Sony Ericsson T312, T310 User Manual
T310/T312
January 2003
Preface
Purpose of this document
The Sony Ericsson T310/T312 White Paper is
designed to give the reader a deeper technical
understanding of how the T310/T312 is designed,
and of how it interacts with other media. This document will make it easier to integrate the T310/T312
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
White Paper T310/T312
More information, useful for product, service and
application developers, is published at
http://www.SonyEricsson.com/mobilityworld/,
which contains up-to-date information about technologies, products and tools.
This White Paper is published by:
Sony Ericsson Mobile Communications AB, SE221 88 Lund, Sweden
Phone:+46 46 19 40 00
Fax: +46 46 19 41 00
www.SonyEricsson.com/
© Sony Ericsson Mobile Communications AB,
2002. All rights reserved. You are hereby granted
a license to download and/or print a copy of this
document.
Any rights not expressly granted herein are
reserved.
Revised edition (January 2003)
Publication number: EN/LZT 108 6224 R3A
This document is published by Sony 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
Sony Ericsson Mobile Communications AB at any
time and without notice. Such changes will,
however, be incorporated into new editions of this
document are to be regarded as temporary
reference copies only.
*All implied warranties, including without limitation
the implied warranties of merchantability or fitness
for a particular purpose, are excluded. In no event
shall Sony Ericsson or its licensors be liable for
incidental or consequential damages of any
nature, including but not limited to lost profits or
commercial lost, arising out of the use of the
information in this document.
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White Paper T310/T312
Contents
Purpose of this document .....................................................................................2
Product overview ......................................................................................................5
Key functions and features ....................................................................................5
More in-phone functions .......................................................................................8
Multimedia in the T310/T312 .....................................................................................9
MMS (Multimedia Messaging Service) ....................................................................10
MMS objects .......................................................................................................11
Benefits ................................................................................................................12
MMS technical features .......................................................................................12
EMS (Enhanced Messaging Service) ......................................................................14
EMS – more than just words ...............................................................................14
New possibilities with messaging ........................................................................14
WAP services ..........................................................................................................17
Using WAP in the T310/T312 ..............................................................................17
Bearer type characteristics ..................................................................................18
Gateway characteristics ......................................................................................18
Security using WAP .............................................................................................19
Configuration of WAP settings ............................................................................19
Push services .......................................................................................................20
Mobile Internet ........................................................................................................21
Data connections .................................................................................................21
General Packet Radio Services ...............................................................................21
Using GPRS in the T310/T312 .............................................................................23
Modem and AT commands .....................................................................................23
GSM data communication ...................................................................................23
AT commands support ........................................................................................24
Infrared transceiver .................................................................................................25
Connection via infrared ........................................................................................25
In-phone functions and features .............................................................................26
SIM application toolkit .............................................................................................33
SIM AT services supported by the T310/T312 ....................................................34
User interaction with SIM AT ...............................................................................37
Security and M-commerce technical data ..........................................................39
Terminology and abbreviations ...............................................................................40
Related information .................................................................................................43
Documents ..........................................................................................................43
Links ....................................................................................................................43
Trademarks and acknowledgements ..................................................................43
Technical specifications ..........................................................................................44
General technical data .........................................................................................45
Exterior description ..............................................................................................45
Ambient temperatures .........................................................................................47
Supported Man-Machine Interface (MMI) languages ..........................................47
Talk, standby and charging times .......................................................................48
Games .................................................................................................................48
Speech coding .....................................................................................................50
Cell broadcast service .........................................................................................50
Short Messaging Service .....................................................................................51
Enhanced Messaging Service .............................................................................53
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Multimedia Messaging Service ............................................................................55
Instant messaging/ Chat ......................................................................................58
Performance and technical characteristics .........................................................58
WAP browser technical data ...............................................................................59
WAP operator technical data ...............................................................................61
GPRS technical data ...........................................................................................66
Built-in GSM data modem technical data ...........................................................69
E-mail client technical data .................................................................................69
USSD technical data ...........................................................................................71
Image format technical data ................................................................................71
Images – downloading to phone .........................................................................71
Index ........................................................................................................................73
4 January 2003
Product overview
White Paper T310/T312
The Sony Ericsson T310/T312 is designed for
entertainment and imaging, with features that are
bursting with fun for consumers, and its a revenue
winner for network operators. The T310/T312
marketing focus is on mobile gaming, imaging and
messaging. It has all EMS and picture messaging
(text messaging with pictures and sounds), e-mail
and MMS (Multimedia messaging), and a snap-on
camera as a core accessory.
Key functions and features
Downloadable games
Gaming is already a very popular feature in Sony
Ericsson phones. Now the mobile Internet portal
offers the possibility of downloading games.
Network operators may also offer games download
to their customers as an added value offer. Users
can add new games and skill levels to further
enhance the entertainment value of Sony Ericsson
phones.
With a GPRS (General Packet Radio Services)
modem built in, the T310/T312 offers a fast and
satisfying mobile Internet experience. The T310/
T312 is a triple band 900/1800/1900 premium
product which is planned to be available Q1, 2003.
menu. The flexibility of the downloadable games
solution is dedicated to provide an enhanced
gaming experience.
The downloadable games can fully take advantage
of the phone´s interfaces, such as TCP/IP, SMS,
vibrator and backlights. The virtual machine
executes the downloading of games for the optimal
game experience. The user can download an
unlimited number of games as long as the file
system allows it, i e until the phone memory is full.
T310/T312 games download is made possible by a
true virtual machine. The Sony Ericsson portal for
downloading of games for the T310/T312 is
accessible with only one key press in the games
The downloading concept includes certification of
the games, which makes it possible to create a
revenue chain and favourable business
opportunities for network operators and content
providers. The virtual machine uses technology for
the highest level of security.
The software development kits are available via
www.mophun.com
Polyphonic ring signals
Pleasing to the ear, polyphonic ring signals can
play up to 32 tones simultaneously making a more
musical sound. The word “polyphony” means
playing with several tones at the same time. Almost
all music that we listen to consists of polyphonic
melodies. Up to now, the majority of the GSM
mobile phones doesn’t support polyphonic sounds
and ring signals.
