Sony Ericsson StreamMan P800 User Manual page 181

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CSD
Circuit Switched Data. CSD is a GSM service providing a CS
data connection at a rate of 9.6 or 14.4kbps.
CSS
Cascading Style Sheet. A feature of browsers.
DTMF
Dual Tone Multi Frequency. A method of coding digits as a
combination of two audible tones.
DUN
Dial-Up Networking. The dial-up networking capability in
Windows.
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
900MHz frequency band. This extension gives increased
network capability.
EMS
Enhanced Messaging Service. An extension of SMS enabling
pictures, animations, sound and text formatting to be added to
text messages.
Terms and definitions
FCC
Federal Communications Commission. US government agency
which regulates radio communications.
GIF
Graphics Interchange Format. Format for storing images which
also supports animated images. Highly compressed by limiting
the color palette to 16 or 256 colors. It is one of the two most
common file formats for graphic images on the World Wide
Web. The other is JPEG.
GPRS
General Packet Radio Services. A radio technology for GSM
networks that adds packet-switching protocols, shorter set-up
time for ISP connections, and offer the possibility to charge by
amount of data sent rather than connect time. GPRS promises to
support flexible data transmission rates typically up to 20 or 30
kbps (with a theoretical maximum of 171.2 kbps), as well as
continuous connection to the network.
GSM
Global System for Mobile Communications. GSM is the world's
most widely-used digital mobile phone system, now operating
in over 160 countries around the world.
GSM 900
The GSM system family includes GSM 900, GSM 1800 and
GSM 1900. GSM 900 refers to GSM working on a frequency of
900 MHz.
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