Sim Application Toolkit - Sony Ericsson T290i White Paper

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 trans-
ports. 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 cen-
trally 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.
SIM AT services supported by the T290i/T290c
Service
CALL CONTROL
CELL BROADCAST DOWN-
LOAD
DISPLAY TEXT
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 pro-
gramming is distributed to users over the air,
directly to their phones. In the T290i/T290c, a sep-
arate menu is available for functions residing on the
SIM card. These can include submenus for control-
ling functions, and also functions which allow the
phone to initiate calls, send data, and display infor-
mation to the user.
Mode
Text of up to 240 characters (120 ucs2 coded).
bit 1: 0 = normal priority
1 = high priority
bit 8: 0 = clear message after a delay
1 = wait for user to clear message
33
White Paper T290i/T290c
Support
in T290i/
T290c
Yes
Yes
Yes
Yes
Yes
Yes
Yes
October 2004