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