T310/T312 users can share ring signals, and
download them from the Web.
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Early Ericsson mobile phones supported a
proprietary non-polyphonic format called eMelody.
Due to the musical limitations of eMelody, and as it
became popular to create, send and download ring
melodies, Ericsson and Sony Ericsson, together
with other manufacturers created the more
advanced non-polyphonic sound format - iMelody.
The development from the iMelody format to the
MIDI format means a revolution to the sound
quality. The MIDI files are small, and perfect for
mobile devices, which has limited storage capacity.
MIDI - Musical Instrument Digital Interface - is a
specification for a communications protocol
principally used to control electronic musical
instruments. MIDI is today a well known standard
used by musicians, composers, arrangers and so
forth.
A MIDI signal or file does not contain any music. It
contains text information as binary data about
what, when and how an instrument/melody is
played. When this data reaches a synthesizer, the
synthesizer translates it into music from the
following attributes:
The pictures are stored in the picture browser in the
phone. From here, the user can select view,
thumbnail or full view, as well as keep track of the
number and size of the pictures stored in the
phone.
Digital Rights Managements
Digital Rights Management (DRM) is a technology
that enables secure distribution, promotion and
sale of Digital Media.
T310 includes implementation of EMS ODI (Object
distribution Indicator) and MMS limited forwarding
(Sony Ericsson proprietary forward lock for MMS
content).
When downloading via WAP, the T310 includes
support for OMA (Open Mobile Alliance) defined
DRM solution forward lock, meaning that Content
is packaged in a DRM package and delivered to
the device. The support of forward lock means that
it is not possible to forward the downloaded
content to any other device. Forward lock is useful
for all types of content that the provider wants to
charge for.
• What instrument is to be selected and played by
the synthesizer.
• How a melody is played.
• When connected to an amplifier with speakers,
the sound becomes audible.
Please visit www.midi.org for more information.
Imaging
With a digital camera attached to your T310/T312,
you can take, view, store and send high-quality
pictures over the air to another mobile phone, as
MMS messages, or you can send them to an e-mail
address or Web photo album. Downloading images
from the Web is another alternative. Thousands of
on-line image collections already exist on the Web
and many sites are already gearing up to include
images for use in mobile phones.
There are various ways to incorporate images and
other multimedia into your communication. You can
attach pictures to people listed in your phone book
and have pictures or icons of the caller identifying
them in your display.
Related information such as the “OMA-Download-
DRM, v1.0” specification can be found at http://
www.openmobilealliance.org/documents.html.
Multimedia Messaging
Reacting to the enormous popularity of mobile
phone messaging, Sony Ericsson has incorporated
the latest messaging standard into the T310/T312,
along with a colour display for an enhanced
imaging experience.
Say it in words, say it with pictures, animate it, add
sound. Multimedia birthday and holiday greetings
are great fun to put together using the T310/T312.
On vacation, use your mobile phone and
accessories to send a digital postcard with stylized
text, digital pictures of where you are, and
authentic sound clips to friends and family back
home. If, when shopping, you find something a
friend might like, you can instantly send a digital
picture of the item and ask if they like it.
With MMS, the subscription applications get more
interesting, for example stock information, movie
trailers and weather reports.
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Full graphic 256 colour display
The large colour display of the T310/T312
enhances viewing, facilitating high-quality
multimedia messaging and personalized imaging.
The standby display looks like the desktop in a
computer, with the menus presented as icons.
Joystick navigation on the keypad
The T310/T312 has an easy-to-use 5-directional
joystick function. Using finger or thumb, you can
easily navigate the new T310/T312 menu system.
When you arrive at the required function in a menu,
instead of pressing Yes, just gently press the
joystick and the feature is activated. The T310/
T312 MMI is adapted for easy joystick navigation.
Browser supporting WAP 2.0 - XHTML™
The T310/T312 supports the WAP 1.2.1 browser
and protocol stack as well as the WAP 2.0 browser.
The browser supports the markup languages of
WAP 2.0 – XHTML Mobile and XHTML Basic.
These two subsets of the Web standard XHTML are
supported by all major Web browsers. An XHTML
page can be viewed in both the WAP browser and
in any standard Web browser. All of the basic
XHTML features are supported, including text,
images, links, check boxes, radio buttons, text
areas, headings, horizontal rules and lists.
GPRS
GPRS uses Internet-style packet based
technology. It uses the radio link only for the
duration of time that it transfers data. GPRS offers
the user the speed needed for satisfactory mobile
Internet usability. The T310/T312 supports GPRS
3+1.
Design
The basic form gives a strong and sophisticated
product image by using a simple cylindrical shape
with relaxed, smooth surfaces and slightly curved
sides featuring concave grips. The bezel
surrounding the display wraps across the front
surface creating an innovative wide-screen design
element. The split-line speaker outlet between the
front and the bezel enables a completely new look
reducing unnecessary ornamental detailing. The
navigation keys are clustered into one design detail
around the joystick to ensure best possible
ergonomics. Below the keypad is a small
expansion of the surface, featuring a separate
detail, which enhances the grip while pushing the
lower keys. The front cover is not exchangable and
the battery cover slides into place. There is also a
loophole for a carrying strap accessory.
Customization
The T310 has a separate co-brand inlay part for
more flexible customization. The co-brand inlay is
snapped on to the front, in the area below the
keypad, and is mounted on the phone as the last
step in our production chain. This makes it possible
for a shorter lead time when printing operator
details on customized phones. Furthermore, the
co-brand print is covered with a top coat for
greater wear resistance.
In addition to XHTML, the browser supports WML.
The user can navigate between WML and XHTML
pages.
T310/T312 also supports cookies, often used by
Web sites to store site-specific information in the
browser between visits to the site. Cookies are
often used by e-commerce sites (shopping carts
and wish lists), and to save the user from entering
the same information more than once.
Content
Content such as games, pictures and sounds can
vary depending on the customization requirements.
