Siemens AC75 - Manual (Page 405)

AC75 AT Command Set
14.2 AT+CSIM
s
AC75_ATC_V01.002 Page 405 of 569 10/30/06
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14.2 AT+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
Parameter Description
Length of
<command>
or
<response>
string.
Command passed on by the ME to the SIM.
Response data of the command returned by the SIM.
Example
The following examples explain how to use
AT+CSIM
.
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) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
GSM 07.07 - + + + + + + - + -
<length>
(num)
<command>
(str)
<response>
(str)
AT+CSIM=14,"A0A40000027F10"
Select DF-Telekom
+CSIM: 4,"9F19"
Command successful, length '19' of the response
data
OK