CRSM命令学习总结完整讲解.docVIP

第 PAGE8 / NUMPAGES 10 页 CRSM标准AT命令 Restricted SIM access +CRSM Table?2: +CRSM action command syntax Command Possible response(s) +CRSM=command[,fileid [,P1,P2,P3[,data]]] +CRSM: sw1,sw2[,response] +CME ERROR: err +CRSM=? Description By using this command instead of Generic SIM Access +CSIM TE application has easier but more limited access to the SIM database. Set command transmits to the MT the SIM command and its required parameters. MT handles internally all SIMMTinterface locking and file selection routines. As response to the command, MT sends the actual SIM information parameters and response data. MT error result code +CME ERROR may be returned when the command cannot be passed to the SIM, but failure in the execution of the command in the SIM is reported in sw1 and sw2 parameters. Refer to subclause?9.2 for err values. Coordination of command requests to SIM and the ones issued by GSM/UMTS application inside the MT is implementation dependent. However the TE should be aware of the precedence of the GSM/UMTS application commands to the TE commands. Defined values command (command passed on by the MT to the SIM; refer GSM?51.011?[28]): 176 READ BINARY 178 READ RECORD 192 GET RESPONSE 214 UPDATE BINARY 220 UPDATE RECORD 242 STATUS all other values are reserved NOTE 1: The MT internally executes all commands necessary for selecting the desired file, before performing the actual command. fileid: integer type; this is the identifier of a elementary datafile on SIM. Mandatory for every command except STATUS NOTE 2: The range of valid file identifiers depends on the actual SIM and is defined in GSM?51.011?[28]. Optional files may not be present at all. P1, P2, P3: integer type; parameters passed on by the MT to the SIM. These parameters are mandatory for every command, except GET RESPONSE and STATUS. The values are described in GSM?51.011?[28] data: information which shall be written to th