This document describes the general content plan
for T310. Content can also be found at
http://wap.SonyEricsson.com.
Direct download links
The direct download link is a function designed to
encourage downloading of content via WAP to
enrich the user experience. Furthermore the
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download link also tries to influence the user to use
WAP-based services and get used to using data
oriented services on the network.
The Fun&Games menu includes a link called
Download which directs the user to the Sony
Ericsson WAP site where there are links to Games,
Pictures, Themes and Sounds.
More in-phone functions
E-mail
The T310/T312 has a fully functional e-mail client.
With inbox, outbox, save draft and reply options,
you have all the functions you need for effective email communication in a small and powerful mobile
phone. Constantly connected to a POP3, SMTP or
IMAP4 e-mail server anywhere on the Internet, your
T310/T312 stores messages (without attachments)
dynamically, depending on available memory, and
updates your inbox automatically and over the air.
Check your e-mail anywhere. Reply to e-mail on
the move. Friends, family and business contacts
know that when they send you e-mail, you receive
it and can read it and act on it immediately. You can
include pictures in outgoing e-mails, but not
receive attachments. Hyperlinks in e-mails are
supported.
EMS (Enhanced Messaging Service)
You can send text, pictures and sounds in easy-tocreate and fun messages. EMS has been adopted
by several leading mobile phone manufacturers,
making it possible for T310/T312 users to send
enhanced text messages to users of other makes
of mobile phones. EMS makes it possible for the
user to use text formatting (style, size, alignment
and paragraphs) in a text message. At purchase
there are several pre-defined images and
animations in the T310/T312.
Predictive Text Input Software
Text messaging with your T310/T312 is made
easier than ever with the introduction of predictive
text input software. Instead of having to press keys
several times for a letter, software in your T310/
T312 chooses from a dictionary of words and
phrases and anticipates what word or phrase you
The presence of the link and the URL of the link can
be customized according to customer choice. It is
also possible for operators to include an additional
link with their own URL and generic name for all
languages.
are writing, giving your mobile phone keyboard
ease of use comparable to that of a full-size
keyboard.
Screen saver and sleep mode
The screen saver is activated when the phone has
been idle for 26 seconds. There is a pre-defined
screen saver at the purchase of the phone, but the
user can choose his/her own image/animation as a
screen saver. After a short period of time the screen
saver changes to sleep mode, to save power.
Memory management
Most applications in the T310/T312 share the same
memory, allowing for efficient memory usage.
When the memory runs low, the user gets
information about the current memory situation,
where each application’s usage is displayed. In the
memory manager menu, the user can delete
downloaded content from applications, in order to
set memory free. The memory available for the user
is approximately 340 KB (Kilobytes).
Mobile chat
Mobile chat makes text messaging easier, since a
chat-session opens up immediately when a text
message is received from a phone. Because the
user stays connected during the session, the
messages open up automatically. All previous
messages from both persons are visible on screen,
each writer being distinguished by a nickname.
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Picture phone book
The phone book in the T310/T312 lets the user
assign a picture or a personal ring signal to a
certain phone number. When the user gets a call
from this person, the picture (instead of the
number) is shown in the display.
Events
The T310/T312 Events feature keeps track of
important meetings that you need to attend, phone
calls that you need to make or tasks that you need
to do. 20 items can be saved. You can also choose
to add, reschedule, edit, send or delete events.
iMelody and Melody Composer
The user can play, compose, edit and send
melodies within the improved Melody Composer.
The composer has an improved graphical user
interface to simplify melody handling. All new and
edited melodies are stored in the iMelody format.
Sound browser
From the Sound browser function, the user can
handle all sounds (for example MIDI, eMelodies,
iMelodies and sound recordings) stored in the
phone. The user can play, send and view
information on the sounds. Ring signals (MIDI,
eMelody, iMelody, vMel) can be downloaded via
WAP or exchanged via SMS (iMelodies), infrared
and MMS (MIDI, iMelodies). Sound recordings can
be exchanged via infrared and MMS. The
maximum number of sounds is limited only by the
amount of free memory.
Please also see information about the MIDI format
under “Polyphonic ring signals” on page 5
Camera application
The camera application in the T310/T312 supports
the Communicam™ MCA-20 and the
Communicam™ MCA-25. The user can browse,
view, send and store pictures in the phone. It is
also possible to set different picture sizes.
Themes
With themes, the user can change the appearance
of the display, for example, the text, the
background colours and the background picture.
The phone comes with a number of pre-defined
themes. It is possible to download and exchange
additional themes. The maximum number of
themes is limited only by the amount of free
memory.
Multimedia in the T310/T312
The T310/T312 is a multimedia phone. The colour
display together with the audio functionality gives
the user several multimedia possibilities. For
example, sounds can be recorded and stored. By
using themes, it is easy to change the appearance
of the display. Pictures, audio, animations and
themes can be transmitted via MMS.
Graphics
Graphics (tables, charts, diagrams and layouts) has
a major impact on the way we work. The T310/
T312 supports JPG (max 640x480), GIF (max
160x120), WBMP (max 320x320) and animated
GIFs. With MMS, the user can personalize the
appearance of the display – for example the text,
the background colours and the background
picture.
Audio
The user of the T310/T312 can use the mobile
phone as a sound recorder. With the sound
recorder function, it is easy to make a voice
recording, for example a personal rendition of
“Happy Birthday”. The audio function in the T310/
T312 also allows downloading of sounds and
melodies.
Pictures
With a digital camera attached to your T310/T312,
you can take, view and store pictures. It is also
possible to download colour pictures to your T310/
T312. The pictures are stored in the picture
browser in the phone. From here, the user can
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F
m
select view, thumbnail or full view, as well as keep
track of the number and size of the pictures stored
in the phone.
The pictures stored in your T310/T312 can be used
for creating your own digital postcards. This is
easily done by adding text to the pictures and
sending them via MMS.
