Sony Ericsson T20e User Manual

EN/LZT 108 4803 R1A

Mobile Phone

T20e

White Paper

Ericsson is the leading provider in the new telecoms world, with communications solutions that combine telecom and datacom technologies with freedom of mobility for the user. With more than 100,000 employees in 140 countries, Ericsson simplifies communications for its customers - network operators, service providers, enterprises and consumers - the world over.

First edition (March 2001) Publication number: EN/LZT 108 4803 R1A

This document is published by Ericsson Mobile Communications AB , without any warranty. Improvements and changes to this text necessitated by typographical errors, inaccuracies of current information or improvements to programs and/or equipment, may be made by Ericsson Mobile Communications AB at any time and without notice. Such changes will, however, be incorporated into new editions of this document. Any hard copies of this document or any locally stored copies of this documents are to be regarded as temporary reference copies only.

Contents

PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Purpose Of This Document . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . 6

WAP SERVICES . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Using WAP In The T20e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Bearer Type Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Gateway Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Connection-oriented And Connection-less WAP . . . . . . . . . . 9

Security Using WAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Over-The-Air Provisioning Of WAP Settings. . . . . . . . . . . . 10

Configuration Of WAP Settings . . . . . . . . . . . . . . . . . . . . . . 10

POWERFUL MESSAGING AND CHAT . . . . . . . . 11

Enhanced Messaging Service (EMS) . . . . . . . . . . . . . . . . . . 11

Mobile Chat Via SMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CONNECTIVITY . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Infrared Modem. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Cable Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

FUNCTIONS AND FEATURES . . . . . . . . . . . . . . 15

In-phone Functions And Features . . . . . . . . . . . . . . . . . . . . . 15

Network-Dependent Features . . . . . . . . . . . . . . . . . . . . . . . . 17

SIM APPLICATION TOOLKIT . . . . . . . . . . . . . . . 18

TERMINOLOGY AND ABBREVIATIONS . . . . . . 22

RELATED INFORMATION . . . . . . . . . . . . . . . . . . 25

APPENDIX: TECHNICAL SPECIFICATIONS . . . 26

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The Ericsson T20e White Paper is designed to give the reader a deeper technical understanding of how the T20e is designed, and of how it interacts with other media. This document will make it easier to integrate the T20e with the IT and communications solutions of a company or organization.

People who can benefit from this document include:

• Corporate buyers

• IT Professionals

• Software developers

• Support engineers

• Business decision-makers

The best place to find all the extras you need to support your phone and daily life is at the Ericsson Mobile Internet, http://mobileinternet.ericsson.com. Here you will find downloadable ring tones, games, news, information, and a host of exciting links to other sites.

More information, useful for product, service and application developers, is published on the Ericsson Mobility World. The site at http://www.ericsson.com/mobilityworld contains upto-date information about technologies, products and tools.

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The T20e is a Dual Band phone with a lithium battery; a phone of modern design and advanced technology.

• It has a Wireless Application Protocol 1.1 (WAP 1.1) compliant browser, allowing fast and reliable access to Internet services with security according to WTLS class 2. Both access types, GSM Data and SMS, are supported.

• The T20e supports Enhanced Messaging Service (EMS), an enhancement of the SMS standard. This makes it possible to include pictures and melodies in messages, and also to receive and edit new pictures and melodies on the phone.

• Mobile chat over SMS provides Internet-style chat functionality.

• With the built-in Picture Editor and Melody Composer, users can create and editing their own pictures and melodies on the phone.

• Support for Swatch® Internet Time, a new global time concept, without time zones.

• It supports SIM Application Toolkit (Online Services), which makes it possible for operators to provide new services to existing users over the air, including new menus and functions in the phone.

• Profiles feature; groups of settings preset to suit certain environments, such as ”In Car”, ”Meeting”, ”Home”.

• A full graphic display with an easy to navigate, user interface software.

• Numbered shortcuts make it possible to prepare settings into a favourite menu which the user can access quickly and easily.

