Siemens AC75 - page 416

AC75 AT Command Set
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AC75_ATC_V01.002 Page 416 of 569 10/30/06
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The AC75 can operate either as SAP server or as SAP client. A brief description of the configuration is given
below.
SAP server
The SAP server has direct (galvanic) access to a SIM. It acts as a SIM card reader which assists the SAP client
in accessing and controlling this SIM via the serial link.
After RSA activation, the SAP server waits for SAP CONNECTION_REQ messages from the SAP client (see
Figure 15.3, SIM usage states of SAP server). The SAP server still uses its local SIM card until the parameter
negotiation with an SAP client has been accomplished successfully.
Figure 15.3: SIM usage states of SAP server