Themes
With themes, the user can change the appearance
of the display, for example the text, the background
colours and the background picture. The phone
comes with a number of pre-defined themes, and it
is possible to download additional themes. The
maximum number of themes is limited only by the
amount of memory.
Image formats
For information on Image formats and downloading
of images, see “Image format technical data” on
page 71 and “Images – downloading to phone” on
page 71.
MMS (Multimedia Messaging Service)
One of the key features in the T310/T312 is the
Multimedia Messaging Service (MMS), expected to
become the preferred messaging method of mobile
terminal users, since there are virtually no limits to
the content of an MMS transmission. An MMS
message from the T310/T312 can contain text,
graphics, animations, images, audio clips and ring
melodies. For more detailed information, see
“Multimedia Messaging Service” on page 55. For
third-part developers’ information, please visit
www.SonyEricsson.com/mobilityworld/ and look
for the MMS Developers’ guidelines.
on all terminals, making total content exchange
second nature. From utility to sheer fun, it offers
benefits at every level and to every kind of user.
Defined and specified by 3GPP as a standard for
third generation implementation, MMS completes
the potential of messaging. Sending digital
postcards and PowerPoint-style presentations is
expected to be among the most popular user
applications of MMS. Eagerly awaited by young
users in particular, MMS is projected to fuel the
growth of related market segments by as much as
forty percent.
Using the Wireless Application Protocol (WAP) as
bearer technology and powered by the high-speed
transmission technologies EDGE, GPRS and UMTS
(W-CDMA), Multimedia Messaging allows users to
send and receive messages that look like
PowerPoint-style presentations. The messages
may include any combination of text, graphics,
photographic images, speech and music clips.
MMS will serve as the default mode of messaging
igure 1. An MMS message can contain images,
usic, audio and graphics.
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MMS objects
White Paper T310/T312
Although MMS is a direct descendant of SMS, the
difference in content is dramatic. The size of an
average SMS message is about 140 bytes, while
the maximum size of an MMS message is limited
only by the memory. That is why the key word to
describe MMS content is rich. Complete with
words, sounds and images, MMS content is
endowed with the user’s ideas, feelings and
personality.
An MMS message can contain one or more of the
following:
Te xt
As with SMS and EMS, an MMS message can
consist of normal text. The length of the text is
unlimited, and it is possible to format the text. The
main difference between an EMS and MMS
message is that in an MMS message, text can be
accompanied not only by simple pixel images or
melodies but by photographic images, graphics,
audio clips and in the future, video sequences.
Te mp l at e s
The T310/T312 comes with a number of MMS predefined templates, for example templates for
birthday cards, meeting requests etc.
Audio
MMS provides the ability to send and receive full
sound (iMelody, MIDI and AMR) messages. Not
only can users share a favourite song or ring signal
with a friend, they can also use the mobile phone to
record sound and send it along with a message.
Because sound includes speech as well as music,
this extra dimension of an MMS message makes
for enhanced immediacy of expression and
communication. Rather than sending a
downloaded birthday jingle in EMS, for example, a
user can send a clip of his or her own personal
rendition of “Happy Birthday”.
Mobile picture transmission also offers inestimable
utility in business applications, from sending onsite pictures of a construction project to capturing
and storing an interesting design concept for later
review. Editing a picture by adding text allows
users to create their own electronic postcards, an
application that is expected to substantially cut into
the traditional postcard-sending market.
Themes (downloaded or pre-defined) can be
exchanged via MMS.
SMIL presentations
SMIL stands for Synchronized Multimedia
Integration Language and is pronounced “smile”.
SMIL in the T310/T312 allows the user to the create
and transmit PowerPoint-style presentations on the
mobile device. SMIL is an advanced XML-based
protocol, and Sony Ericsson MMS supports a
subset of this protocol. Using a simple media
editor, users can incorporate audio and animated
GIFs along with still images, animations and text to
assemble full multimedia presentations.
The idea of SMIL is to allow the user to customize
the page timing in Powerpoint-style presentations.
The user can decide in which order the image and
text will be displayed, as well as for how long the
images and text lines are to be shown in the
display
PIM communication with MMS
With MMS in the T310/T312, it is easy to send and
receive business cards (vCard) and events.
Pictures and themes
By using either a digital camera attached to the
T310/T312 with a snap-on camera accessory,
users can take a snapshot and immediately send it
to a recipient. The ability to send pictures is one of
the most exciting attributes of MMS, as it allows
users to share meaningful moments with friends,
family and colleagues.
Figure 2. Example of the creation of an MMS message.
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Benefits
White Paper T310/T312
Essentially enabling the mobile terminal to serve as
image processor and conveyor, Multimedia
Messaging accommodates the exchange of
important visual information as readily as it
facilitates fun. Business and leisure usage of MMS
will be dynamically merged, resulting in enhanced
personal efficiency for users and increased network
activity for operators. In short, MMS affords total
usage for total communication
Because MMS uses WAP as its bearer technology
and is being standardized by 3GPP, it has wide
industry support and offers full inter operability,
MMS technical features
The MMS standard, just like SMS, offers store-andforward transmission (instant delivery) of
messages, rather than a mailbox-type model. MMS
is a person-to-person communications solution,
meaning that the user gets the message directly
into the mobile. He or she doesn’t have to call the
server to get the message downloaded to the
mobile. Unlike SMS, the MMS standard uses WAP
as its bearer protocol. MMS will take advantage of
the high speed data transport technologies EDGE
and GPRS and support a variety of image, video
and audio formats to facilitate a complete
communication experience.
which is a major benefit to service providers and
end users. Ease-of-use resulting from both the
gradual steps of the messaging evolution and the
continuity of user experience gained from inter
operability is assured.
The MMS server, through which MMS messages
are sent, supports flexible addressing (to both
normal phone numbers (MSISDN) and e-mail
accounts), which makes user interface more
friendly and allows greater control for operators.
The MMS server, moreover, is responsible for the
instant delivery feature of MMS.
