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GSM Module
2
AT Commands
2.1
Common Commands
2.1.1
A/: repeat
Description
This command is used to repeat the previous command.
Format A/
AT+CSQ
Inquire current signal strength
A/ Repeat
AT+CSQ
command
AT+CMGS=”13714393404”
>123
→
Send a text message
Example
A/
>123
→
Repeat AT+CMGS command
2.1.2
ATA: answer
Description
This command is used to answer a call.
Format ATA
RING
An incoming call rings.
Example
ATA
Answer the incoming call.
2.1.3
ATD: dial
Description
This command is used to originate a voice call, data and fax call.
Format
ATD<string>;
ATD><mem><n>;
ATD><n>;
ATD>”name”;
AT+CPBS="SM"
ATD13024540756;
Select SIM card phonebook as the
current phonebook
Search the number from SIM card
phonebook and dial
AT+CPBS="SM"
ATD>2;
OK
Select SIM card phonebook as the
current phonebook
Search the second phone number in
current phonebook
ATD>SM1;
Dial the first number in SIM card
phonebook
Example
ATD13714393404;
Directly dial the phone number
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