Siemens AC75 14. SIM related Commands

AC75 AT Command Set

14. SIM related Commands s

AC75_ATC_V01.002 Page 402 of 569 10/30/06

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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

AC75.

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 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, [25].

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].

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 [24]. AC75 handles internally all required SIM

interface locking and file selection routines.

As response to the command, the AC75 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:

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

related Commands.

Syntax

EF Symbol EF Name EF ID (hex.) EF ID (dec.)

EFICCID ICC identification 2FE2 12258

EFELP Extended language pref-

erence

2F05 12037

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

Test Command

AT+CRSM=?

Response(s)