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Architecture
The MMS Centre (MMS-C) is comprised of the
MMS Server, the MMS Proxy-Relay and the MMS
Store. The MMS Centre is the central element of
the MMS network architecture, providing storage
and operational support, enabling instant delivery
of multimedia messages from terminal-to-terminal
and terminal-to-e-mail, and supporting flexible
addressing. The centre’s MMS Proxy-Relay
interacts with the application being run on the
MMS-enabled terminal to provide various
messaging services. WAP is used as bearer of an
MMS message between the MMS-C and the MMS
client (application). The WAP Gateway is used for
delivery and retrieval of messages.
Figure 3. The architecture of MMS
Message conversion
The MMS-C is able to perform limited message
conversion - for example, from MMS to SMS - so
that processing and air time is not wasted in
sending messages to mobile terminals that do not
have adequate capability to receive them. It also
handles service aspects such as store and forward,
guaranteed delivery, subscriber preferences,
operator constraints, and billing information. The
MMS-C also vouches for high quality messaging,
e.g. by format conversion. This means that the
MMS-C recognizes which formats are supported in
the mobile phone, and adapts the MMS messages
to these formats.
OTA configuration
Users can easily get MMS into their phone. MMS
supports OTA, meaning that the user does not have
to configure the settings manually.
The configuration is done by the operator.
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EMS (Enhanced Messaging Service)
Enhanced Messaging Service (EMS) adds new
powerful functionality to the well-known SMS
standard. With it, mobile phone users can add life
to SMS text messaging in the form of pictures,
animations, sound and formatted text. This gives
the users new ways to express feelings, moods
and personality in SMS messages. As well as
messaging, users will enjoy collecting and
EMS – more than just words
Sounds and melodies
EMS gives the user the ability to send and receive
sounds. These can be pre-defined sounds, such as
“Chime high” and “Notify”, or melodies (ring
signals in the phone), downloaded from the
Internet, received in SMS messages or composed
by the user on the phone keypad or a PC.
Several sounds and melodies can be inserted in
one message, and they can be combined with
pictures.
Pictures, animations and formatted text
Phones supporting EMS include a set of predefined pictures for inserting in SMS messages.
New pictures and animations are downloaded from
swapping pictures and ring signals and other
melodies, downloading them from the Internet or
editing them directly on the phone.
EMS uses existing SMS infrastructure and industry
standards, keeping investments to a minimum for
operators and providing a familiar user interface
and compatibility with existing phones and with
other manufacturers.
the Internet or received in SMS messages. Several
pictures can be inserted in one message, and they
can be combined with sounds and melodies. The
users can format text in messages with different
styles and sizes.
Concatenated messages
A part of the EMS standard is the support for
concatenated messages, which means that the
phone is able to automatically combine several
messages both when creating and receiving EMS.
This is useful to be able to build and display
messages with rich content since the amount of
information in each SMS is limited by the SMS
standards.
New possibilities with messaging
The EMS standard is now a part of the SMS
standard and supported by the major network
operators and mobile phone manufacturers. This
universal approach enables a fast penetration and
development of new services and applications
within messaging.
Creativity explosion
Users will be inspired to create and swap their own
melodies and pictures. But more importantly,
professional content creators and providers are
already preparing to offer imaginative and creative
contents for use with EMS. Based on
subscriptions, fees or ads, network operators will
be able to provide wide ranges of ring signals,
operator logos and corporate icons, as well as
personal and mood-related pictures and melodies.
Movie, music and game companies can promote
new products and events with designer melodies,
animations and pictures.
14 January 2003
White Paper T310/T312
Huge business potential
Network operators can now enhance their services
and attract more customers by offering pictures,
animations, ring signals and melodies for download
at their portals. Operators can charge more per
EMS message since it contains more data. Thereby
EMS adds more value to the operators and to the
end users.
Increase SMS revenue
EMS uses the same basic network support as
ordinary SMS, and with the same familiar user
interface. From an operator's point of view, SMS is
low tech because minimal investment is needed to
provide an effective EMS service to subscribers
and little maintenance is required. EMS will create
additional revenue for service providers and
network operators by increasing SMS traffic.
Compatible with SMS standards
Users will find EMS as easy to use as SMS. At the
moment 15 billion SMS messages are sent every
month worldwide. Roughly 80% of this traffic is
user-to-user, i.e. mobile phone users sending short
messages to each other using the keypad of the
phone to enter text. The remaining 20% is shared
by downloads and notifications of different kinds.
The Enhanced Messaging Service (EMS) was first
submitted to the standards committees by
Ericsson. Ericsson presented the outline structure
of EMS to the relevant ETSI/3GPP committees. The
major mobile phone manufacturers and most
operators are actively contributing to the 3GPP
standards. Hence the EMS standards have evolved
and are now stable and complete as part of the 3rd
Generation Partnership Project (3GPP) technical
specification.
Some companies in the mobile phone industry
have developed their own messaging technologies,
which only work with their own phone models.
Network operators are in favour of EMS because it
is universal – many of the major mobile phone
manufacturers are constructively improving and
developing the EMS standards even further for
implementation in their products.
Examples of EMS contents and
applications
A wide range of contents, applications and
services may be developed. Below is a list of
examples and areas where messaging can be
enhanced with EMS.
User-to-user message
Messages usually originating from the keypad of a
mobile phone can include pictures, melodies,
formatted text with EMS.
Voice and e-mail notifications
Notifying mobile phone users that they have new
voice or fax mail messages waiting - including
icons or melodies with EMS.
Unified messaging
The user typically receives a short message
notifying them that they have a new message in
their unified messaging box, with icons or
formatted text further enhancing the message.
Internet e-mail alerts
An Internet e-mail alert is provided in the form of a
short message that typically details the sender of
the e-mail, the subject field and first few words of
the e-mail message, and in this case formatted text
is excellent to identify message elements.
An EMS message can be sent to a mobile phone
that does not support EMS, or only supports part
of EMS. All the EMS elements i.e. text formatting,
pictures, animations and sounds are located in the
message header. The EMS contents will be ignored
by a receiving phone that does not support the
standard. Only the text message will be displayed
to the receiver. This is true consumer-friendly
standardization. EMS is compatible to SMS across
most of the range of mobile phones from the oldest
to the newest.
