At^csim Generic Sim Access - Multi-Tech MultiModem EDGE Reference Manual

13.2 AT^CSIM Generic SIM Access

Description:
Test Command Syntax:
Response:
Write Command Syntax:
Response:
Parameter Descriptions:
<length>
Length of <command> or <response> string.
<command>
Command passed on by the ME to the SIM.
<response>
Response data of the command returned by the SIM.
Example:
The following examples explain how to use AT+CSIM.
AT+CSIM=14,"A0A40000027F10"
+CSIM: 4,"9F19"
OK
AT+CSIM=14,"A0A40000026F3A"
+CSIM: 4,"9F0F"
OK
AT+CSIM=16,"A0C000000F000000"
+CSIM: 34,"000002306F3A040011F0220102011C9000"
OK
Multi-Tech Systems, Inc. AT Commands for EDGE Modems (S000371G)
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 [23].
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 Elementary 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 retransmission 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.
AT+CSIM=?
OK
AT+CSIM=<length>, <command>
+CSIM: <length>,<response>
OK
ERROR
+CME ERROR: <err>
Chapter 13 – SIM-Related Commands
Select DF-Telekom
Command successful, length '19' of the response data
Select EF-ADN (Abbreviated dialing numbers)
Command successful, length '0F' of the response data
Get Response
220