Figure 15.3: Sim Usage States Of Sap Client - Siemens TC63 Command Set

TC63 AT Command Set
• 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,
message CONNECTION_REQ. The server will use its local SIM until the parameter negotiation has been
accomplished successfully.
TC63_ATC_V00.490
Confidential / Draft - Do not copy
SIM usage states of SAP

Figure 15.3: SIM usage states of SAP client

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client) the ME waits for the SAP
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