AT Command Set
MC35_ATC_01_V04.00 Page 170 of 238 02.04.2002
7 AT Commands for SIM Application Toolkit (GSM 11.14)SIM Application Toolkit (SAT) is a technology that lets the SIM car d execute a great variety of addi-
tional applications. Conventionally, SIM cards are intended to store us er specific data, such as phone-
books, secure user identification codes and messages, but they can a lso hold a lot of value-added
mobile applications.
The SAT functionality integrated in MC35 and MC35T allows to exec ute network specific applications
implemented on the SIM card. Typical examples are online banking a nd information services.
The commands exchanged between SAT and the SIM application fall into tw o categories:
• Proactive commands – sent from the SIM application to the module’s SAT, e.g. DISPLAY TEXT.
• Envelope commands – sent from the module's SAT to the SIM application, e.g. MENU SELEC-
TION.
The SAT implementation supports SAT class 3, GSM 11.14 Release 98, no support of letter classes.
GSM 11.14 describes Proactive and Envelope Commands in detail.
Note: To give you an idea, this chapter contains a brief overview of the AT commands and re-
sponses related to the SIM Application Toolkit (SAT) implem entation. The full set of SAT spe-
cific AT commands and a detailed descripton of the SAT functions is provided in a separate
documentation: the "MC35 Remote-SAT User's Guide" supplied with MC35 a nd MC35 Termi-
nal. Please contact your local dealer or Siemens AG for details.