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T600/T602
White Paper, September 2002
15
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 net-
work 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 pro-
grams that also have an HTML version for desk-
top use. Work is currently underway on building
interfaces between the two technologies.
For an operator, a company or service provider,
SIM AT offers a powerful way to develop pro-
grams and services to users, without the need for
new or upgraded equipment. All necessary setup
and programming is distributed to the users over
the air, directly to their phones. In the T600/T602,
a separate menu is available, and there are also
functions which allow the phone to initiate calls,
send data and display information for the user.
SIM AT services supported by the T600/T602
Service Mode
Support
in T600/
T602
CELL BROAD-
CAST DOWN-
LOAD
Yes
DISPLAY TEXT 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 Yes
1 = alphabet set Yes
bit 2: 0 = SMS default alphabet Yes
1 = UCS2 alphabet Yes
bit 3: 0 = character sets defined by bit 1 and bit 2 are enabled. No
1 = character sets defined by bit 1 and bit 2 are disabled
and the “Yes/No” response is requested.
No