AT Command Set

4.43 AT+CRSM Restricted SIM access

Test command

AT+CRSM=?

Write command

AT+CRSM=<com

mand>[,<fileId>

[,<P1>,<P2>,<P3>

[,<data>]]]

Response

OK

By using this command the TE has access to the SIM database. SIM access is restricted to the commands which are listed below.

As response to the command the ME sends the current SIM information pa- rameters and response data. ME error result code +CME ERROR may be re- turned when the command cannot be passed to the SIM, but failure in the exe- cution of the command in the SIM is reported in <sw1> and <sw2> parameters.

Response

+CRSM: <sw1>, <sw2> [,<response>]

OK / ERROR / +CME ERROR: <err>

Parameter

 

 

<command>

176

READ BINARY

 

178

READ RECORD

 

192

GET RESPONSE

 

214

UPDATE BINARY

 

220

UPDATE RECORD

 

242

STATUS

all other values are reserved; refer GSM 11.11.

<fileId>

integer type; this is the identifier for an elementary

 

data file on SIM. Mandatory for every command ex-

 

cept STATUS

<P1>,<P2>,<P3>

integer type, range 0 - 255

 

parameters to be passed on by the ME to the SIM;

 

refer GSM 11.11.

<data>

information which shall be written to the SIM (hexa-

 

decimal character format)

<sw1>, <sw2>

integer type, range 0 - 255

 

status information from the SIM about the execution

 

of the actual command. These parameters are deliv-

 

ered to the TE in both cases, on successful or failed

 

execution of the command; refer GSM 11.11.

<response>

response of a successful completion of the command

 

previously issued (hexadecimal character format)

ReferenceNote

GSM 07.07

GSM 11.11

MC35_ATC_01_V04.00

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02.04.2002

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Siemens MC35 manual 43 AT+CRSM Restricted SIM access
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MC35 specifications

The Siemens MC35 is a compact and versatile modem designed primarily for mobile communication, data transmission, and machine-to-machine (M2M) applications. Launched in the early 2000s, it quickly became popular due to its blend of performance, reliability, and ease of integration, making it a solid choice for developers and businesses.

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Power consumption is another notable characteristic of the Siemens MC35. It is engineered to be energy-efficient, which is especially important for battery-operated devices or systems that require a prolonged operation without frequent recharging or maintenance.

In terms of physical characteristics, the MC35 is compact and lightweight, allowing it to fit into various enclosure designs without occupying much space. Its durability ensures it can perform reliably in different environments, making it suitable for outdoor and industrial applications.

To summarize, the Siemens MC35 stands out as a reliable modem with a rich feature set that includes GSM and GPRS support, SMS and voice capabilities, easy integration through various interface options, and energy-efficient operation. Its adaptability makes it a valuable tool for a wide array of communication and data transmission tasks, solidifying its place in the evolution of mobile communications technology.
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