• The Mobile Office DI 28 infrared modem (optional accessory) turns the T20e into a wireless modem for data communication, Internet connection and fax from the user’s PC or PDA.

• The RS-232 cable DRS-10 (optional accessory) can be used for connecting the T20e to a PC.

• A wide range of accessories compatible with the T20e are available from your local Ericsson sales representative.

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The typical WAP client is a small, portable device which is connected to a wireless network. This includes mobile phones, pagers, smart phones, PDAs and other small devices. In these devices, you have a limited user interface, low memory and computing power compared to desktop and laptop computers. The WAP browser in the T20e is compliant with WAP 1.1 including security according to WTLS class 2. It is designed for WML and cannot read ordinary HTML pages, but it is suitable for interaction with customer services, e. g. ticket reservation. It is also handy when you want to access text-based information, such as timetables, share prices and exchange rates and Internet banking and other interactive services.

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The built-in WAP browser gives the user portable, fast and secure access to a wide variety of services, with the possibility of personalized services. WAP in the T20e offers new opportunities to companies and service providers:

Bearer types The T20e accesses WAP over a standard GSM Data connection as well as

Connection-oriented Connection-less or connection-oriented WAP can be selected by the user.

Bandwidth efficiency One of the key advantages WAP has over text-based HTML pages on

over SMS. (Network-dependent services.)

Connection-oriented WAP provides browsing with a high reliability.

mobile devices, is the bandwidth efficiency for communication. This is due partly to the fact that the WAP application is communicated to the wireless devices in the form of binary encoded data.

Provide settings Using SMS messages, configuration settings can be sent over the air,

OTA, so that the user does not need to configure the WAP access settings manually.

Creating WAP services Creating a WAP service is no harder than creating an Intranet/Internet

service today since WML and WMLScript are based on well-known Internet technology. New market segments can be addressed by launching innovative mobile Value Added Services.

Using standard tools It is possible for the service creator to use standard tools like ASP or CGI

to generate content dynamically. You can utilize existing investments in databases etc. that are the basis of existing Internet services. Create a service once and make it accessible on a broad range of wireless networks.

Maintain customer base You can adapt existing Internet services to WAP. The actual binary

encoding can be handled by the WAP Gateway which makes it possible to create WAP applications using the text-based language WML and other tools. In fact, existing HTML-based applications on the Internet can be viewed in the WAP browser, if an automatic conversion is performed in the WAP Gateway.

Improve productivity Improve and simplify the communication flow within an organization by

making information available to mobile users. A company or organization can use a WAP gateway to provide a secure connection to the company network for their users.

The WAP profiles The T20e holds several WAP profiles, each with a group of network set-

tings and a home page. If you provide a corporate WAP service on your Intranet, it is useful to enter an Intranet WAP profile in user phones. The WAP profile holds network settings and user identification. The users switch easily between the corporate services and WAP services on the Internet, simply by switching WAP profile.

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The phone accesses WAP services over SMS or IP, where IP is provided over GSM Data. Typical differences which distinguish the bearer types are listed below this diagram.

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• Circuit connection of data call means that the phone is connected during the WAP session.

• Connection-oriented WAP (user option) uses error recovery services to provide high reliability.

• Comparably higher transmission speed than with SMS access.

• Pricing of GSM Data access can be compared to pricing of data calls in the network.

• GSM Data is suitable for Complex Pull services, Browsing and Data transfer.

• GSM Data is not suitable for Provisioning, Pager service.

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• SMS point-to-point is used and not SMS Cell Broadcast.

• The connection is maintained by the automatic exchange of ”messages” between the phone and the SMS Service Center.

• Comparably lower transmission speed than with GSM Data access.

• Pricing of SMS access can be compared to pricing of the normal SMS in the network.

• SMS is suitable for Messaging services, Info services, Provisioning.

• SMS is not suitable for Browsing or Data transfer.

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The WAP Gateway provides services in the company’s Intranet, a banking or stock trading service on the Internet, or access to other WAP applications on web addresses anywhere on the Internet. A Gateway is identified by an IP number or by a phone number, depending on access type.

