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HC25 AT Command Set - Portech.com.tw

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<strong>HC25</strong> <strong>AT</strong> <strong>Command</strong> <strong>Set</strong><br />

14. SIM Application Toolkit (S<strong>AT</strong>) <strong>Command</strong>s s<br />

14. SIM Application Toolkit (S<strong>AT</strong>) <strong>Command</strong>s<br />

This chapter offers a brief reference to <strong>AT</strong> <strong>com</strong>mands and responses related to the <strong>HC25</strong>'s SIM Application Toolkit<br />

(S<strong>AT</strong>) implementation. A consistent and detailed description can be found in the "Remote-S<strong>AT</strong> User's Guide"<br />

[4]. For further advice please contact the Wireless Modules Application Engineering Department at Siemens AG.<br />

ETSI specification GSM 11.14 [20] defines S<strong>AT</strong> in detail.<br />

SIM Application Toolkit (S<strong>AT</strong>) is a technology that allows an application running on the SIM/UICC to control the<br />

Mobile Equipment (ME). Remote-S<strong>AT</strong> (RS<strong>AT</strong>) provides a link be<strong>tw</strong>een applications located on the SIM/UICC<br />

and a customer application (TA). The purpose of RS<strong>AT</strong> is to allow the TA to send <strong>AT</strong> <strong>com</strong>mands to the S<strong>AT</strong> interface<br />

and to display all S<strong>AT</strong> activities on the user interface of the customer application.<br />

Two groups of <strong>com</strong>mands are exchanged be<strong>tw</strong>een the S<strong>AT</strong> located on the <strong>HC25</strong> and the SIM Application running<br />

on the SIM/UICC:<br />

• Proactive <strong>com</strong>mands are sent from the SIM application to the <strong>HC25</strong>'s S<strong>AT</strong>, such as "DISPLAY TEXT".<br />

• Envelope <strong>com</strong>mands are sent from the <strong>HC25</strong>'s S<strong>AT</strong> to the SIM application, such as "MENU SELECTION".<br />

14.1 <strong>AT</strong>^SSTA S<strong>AT</strong> Interface Activation<br />

The <strong>AT</strong>^SSTA write <strong>com</strong>mand can be used to specify the Remote-S<strong>AT</strong> activation mode and, if ER mode<br />

is enabled, to explicitly activate the Remote S<strong>AT</strong> interface. Removing and inserting the SIM does not affect the<br />

activation status.<br />

S<strong>AT</strong> <strong>com</strong>mands which are not using the <strong>AT</strong> interface (non MMI related S<strong>AT</strong> <strong>com</strong>mands , e.g. PROVIDE LOCAL<br />

INFORM<strong>AT</strong>ION) are executed without activating Remote-S<strong>AT</strong>.<br />

The read <strong>com</strong>mand can be used to request the current operating status and the used alphabet of the Remote-<br />

S<strong>AT</strong> interface.<br />

Syntax<br />

Test <strong>Command</strong><br />

<strong>AT</strong>^SSTA=<br />

Response(s)<br />

^SSTA:(list of supported s), (list of supported s)<br />

OK<br />

Read <strong>Command</strong><br />

<strong>AT</strong>^SSTA<br />

Response(s)<br />

^SSTA: , , , , <br />

OK<br />

Write <strong>Command</strong><br />

<strong>AT</strong>^SSTA=[, ]<br />

Response(s)<br />

OK<br />

Reference(s) PIN USB0-MDM USB0-APP Last<br />

SIEMENS - + + -<br />

<strong>HC25</strong>_<strong>AT</strong>C_V01.200 Page 234 of 290 7/25/07<br />

Confidential / Released

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