HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for the SIM Card
Issue 02 (2010-11-23) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. 182
12 Commands for the SIM Card
This chapter describes the AT commands related to the SIM card.

12.1 AT+CRSM - Command for Accessing a SIM Card

Through Restricted SIM Access

The AT+C RSM command accesses a SIM card through restricted SIM access.

12.1.1 Checking Whether the +CRSM Command Is Available

Test
command
AT+CRSM=?
Function Checks whether the command exists.
Response z In case of available command: <CR><LF>OK<CR><LF>
z In case of unavailable command: <CR><LF>ERROR<CR><LF>
z In case of an error related to the MT: <CR><LF>+CME ERROR:
<err><CR><LF>