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T226 White Paper
July 2003 (Rev C)
28
SIM application
toolkit
The SIM Application Toolkit (SIM AT) is a smart
card-centric method of deploying programs that apply
only to GSM and to SMS and USSD transports.
Programs must be distributed on smart cards. WAP is
an Internet-centric method of deploying programs that
is independent of network technology. Programs and
content are kept centrally on web servers and
downloaded as required. While there is some overlap,
WAP is a particularly good choice when deploying
programs that also have an HTML version for desktop
use. Work is currently under way on building
interfaces between the two technologies.
For an operator, a company or service provider, SIM
AT offers a powerful way to deploy programs and
services to users, without the need for new or
upgraded equipment. All necessary setup and
programming is distributed to users over the air,
directly to their phones. In the T226, a separate menu
is available for functions residing on the SIM card.
These can include submenus for controlling functions,
and also functions which allow the phone to initiate
calls, send data, and display information to the user.
SIM AT services supported by the T226
Service Mode Support
in T226
CALL CONTROL Yes
CELL BROADCAST
DOWNLOAD
Yes
DISPLAY TEXT Text of up to 240 characters (120 ucs2 coded). Yes
bit 1: 0 = normal priority Yes
1 = high priority Yes
bit 8: 0 = clear message after a delay Yes
1 = wait for user to clear message Yes
GET INKEY General: The GET_INKEY requires that the user
press Yes to confirm his/her choice
Yes
bit 1: 0 = digits (0-9, *, # and +) only
1 = alphabet set
Yes
Yes
bit 2: 0 = SMS default alphabet
1 = UCS2 alphabet
Yes
Yes
bit 3: 0 = character sets defined by bit 1 and bit 2 are
enabled
1 = character sets defined by bit 1 and bit 2 are
disabled and the Yes/No response is requested
Yes
Yes