Glossary

Bearer

Path over which data flows. Specifically in CSD the type of telephony link from the GSM network to the server - V 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.

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 900

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 GSM digital network working on a frequency of 1800 MHz. It is used in Europe and Asia-Pacific.

GSM 1900

Also known as PCS. Refers to a GSM system running in the 1900MHz band. Used in the USA and Canada, for instance.

HTML

HyperText Markup Language.

HTTP

HyperText Transfer Protocol.

ISDN

Integrated Services Digital Network. Can provide circuit- switched data connections in multiples of 64 kbps.

ISP

Internet Service Provider.

kbps

Kilobits per second - rate of data flow.

Glossary67