Ring signals
Downloading ring signals from the Internet.
News & commercials
World news illustrated, sports scores and news
headlines, finance and stock market news with
diagrams and tickers, commercial product
promotions, weather reports with maps, tunes from
TV commercials as ring signals.
Info & entertainment
Ring signals, e-greetings, football club logo, jokeof-the-day illustrated by pictures or sound,
horoscopes, movie related animation or theme
15 January 2003
White Paper T310/T312
song, TV show promotions, music artist
promotions, lottery results, food and drinks
pictures and recipes, mood-related pictures.
Corporate
Flight schedules, pre installed corporate logos,
map snippets and travel info, company branded
icons and ring signals, corporate e-mail
notifications, affinity programmes where
companies notify customers of product updates
etc, banks notifying customers about new services
and interest rates, call centres providing answers to
questions about a product, vehicle positioning
combining EMS with Global Positioning System
(GPS) position information, job dispatch with
delivery addresses for sales or courier package
delivery, using EMS in a retail environment for
credit card authorization, remote monitoring of
machines for service and maintenance purposes.
Using Web, WAP And SMS for download
Already today services exist on the Internet where
users can create melodies, and view icons and
pictures, subscribe to entertainment and
informations services. These may develop further
in the future to support access via PC over the
Internet, from the phone using WAP and even with
an SMS request interface.
The diagram shows a model over the possibilities with Enhanced Messaging Service:
- When the Operator/Service provider enables EMS in the network, users will enjoy adding life to
messages with sounds, melodies, pictures and formatted text.
- New ranges of Content/Application aggregators on the operator network or the Internet can provide EMS contents and services to the users over SMS.
- Content Creators/providers can see a new demand for creative contents. Also, promotional activities from movie companies, record labels etc can provide ring signals, movie snapshots etc.
The added value in SMS messaging will create new revenue which can be shared between the network operators, the application aggregators and the content providers.
16 January 2003
WAP services
White Paper T310/T312
The T310/T312 supports the WAP 1.2.1 browser
and protocol stack as well as the WAP 2.0 browser.
The T310/T312 has a WAP browser, supporting
WAP 2.0 (WML 1.3). WAP 2.0 optimizes usage of
higher bandwidths and packet-based connections
of wireless networks.
The typical WAP client is a small, portable device
connected to a wireless network. This includes
mobile phones, pagers, smart phones, PDAs and
other small devices. Of course, compared to
Using WAP in the T310/T312
The built-in WAP browser in the T310/T312 gives
the user portable, fast and secure access to a wide
variety of services, including personalized services,
with new opportunities for business, individuals
and service providers:
Push services
Businesses and service providers can “push”
content or service indications to work groups and/
or customers. Examples of pushed content would
be mail alerts, messaging, news, stock quotes,
contacts, meeting requests, etc.
Support of XHTML
The WAP browser supports the markup languages
of WAP 2.0 – XHTML Mobile and XHTML Basic.
These two subsets of the Web standard XHTML are
supported by all major Web browsers. An XHTML
page can be viewed in both the WAP browser and
in any standard Web browser. All of the basic
XHTML features are supported, including text,
images, links, check boxes, radio buttons, text
areas, headings, horizontal rules and lists.
Support for cookies
This version of WAP has support for cookies (client
based), an application used by Web sites to store
site-specific information in the browser between
visits to the site. Cookies give the site owner a
possibility to see when a person has visited their
site. They also save the user from having to enter
desktop and laptop computers, these devices are
limited by user interface, low memory and low
computing power.
The WAP browser in the T310/T312 is compliant
with WAP 2.0 and includes WTLS class 3 as well as
mechanisms for digital signatures. It supports WML
and XHTML. The WAP browser in the T310/T312 is
also designed to access information such as
timetables, share prices, exchange rates, Internet
banking and other interactive services. For more
details, see “WAP browser technical data” on
page 59.
the same information (e.g. the password or user ID)
more than once. Cookies are often used by ecommerce sites (shopping carts and wish lists).
Sending bookmarks
WAP 2.0 enables the sending of bookmarks via
infrared as well as via SMS.
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. WAP settings may also be customized by
the operator. For more information, see “WAP
operator technical data” on page 61.
Adapt to phone type
The User Agent Profile function allows WAP
content to be automatically optimized for the T310/
T312, ensuring the intended user experience.
Several bearer types
The T310/T312 accesses WAP over a standard
GSM Data connection as well as over a GPRS
connection (network-dependent services.)
Bandwidth efficiency
Unlike traditional Internet services, WAP services
are relayed to wireless devices as binary encoded
data, maximizing bandwidth efficiency. A GPRS
connection further increases efficiency.
17 January 2003
White Paper T310/T312
Easy create for WAP
Creating a WAP service is no harder than creating
an Internet/intranet service, as WML and
WMLScript are based on well-known Internet
languages such as HTML and JavaScript.
Using standard tools
Service creators can use standard tools such as
ASP (Active Server Page) or CGI (Common
Gateway Interface) to generate content
dynamically. Services can be created once and
then made accessible on a broad range of wireless
networks.
Maintain customer base
Existing services can be adapted to WAP. The
necessary binary encoding is handled by a WAP
Gateway, allowing HTML-based services to be
viewed on the WAP browser of the T310/T312. An
XHTML page can be viewed in both the WAP
browser and in any standard Web browser.
Improve productivity
A business can use a WAP gateway to provide a
secure connection to its corporate network,
improving internal communication flow by making
information available to mobile as well as office
users.
The WAP profiles
A WAP profile holds network settings and user
identification, allowing the user to switch easily
between corporate services and WAP services on
the Internet, simply by switching WAP profile.
The T310/T312 has dynamic WAP profile handling,
which means that the user can add, edit and delete
WAP profiles. The T310/T312 has a maximum of 5
WAP profiles.
During WAP browsing, the options button on the
T310/T312 gives the user immediate access to a
dynamic option menu for WAP services, similar to a
mouse right-click in PC programs.
