White Paper
M600
84
February 2006
CPHS Compliancy
The Common PCN Handset Specification (CPHS)
is an industry standard that defines terminal and
SIM functionality in addition to the standard GSM
specifications.
CS
Circuit Switched. Connection from A to B which
has a fixed bandwidth and is maintained over a
period of time, such as, a voice telephone call.
CS-1 to CS-4
Coding Scheme. Determines the data rate per
timeslot in GPRS.
CSD
Circuit Switched Data. CSD is a GSM service pro-
viding a CS data connection at a rate of 9.6 or 14.4
Kbps.
CSP
Customer Service Profile. on a SIM card will deter-
mine which menus on the phone are available to
the user.
CSS
Cascading Style Sheet. A feature of browsers.
DCIM
Digital Camera Images. The name of the root direc-
tory when storing images according to the Design
rule for Camera File system (DCF) standard.
DRM
Digital Rights Management; controlling copying
and distribution of contents, with respect to intel-
lectual property rights.
DTMF
Dual Tone Multi Frequency. A method of coding
digits as a combination of two audible tones.
DUN
Dial-Up Networking.
ECML
Electronic Commerce Modelling Language.
EFR
Enhanced Full Rate, speech coding. Provides bet-
ter speech quality than HR or FR.
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. 3GPP
has included EMS in the standards for SMS.
ETSI
European Telecommunications Standards Insti-
tute. www.etsi.org
FCC
Federal Communications Commission. US govern-
ment agency which regulates radio communica-
tions.
FR
Full Rate, speech coding.
GGSN
Gateway GPRS Support Node
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.
G-MIDI
General MIDI. Specifies a minimum level of per-
formance compatibility.
GPRS
General Packet Radio Services.
