> 2.17 | Remote SIM Access

> The feature Remote SIM Access (RSA) allows the ME to access a remote SIM card via the serial interface of the ME in addition to the SIM card locally attached via the dedicated lines on the local SIM interface connector. The SIM Access Profile (SAP) offers the possibility to share SIM card information between different mobile devices. For further information see [2].
> An SAP setup consists of a remote SIM card connected to an SAP server, a SAP client with an optional local SIM card and an external application that connects the client and server. Either the client or the server or both can be SAP-capable ME.
> Figure 165: Remote SIM Access (SAP)
> The typical example of an SAP server is a mobile phone; it has direct access to a SIM card. The SAP server assists the client in accessing and controlling the SIM card via the serial link. In the example above the SAP Client is connected via a serial link to the external application. The application establishes and controls the Bluetooth connection with the SAP Server. The SAP Client accesses and controls the remote SIM card inside the SAP Server via the external application.
> In addition to Bluetooth, SAP can be executed with other protocols or interfaces (e.g. RS232) on the underlying layer. There is the possibility to use one ME as client and another as a server connected via serial interface.
> Two data formats are available to exchange SIM data and to set up a RSA connection:

> • | XSAP ASCII coded string format

> • | SAP binary format

> It depends on the application whether the data will be transmitted in XSAP (connection between two SAP-capable ME) or in SAP (connection between one SAP-capable ME and another SAP-capable device) format. For further details see [2].
> Please note that for the Remote SIM Access the Mux driver is absolutely necessary. For further information on the recommended installation see [2].