TC63 AT Command Set

s

 

SAP Client

The SIM Access Client is connected via a serial link to the SIM Access Server. The client accesses and con- trols the SIM inside the Server via the serial link. Typical examples of a server are a simple SIM card holder or a portable phone in the car environment. A typical example of a client is a car phone, which uses a SIM card in the server for a connection to the cellular network. With the additional AT Commands it is possible to switch the TC63 to use an external SIM instead of the physically attached (local) SIM during runtime.

After SAP server activation (see (1) in Figure 15.3, SIM usage states of SAP client) the ME waits for the SAP message CONNECTION_REQ. The server will use its local SIM until the parameter negotiation has been accomplished successfully.

Figure 15.3: SIM usage states of SAP client

TC63_ATC_V00.490

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Confidential / Draft - Do not copy

 

 

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Siemens manual TC63ATCV00.490 375 24/05 Confidential / Draft Do not copy