MC35i AT Command Set

MC35i AT Command Set13. SIM related Commands13. SIM related CommandsThe AT commands described in this chapter are related to the Subscriber Identity Module (SIM) connected toMC35i.Note:If using data from the SIM please bear in mind that the content of all Elementary Files is subject to change at anymoment!This is true because the network can change the SIM's data in the background via the SIM Application Toolkit(SAT) procedure "Data download to SIM". For a detailed description please refer to GSM 11.14, [22].To get informed that changing Elementary Files has taken place the TA needs to hook to the SAT Proactive Command"REFRESH". To achieve this, the AT command interface of SAT, i.e. Remote-SAT, needs to be activated.An overview is given at Chapter 14., SIM Application Toolkit (SAT) Commands, additional information is availablewith the document "Remote-SAT User Guide" [5].13.1 AT+CRSM Restricted SIM AccessAT+CRSM offers easy access of the Elementary Files on the SIM. Access to the SIM database is restricted to thecommands which are listed at .All parameters of AT+CRSM are used as specified by GSM 11.11 [21]. MC35i handles internally all required SIMinterface locking and file selection routines.As response to the command, the MC35i sends the actual SIM information parameters and response data. Errorresult code "+CME ERROR" may be returned if the command cannot be passed to the SIM, e.g. if the SIM is notinserted. However, failure in the execution of the command in the SIM is reported in and parameters.AT+CRSM requires PIN authentication. However, using "READ BINARY" and "READRECORD" is possible before PIN authentication and if the SIM is blocked (state after three failed PIN authenticationattempts) to access the contents of the following Elementary Files:EF Symbol EF Name EF ID (hex.) EF ID (dec.)EF ICCID ICC identification 2FE2 12258EF ELPExtended language preference2F05 12037EF LP Language preference 6F05 28421EF SPN Service provider name 6F46 28486EF AD Administrative data 6FAD 28589EF Phase Phase identification 6FAE 28590EF ECC Emergency call codes 6FB7 28599Please beware of possible changes to Elementary Files by the network at any time, refer Chapter 13., SIMrelated Commands.SyntaxTest CommandAT+CRSM=?Response(s)OKMC35i_ATC_V02.00nConfidential / ReleasedPage 290 of 3909/10/08