Figure 15.2: Sim Usage States Of Sap Server - Siemens TC63 Command Set

TC63 AT Command Set
In general, the ME can operate either as SAP server or as SAP client. A brief description of the configuration is
given below.
• SAP Server
The SIM Access Server has direct (galvanic) access to a SIM. It acts as a SIM card reader, which assists the
client in accessing and controlling the SIM via the serial link. Typical examples of a server are SIM card reader
or cellular phones which are integrated in a car environment.
After SAP client activation (see (1) in Figure 15.2,
SAP message CONNECTION_REQ. However, the client will still use its local SIM card until a server
responds and the parameter negotiation with subsequent ATR access has been accomplished successfully.
TC63_ATC_V00.490
Confidential / Draft - Do not copy
SIM usage states of SAP

Figure 15.2: SIM usage states of SAP server

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server) the ME starts sending the
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