Siemens MC35 - Manual (Page 163)

AT Command Set
MC35_ATC_01_V03.02 Page 163 of 228 13.03.2002
7 AT Commands for SIM Application Toolkit (GSM 11.14)
SIM Application Toolkit (SAT) is a technology that lets the SIM card execute a great variety of addi-
tional applications. Conventionally, SIM cards are intended to store user specific data, such as phone-
books, secure user identification codes and messages, but they can also hold a lot of value-added
mobile applications.
The SAT functionality integrated in MC35 and MC35T allows to execute network specific applications
implemented on the SIM card. Typical examples are online banking and information services.
The commands exchanged between SAT and the SIM application fall into two 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) implementation. 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 and MC35 Termi-
nal. Please contact your local dealer or Siemens AG for details.