Glossary - Sony Ericsson Wireless Manager 4.0 User Manual

Glossary

1G
Term for the first generation of analogue cellular networks
such as AMPS and TACS.
2G
Generic term for the second generation of cellular networks,
when digital technology was used. GSM is a 2G network.
2.5G
2G network that includes the addition of packet-based data
service. GSM networks with GPRS fall in to this category.
3G
Third generation of cellular networks, such as UMTS.
APN
Access Point Name. Used in GPRS to define services
to which the terminal can connect. For example, Internet,
WAP, MyCompany all represent typical APNs.
Bearer
Path over which data flows. Specifically in CSD the type
of telephony link from the GSM network to the server –
PSTN or ISDN.
bps
Bits per second – rate of data flow.
COM Port
Defines a serial/RS-232 port within the Windows
environment. May be physical (COM1 port on the rear
of the PC) or virtual (COM5 port communicating with
a PC card modem)
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.
CSD
Circuit Switched Data. CSD is a GSM service providing
a CS data connection at a rate of 9.6 or 14.4 kbps.
DUN
Dial-Up Networking.
E-GPRS
Enhanced GPRS. A GPRS network enhanced with
EDGE technology to provide greater speed and capacity.
EDGE
Enhanced Data rates for Global Evolution.
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.
ETSI
European Telecommunications Standards Institute.
www.etsi.org
GGSN
Gateway GPRS Support Node.
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 160 countries around the world.
GSM 850
Refers to a GSM system running in the 850MHz band.
Used in the USA and Canada.
GSM 900
GSM network operating in the 900MHz band.
Used mainly in Europe, Australia and South Africa.
Glossary 91