TC63 AT Command Set

14. SIM related Commands

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14.SIM related Commands

The AT commands described in this chapter are related to the Subscriber Identity Module (SIM) connected to TC63.

Note:

If using data from the SIM please bear in mind that the content of all Elementary Files is subject to change at any moment!

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, [24].

To get informed that changing Elementary Files has taken place the TA needs to hook to the SAT Proactive Com- mand "REFRESH". To achieve this, the AT command interface of SAT, i.e. Remote-SAT, needs to be activated. An overview is given at Chapter 16., SIM Application Toolkit (SAT) Commands, additional information is available with the document "Remote-SAT User Guide" [4].

14.1AT+CRSM Restricted SIM Access

AT+CRSM offers easy access of the Elementary Files on the SIM. Access to the SIM database is restricted to the commands which are listed at <command>. However, additional SIM commands are available via AT^SXSM. All parameters of AT+CRSM are used as specified by GSM 11.11 [23]. TC63 handles internally all required SIM interface locking and file selection routines.

As response to the command, the TC63 sends the actual SIM information parameters and response data. Error result code "+CME ERROR" may be returned if the command cannot be passed to the SIM, e.g. if the SIM is not inserted. However, failure in the execution of the command in the SIM is reported in <sw1> and <sw2> param- eters.

AT+CRSM requires PIN authentication. However, using <command> "READ BINARY" and <command> "READ RECORD" is possible before PIN authentication and if the SIM is blocked (state after three failed PIN authenti- cation attempts) to access the contents of the following Elementary Files:

EF Symbol

EF Name

EF ID (hex.)

EF ID (dec.)

EFICCID

ICC identification

2FE2

12258

EFELP

Extended language pref-

2F05

12037

 

erence

 

 

EFLP

Language preference

6F05

28421

EFSPN

Service provider name

6F46

28486

EFAD

Administrative data

6FAD

28589

EFPhase

Phase identification

6FAE

28590

EFECC

Emergency call codes

6FB7

28599

Please beware of possible changes to Elementary Files by the network at any time, refer Chapter 14., SIM related Commands.

Syntax

Test Command

AT+CRSM=?

Response(s)

OK

TC63_ATC_V00.490

Page 363 of 501

5/24/05

Confidential / Draft - Do not copy

 

 

Page 363
Image 363
Siemens TC63 manual SIM related Commands, 14.1 AT+CRSM Restricted SIM Access, At+Crsm=?