MC55 AT Command Set
14. SIM Application Toolkit (SAT) Commands s
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MC55_ATC_V01.05 Page 362 of 469 2/10/04
Confidential / Released
14. SIM Application Toolkit (SAT) Commands
This chapter offers a brief reference of commands and responses rel ated to the MC55's SIM Application Toolkit
(SAT) implementation. Detailed information is available with the document "Remote-SAT User Guide" [4]. Please
contact the Wireless Modules Application Engineering Department at Siemens AG for details.
ETSI specification GSM 11.14 [19] defines SAT in detail.
SAT allows for the execution of applications provided by a Subsciber Identity Module (SIM). Usua lly SIM cards
are used for storing GSM network provider and user specific data, e.g. phonebook entr ies and Short Messages
(SMS). However, a SIM card may also hold a SIM Application.
Since the MC55 has SAT functionality it is able to execute the commands issued by applicatio ns implemented
on a network provider specific SIM card.
Two groups of commands are used between the ME and the SIM Application:
• Proactive Commands are issued to the MC55's SAT from the SIM Application, such as "DISPLAY TEXT".
• Envelope Commands are responded to the SIM Application from the MC55, such as "MENU SELECTION".

14.1 AT^SSTA SAT Interface Activation

Syntax
Test Command
AT^SSTA=?
Response(s)
^SSTA:(list of supported <state>s), (list of supported <Alphabet>s)
OK
Read Command
AT^SSTA?
Response(s)
^SSTA: <state>, <Alphabet>, <allowedInstance>, <SatProfile>
OK
Write Command
AT^SSTA=<mode>[, <Alphabet>]
Response(s)
OK
PIN ASC0 ASC1 MUX1 MUX2 MUX3
! % % % % %
Reference(s)
SIEMENS