Bearer type characteristics
The T310/T312 accesses WAP services over IP. IP
can be provided either over GSM Data or GPRS,
depending on network services.
Typical differences which distinguish the bearer
types are listed below.
GPRS access
• Data is transmitted in packets, with transmission capacity being used by the application in
use on an as-needed basis.
• Higher transmission speed than with GSM Data
or SMS access.
Gateway characteristics
• Pricing of GPRS can for example be dependent
on the volume of data transmitted, rather than
the duration of the connection.
• Ideal for complex pull services, browsing, data
transfer, provisioning, pager services, messaging services, info services, push initiations.
GSM data access
• Circuit connection of data calls, which means
that the phone is connected during the entire
WAP session.
• Pricing is comparable to that of data calls in the
network.
A WAP Gateway provides Internet/intranet as well
as WAP services to the mobile browser. A Gateway
is identified by an IP number, depending on access
type.
End-to-end gateway navigation
The WAP 2.0 supports E2E (End-toEnd) Gateway
navigation, making it possible for example for a
bank to redirect its clients from the Internet
gateway to its own gateway.
18 January 2003
Security using WAP
White Paper T310/T312
For certain WAP services, such as banking
services, a secure connection between the phone
and WAP gateway is necessary. An icon in the
display of the T310/T312 indicates when a secure
connection is in use.
The T310/T312 is based on the WAP 2.0 (WML 1.3)
specification suite, in which security functionality is
specified by a technology called Wireless Transport
Layer Security (WTLS). The WAP protocols for
handling connection, transport and security are
structured in layers, with security handled by the
WTLS layer, operating above the transport protocol
layer. WTLS classes define the levels of security for
a WTLS connection:
• WTLS class 1 – encryption with no authentication.
• WTLS class 2 – encryption with server authentication.
• WTLS class 3 – encryption with both server and
client authentication.
Server authentication requires a server certificate
stored at the server side and a trusted certificate
stored at the client side.
Client authentication requires a client certificate
stored at the client side and a trusted certificate
stored at the server side.
Certificates
To use authenticated connections, the user needs
to have certificates stored in the phone. There are
two types of certificates:
• Trusted certificate
A certificate that guarantees that a WAP site is
genuine. If the phone has a stored certificate of
a certain type, it means that the user can trust
all WAP gateways that use the certificate.
Trusted certificates can be pre-installed in the
phone, in the SWIM or they can be downloaded
from the trusted supplier’s WAP page.
• Client certificate
A personal certificate that verifies the user’s
identity. A bank that the user has a contract with
may issue this kind of certificate. Client certificates can be pre-installed in the SWIM card.
WIM locks (PIN codes)
There are two types of WAP security locks (PIN
codes) for a SWIM, which protect the subscription
from unauthorized use. The PIN codes should
typically be provided by the supplier of the SWIM.
• Access lock
An access lock protects the data in the WIM.
The user is asked to enter the PIN code the first
time the SWIM card is accessed when establishing a connection.
A Wireless Identity Module (WIM) can contain both
trusted and client certificates, private keys and
algorithms needed for WTLS handshaking and
signature generation. The WIM module can be
placed on a SIM card and is then referred to as a
SWIM card.
• Signature lock
In the T310/T312, the user can check which
transactions have been made with the phone when
browsing. Each time the user confirms a
transaction with a signature lock code, a contract is
stored in the phone. The contract contains details
about the transaction.
Configuration of WAP settings
An easy way to perform WAP configuration in the
T310/T312 is to use the step-by-step WAP
configurator available on http://
www.SonyEricsson.com. The configurator utilizes
OTA provisioning.
19 January 2003
A signature lock is used for confirming transactions, much like a digital signature.
White Paper T310/T312
Manual configuration is done using the menu
system in the phone. This is described in the User’s
guide.
Over-the-air provisioning
of WAP settings
To simplify the configuration of WAP settings in the
T310/T312, all settings can be sent to the phone as
an SMS message. This makes it easy for an
operator, a service provider or a company to
distribute settings for Internet/intranet, and WAP,
without the user having to configure the phone
manually. This also makes it easy to upgrade
services, as no manual configuration is required.
• The OTA configuration message is distributed
via SMS point-to-point.
• The setup information is a binary encoded XML
message (WBXML). To receive information
about OTA specifications, please contact your
local Sony Ericsson representative for consumer products. A configurator that utilizes OTA
provisioning can be tested on www.SonyEricsson.com.
• The user is alerted about new settings when the
ongoing browsing session ends. Settings are
not changed during an ongoing browsing session.
• 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 recipient. It is
important that the user can verify that the configuration message is authentic.
Push services
Examples of WAP services that can be pushed
include:
• Notification of new e-mail, voice mail, etc.
• News, sports results, weather forecasts, finan-
cial information (stock quotes etc.).
• Personal Information Manager (PIM) - delivery
of contacts, meeting requests etc.
• Smart card e-cash.
• Interactive games.
In the T310/T312, the user selects whether to allow
push messages or not. There are two different
forms of Push services:
Service Indication (SI)
An SI service sends to the browser a text message
with a URL of a WAP page. If the user decides to
load the URL, normal WAP browsing commences.
When an SI is received by the T310/T312, the user
can load it immediately, postpone it or delete it.
Received SIs are stored in the Push Inbox and can
be viewed and loaded at a later time. The Push
Inbox displays a list containing the first part of each
received message. The list is sorted by action
attribute (high/medium/low) or reception time of the
message.
Service Loading (SL)
An SL service sends and displays a WAP page if
accepted by the user. If the SL is not accepted, it is
loaded and stored in the cache for later use. The
user can start the browser and load the page from
the cache manually.
20 January 2003
Mobile Internet
The mobile Internet offers much more than mobile
access to the Internet. It opens up a whole new
range of situation-based services that give the user
access to personalized communications,
information and entertainment, anytime, anywhere.
