T300/T302

White Paper, August 2002

Contents

Purpose of this document

3

Product overview

4

Key functions and features

4

More in-phone functions

6

Multimedia in the T300/T302

8

MMS (Multimedia Messaging Service)

9

MMS objects

9

Benefits

10

MMS technical features

11

EMS (Enhanced Messaging Service)

13

EMS — more than just words

13

New possibilities with messaging

13

WAP services

16

Using WAP in the T300/T302

16

Bearer type characteristics

17

Gateway characteristics

17

Security using WAP

17

Configuration of WAP settings

18

Push services

19

Mobile Internet

19

Data connections

19

Mobile positioning

20

General Packet Radio Services

20

Using GPRS in the T300/T302

21

Modem and AT commands

23

GSM data communication

23

AT commands support

23

Infrared transceiver

25

Connection via infrared

25

In-phone functions and features

26

Network-dependent features

32

SIM application toolkit

33

SIM AT services supported by the T300/T302

33

User interaction with SIM AT

37

Terminology and abbreviations

39

Related information

43

Documents

43

Links

43

Trademarks and acknowledgements

43

Technical specifications

44

2

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Sony Ericsson T300 manual Contents