Sony Ericsson P802 manual SIM Application Toolkit, SIM-AT Services supported by the P800

For Internal Use Only	P800 Smartphone
	White Paper, May 2002

SIM Application Toolkit

SIM Application Toolkit (SIM-AT) is a method of developing small applications for mobile phones. User interaction is via the screen and keyboard, whilst connectivity is provided by means of SMS and USSD transports. SIM-AT can also be used to initiate phone calls. A typical application is to provide a simple menu-based interface to value-added services provided by the mobile operator. The application is stored and distributed on the SIM card. SIM-AT offers a powerful way to deploy programs and services to users, without the need for new or upgraded equipment. All necessary set-up and programming is distributed to users over the air, directly to their phones.

The P800 supports SIM-AT according to GSM 11.14 in order to protect investment in SIM-AT based applications and to enable users to continue using the services and applications on their SIM cards. The applications are accessed from within the MMI of the P800’s Phone application.

The P800 also has much richer application environments including WAP, Web, C++ and Java. These enable applications to be created with a much better MMI and superior connectivity such as TCP/IP over the internet.

SIM-AT Services supported by the P800

Service	Description
CALL CONTROL	This will enable the SIM to allow, bar or modify a call
	(supplementary service operation or USSD operation).
DISPLAY TEXT	Text is displayed on the screen according to the request from the
	SIM application:
	Priority:		Normal, High
	Clear Message: Automatic after delay, Wait for user.
	Alphabet:		UCS2, packed and unpacked SMS default
EVENT DOWNLOAD	The Event Download enables the ME to report on events to the
	SIM:	Location Status
	•
	•	Idle Screen Available
	•	Language Selection
	•	Call Connected
	•	Call Disconnected
	•	Browser Termination
GET INKEY	Request the user to enter a single character.
	• 0-9 *# + only or alphabet set
	• SMS default or UCS2 character set
GET INPUT	Request the user to enter a number of characters.
	• 0-9 *# + only or alphabet set
	• SMS default or UCS2 character set
	• Input echoed or secret
	•	Packed or unpacked.
LAUNCH BROWSER	The P800 will launch the integrated browser.
PLAY TONE	Play supervisory tones (e.g. Dial tone, Busy tone) as defined in
	GSM 02.40.

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