Terminology and abbreviations

Sony Ericsson Z500A manual Terminology and abbreviations

White Paper Z500a

3GPP

3rd Generation Partnership Project.

ACELP

Algebraic Code Excited Linear Prediction. A process used to predict filter coefficients used in speech synthesis.

AMR

Adaptive Multi Rate. Audio format for speech sounds.

API

Application Programming Interface.

Bearer

The method for accessing WAP from the phone, for example GSM Data (CSD) and SMS.

Bookmark

A URL and header/title stored in the phone.

Browsing session

The period from the first access of content until the termination of the connection.

Calling Line Identification (CLI)

Shows the number of the caller, or a picture assigned to the number of the caller in the mobile phone display. Not all numbers can be displayed. Network-dependent service.

Card

A single WML unit of navigation and user interface. May contain information to present to the user, instructions for gathering user input, etc.

Circuit Switched.

CSD

Circuit Switched Data.

Deck

A collection of WML cards.

DRM

Digital Rights Management; controlling copying and distribution of contents, with respect to intellectual property rights.

DTMF or Touch Tone

Dual Tone Multi-Frequency signal – codes sent as tone signals. Used for telephone banking, accessing an answering machine, etc.

Dual band

GSM 850/1800 or GSM 850/1900.

EDGE

EDGE stands for Enhanced Data rates for Global Evolution.

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. The EMS 3GPP standard also includes text formatting.

ETSI

European Telecommunications Standards Institute.

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 encod- ers translate Web content into compact encoded for- mats to reduce the size and number of packets travelling over the wireless data network.

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.

June 2004