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The T20e supports both connection-less and connection-oriented WAP over GSM Data. The user can select which method to use. In general, connection-oriented means that the connection between the WAP browser in the phone and the WAP Gateway is maintained in a session with error recovery services. This gives a high reliability with a reduced risk of errors in the transmission, and improves efficiency in WAP browsing.

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The T20e is based on the WAP 1.1 specifications where security functionality is specified with a technology called Wireless Transport Layer Security (WTLS).

The WAP protocols that handle the connection, its transport and its security are structured in protocol layers. The security is handled by the WTLS layer operating above the transport protocol layer. The WTLS layer is modular and there are WTLS classes that indicate which security level is supported by the application.

• WTLS class 1 specifies an encoding of the information.

• WTLS class 2 includes class 1 and in addition a server authentication, where server certificates are needed in the phone (access lock).

• WTLS class 3 includes class 2 and in addition a client certification, where client certificates are needed for the user (signature lock).

The T20e supports WTLS class 2, and it is equipped with a number of certificates. An access lock is needed when accessing certain WAP sites. The user is asked to enter it before a secure WAP connection is established.

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To simplify configuring WAP settings in a number of phones, all settings can be sent as an SMS message to each phone. This makes it easy for an operator, a service provider or a company to distribute settings for Internet/Intranet, and WAP, without having to configure each phone manually. This also makes it easy to upgrade the services provided to the users, without the need for users to perform any manual configuration.

• The OTA configuration message is distributed via SMS point-to-point

• The setup information is a binary encoded XML message, according to WBXML. To receive information about OTA specifications, please contact your local Ericsson representative for consumer products. A configurator that utilizes OTA provisioning can be tested on the Ericsson Mobile Internet

• The user is not alerted about new settings until the ongoing browsing session ends. Furthermore, settings are not changed during an ongoing browsing session

• The necessary user interaction is limited to receiving and accepting/rejecting the configuration message, and selecting which WAP profile to allocate the settings to

• Security can be handled using a keyword identifier displayed on the screen as a shared secret between the SMS sender and the receiver. It is important that the user has a way to verify that the configuration message is authentic

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To perform the WAP configuration of a single phone it is suggested to use the step-by-step WAP configurator provided on the Ericsson Mobile Internet. The configurator utilizes OTA provisioning, and it is available on http://mobileinternet.ericsson.com, no login required. The WAP settings can also be customized by the operator.

A manual configuration is made using the menu system in the phone. This is described in the User’s Guide.

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The T20e is capable of sending and receiving SMS messages, linked messages and it supports Enhanced Messaging Services (EMS). Also, mobile chat over SMS is supported.

• With the Short Message Service, a user can send text messages containing up to 160 characters to and from GSM mobile stations (up to 70 characters using Chinese text)

• With the linked SMS, the user can link several SMS messages together to create a longer message (network-dependent service)

• With EMS, the T20e lets the user insert pictures and melodies, or ring tones, in outgoing messages. Also, the phone will display pictures and play melodies included in incoming messages (network-dependent service)

• The T20e makes it possible to chat with a second party using SMS. The chat is a series of short messages and corresponding replies between the two parties, similar to chat services provided on the Internet.

The T20e also lets you save often-used text messages as templates. You can save up to ten templates consisting of up to twenty-five characters each in the phone's memory. The T20e also features an SMS counter allowing you to keep track of SMS messages that you have sent.

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Enhanced Messaging Service (EMS) is a powerful enhancement of the SMS standard specified by the 3rd Generation Partnership Project (3GPP). It is supported by the major network operators and mobile phone manufacturers. With it, mobile phone users can add life to SMS text messaging in the form of pictures and melodies. This gives the users new ways to express feelings, moods and personality in SMS messages.

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Add life to messages to and from the T20e by inserting melodies.

Users can express feelings and personality by inserting pictures in messages.

As well as messaging, users will enjoy collecting and swapping pictures and ring signals and other melodies, downloading them from the Internet or editing them directly on the phone. See related documents listed under “Documents” on page 25. EMS is a network-dependent service.

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