Access
Access Control Commands
When the module or SIM card is locked or blocked, the only accessory operations allowed are
those that are called "Basic AT commands".
A/, Repeat Last Command
This command repeats the last command. It is not necessary to press <Enter> after this command.
Example
AT&D?
&D: 2
OK
A/
&D: 2
OK
AT, Check AT Communication
This command only returns OK.
Example
AT
OK
+CPIN, Enter PIN for Unlocking SIM Card or Enter PUK for
Unblocking SIM Card
This command unlocks the SIM card when the proper SIM PIN is provided and unblocks the SIM
card when the proper SIM PUK is provided.
April 15, 2008
Command
Syntax
Type
Execute
A/
Command
Syntax
Type
Execute
AT
G24-L AT Commands Reference Manual
Chapter 3: AT Commands Reference
Response/Action
Repeats last command
Response/Action
OK
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