette to
16 or 256 colours.
GPRS
General Packet Radio Services
GSM
Global System for Mobile Communications. The
GSM system family includes GSM 850, GSM 900,
GSM 1800 and GSM 1900.
HR
Half Rate, speech coding
HSCSD
High Speed Circuit Switched Data
35
White paper
R300
May 2008
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