Siemens TC63 manual Remote SIM Access RSA Commands, Basic Remote SIM Access Usage Scenario

TC63 AT Command Set

15. Remote SIM Access (RSA) Commands

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15.Remote SIM Access (RSA) Commands

This chapter contains the reference of AT commands and responses related to the Remote SIM Access (RSA) feature of the Cellular Engine TC63.

RSA allows the TC63 to use a SIM card via its serial interface additionally to the SIM which is locally attached via the dedicated lines on the interface connector.

For further details contact the Wireless Modules Application Engineering Department at Siemens AG.

Figure 15.1, Basic Remote SIM Access Usage Scenario illustrates a possible RSA use case:

•The TC63 is built in a car as part of and controlled by a Car Application, e.g. a telematic or telemetry system.

•If a car driver enters his car he connects his cell phone with the Car Application. This can be done via a car cradle or a wireless link.

Figure 15.1: Basic Remote SIM Access Usage Scenario

The necessary protocols and procedures are implemented following the «SIM Access Profile Interoperability Specification» [12].

As stated there, with this profile the user can personalize his/her car-embedded phone with a SIM card in an external device, which is connected via a wireless link. The external device can either be a simple SIM card holder or a portable phone, which is brought into the car.

The SIM Access Profile builds on the interface between the telephone and a SIM card, refer to the «Specifi- cation of the Subscriber Identity Module (GSM 11.11)» [23].

Since the TC63 itself does not control a Bluetooth wireless link, the SIM communication is routed via a serial channel. It's up to an external application to map this data to any suitable communication path, e.g. a car cra- dle or a Bluetooth modem as the SIEMOS Bluetooth-Module offered by Siemens AG.

TC63_ATC_V00.490	Page 373 of 501	5/24/05
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