Siemens AC75 manual 14.2 AT+CSIM Generic SIM Access, At+Csim=?, AT+CSIM=length, command

AC75 AT Command Set

14.2 AT+CSIM

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14.2AT+CSIM Generic SIM Access

AT+CSIM allows direct control of the SIM.

Compared to Restricted SIM Access command AT+CRSM, the definition of AT+CSIM allows the ME to take more control over the SIM interface.

For parameter and SIM result coding please refer GSM 11.11 [24].

However, only the following SIM commands are supported by AT+CSIM: SELECT, STATUS, READ BINARY, UPDATE BINARY, READ RECORD, UPDATE RECORD, SEEK, INCREASE and GET RESPONSE.

The SIM interface design requires that some actions need more than one command, e.g. access to an Elemen- tary File's data requires a prior SELECT command. To ensure that two commands related to the same action are sent to the SIM consecutively, i.e. without being interrupted by other software entities, each SELECT command will be buffered in an internal directory path. Before performing new commands the internal directory path will be checked to enable the retransmittion of the buffered SELECT command's (explicit selection).

The directory path can be used to queue up to 20 Files e.g. 19 Dedicated Files (DF's) and 1 Elementary File (EF). After each AT+CSIM execution the Master File (MF) which acts as a logical root will be selected to guarantee that other software entities are not affected.

Syntax

Test Command

AT+CSIM=?

Response(s)

OK

Write Command

AT+CSIM=<length>, <command>

Response(s)

+CSIM: <length>,<response>

OK ERROR

+CME ERROR: <err>

Reference(s)

GSM 07.07

PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge 4 Last

- + + + + + + - + -

Parameter Description

<length>(num)

Length of <command> or <response> string.

<command>(str)

Command passed on by the ME to the SIM.

<response>(str)

Response data of the command returned by the SIM.

Example

The following examples explain how to use AT+CSIM.

AT+CSIM=14,"A0A40000027F10"	Select DF-Telekom
+CSIM: 4,"9F19"	Command successful, length '19' of the response
	data

OK

AC75_ATC_V01.002	Page 405 of 569	10/30/06
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