HUAWEI MG323 GSM M2M Module
AT Command Interface Specification Commands for Security Control
Issue 02 (2010-11-23) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd. 43
5 Commands for Security Control
This chapter describes the AT commands that allow external applications to configure
different security-based policies of the module.

5.1 AT+CPIN - Command for PIN Management

The AT+C PIN command identifies networks.

5.1.1 Checking Whether a PIN Management Command Exists

Test
command
AT+CPIN=?
Function Check whether a PIN management command exists.
Response <CR><LF>OK<CR><LF>

5.1.2 Reading the Password Entry Request

Read
command
AT+CPIN?
Function Reads the current authentication status of the SIM card.
Response z In case of successful execution:
<CR><LF>+CPIN: <code><CR><LF>
<CR><LF>OK<CR><LF>
z In case of an error related to the MT: <CR><LF>+CME ERROR:
<err><CR><LF>
Parameter description
Code: string without quotation marks. Table 5-1 describes PIN authentication
performed by the SIM card.