Data connections
White Paper T310/T312
In order to browse via WAP or use an Internet
connection, the user must have a data
communication connection configured in the
phone. This connection contains specific settings
and parameters to connect to an appropriate
server. Several data connections can be saved in
the T310/T312. To make it easier for the user, data
connections can be provided by the operator via
OTA provisioning.
Advantages of data connections include:
• Once the data connections are defined and
named, the user does not have to enter the
settings for the connection again.
• Data connections can be re-used at any time.
• Individual data settings for working with WAP, e-
mail or the Internet can be stored and activated
as needed.
• Data connections can be used for both GSM
Data and GPRS connection settings.
• Bearer type for WAP and corresponding bearerspecific parameters may be selected.
• Data connections contain all the necessary
settings for the Internet access point, including
modem pool phone number or IP address, user
ID and password.
General Packet Radio Services
The introduction of GPRS (General Packet Radio
Services) is one of the key steps in the evolution of
today’s GSM networks for enhancing the
capabilities of data communication. Data traffic is
increasing enormously (over both wired and
wireless networks), with the growth in demand for
Internet access and services paralleling that for
mobile communications. Users want access to the
Internet while they are away from their offices and
homes, and surveys have found that the vast
majority of business professionals want the ability
to send and receive e-mail, browse the Web and
transmit text and graphics on a portable device.
That is why the main applications driving Mobile
Internet development are e-mail clients and Web
browsers.
The demand for high-speed Internet access will be
the key driver for coming generations of wireless
services, and GPRS can deliver the necessary
speed. GPRS allows innovative services to be
created, enabling new and previously inaccessible
market segments to be addressed and increasing
customer loyalty.
GPRS applications can be developed as both
horizontal and vertical. Vertical applications are
specific, including those for operations such as
21 January 2003
White Paper T310/T312
reaching police and emergency, taxi, delivery or
automated services (vending machines,
supervision, vehicle tracking). Horizontal
applications are more generic and include those for
Internet access, e-mail, messaging, e-commerce
and entertainment.
GPRS is able to take advantage of the global
coverage of existing GSM networks. Applications
developed for GPRS can be deployed on a large
1
9,600/14,400
9,600/14,400
9,600/14,400
9,050/13,400/
15,600/21,400
2
9,050/13,400/
15,600/21,400
9,050/13,400/
15,600/21,400
scale and can reap the associated benefits. GPRS
also provides a secure way to connect to private
networks, banking and financial services.
With GPRS, the T310/T312 sends data in
“packets” at a very high speed. The T310/T312
uses transmission capacity only when data is sent
or received. For details, see “GPRS technical data”
on page 66.
GSM
9,600 bps
14,400, 19,200 or 28,800 bps (HSCSD)
GPRS
9,050, 13,400,
15,600, 18,100,
21,400, 26,800,
27,150, 31,200
40,200, 42,800,
46,800 or 64,200 bps
9,050/13,400/
15,600/21,400
A comparison between GSM and GPRS
1. A normal GSM call uses only one of eight
repeating time slots in the GSM channel, giving a
data speed of 9,600 bps. The T310/T312 supports a more efficient coding scheme, giving data
speeds of up to 14,400 bps (with necessary network support). Furthermore, High Speed Circuit
Switched Data (HSCSD) adds the possibility of
using two time slots for receiving data, increasing
the data speed to as much as 28,800 bps (network dependent).
2. In GPRS, data is sent in packets, with up to
three time slots being combined to provide the
necessary bandwidth. The T310/T312 is prepared to support 3+1 time slots, giving speeds of
up to 40,200 bps for receiving data, depending
on coding scheme.
22 January 2003
Using GPRS in the T310/T312
White Paper T310/T312
Instead of occupying an entire voice channel for
the duration of a data session, the T310/T312
sends/receives data in small packets, as needed,
much like IP on the Internet. Because of this, the
T310/T312 has data transmission abilities
summoned by the application in use on an asneeded basis.
The GPRS specification includes four coding
schemes – CS1, CS2, CS3 and CS4 – that allow
theoretical data speeds of 9,050 bps, 13,400 bps,
15,600 bps and 21,400 bps respectively. The T310/
T312 works with all four coding schemes, but data
speed will naturally vary according to network
configuration. At the moment, CS-3 and CS-4 are
not supported in any live network, i e present
speed is limited to 40,200 bps.
Information about the identity of the phone and the
characteristics of the connection are described in
the PDP (Packet Data Protocol) context. This
information is stored both in the phone and in the
mobile network, so that each phone is identified
and “visible” to the system.
Using GPRS with the T310/T312 has
several advantages, for example:
• All connection settings can be managed by
using the data connections feature.
• High speed
• Cost efficient when downloading large files,
images etc.
• Use transmission capacity only when needed,
thus reducing costs.
• WAP over GPRS
• Access the Internet via WAP at high speed.
• E-mail over GPRS
• Data communication
• Transfer data and access the Internet or an
intranet with a PC, PDA or handheld device
connected via infrared.
• Receive GPRS configuration settings from the
provider over the air, OTA, making manual
configuration unnecessary.
• User controlled settings
• Take advantage of full user control in the data
connections menu, establishing multiple
descriptions and accessing advanced settings
for GPRS.
Modem and AT commands
The T310/T312 contains a complete GSM/GPRS
modem. This provides data and e-mail
communication, as well as Internet/intranet access,
for a connected PC, PDA or handheld device. Once
the PC/PDA is connected to the phone using
infrared, and the appropriate software is installed,
the modem in the phone works in a similar way to a
PC Card modem, or an external modem.
GSM data communication
The built-in data capability turns the phone into a
modem when connected to a PC/PDA. The T310/
T312 offers the user data connection anytime,
anywhere, unmatched by fixed telephone
networks. Each GSM channel is divided into eight
In the T310/T312, AT commands are used for:
• controlling the data communication between
the PC and the remote service
• configuring and requesting settings and behaviours in the phone, from a connected PC or PDA
repeating time slots. A normal GSM voice or data
call is circuit switched, and only one time slot is
used for each call. The data speed is therefore
23 January 2003
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