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White Paper V600
63 August 2005
Contacts
A memory in the mobile phone or SIM card where
phone numbers and information such as email
address, web address, picture and voice command
can be stored and accessed by name or position.
CS
Circuit Switched
CSD
Circuit Switched Data
CSS
Cascading Style Sheet
Deck
A collection of WML cards.
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.
Dual band
GSM 900/1800.
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 gives
increased network capability.
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.
ETSI
European Telecommunications Standards Institute.
FM
Frequency Modulation of the (radio) carrier wave.
FR
Full Rate, speech coding.
Gateway
A WAP Gateway typically includes the following
functions:
• A Protocol Gateway – the protocol gateway
translates requests from the WAP protocol
stack to the WWW protocol stack (HTTP and
TCP/IP).
• Content Encoders and Decoders – the content
encoders translate Web content into compact
encoded formats to reduce the size and number
of packets travelling over the wireless data net-
work.
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.
GSM system
The GSM system family includes GSM 900, GSM
1800 and GSM 1900. There are different phases of
roll-out for the GSM system and GSM phones are
either phase 1 or phase 2 compliant.
GSM 1800
Also known as DCS 1800 or PCN, this is a digital
network working on a frequency of 1800 MHz. It is
used in Europe and Asia-Pacific.
HR
Half Rate, speech coding.