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GSM AT Commands


OPEN AT COMMANDS

Wavecom and Siemen module base GSM Modem are both follow the OPEN standard AT Commands.

Sample of AT Commands:

To send an SMS:
AT+CMGS="+60162721357"Sending text messages is easy.

To send the same text message:
AT+CMGW="91234567"Sending text messages is easy.

To delete text message:
AT+CMGD=3

To send USSD command:
AT+CUSD=1,"*122#"

To check if SIM card present and require pin number:
AT+CPIN?

To check if modem has registered to network:
AT+CREG?

To quiry the network name:
AT+COPS=3,0,+COPS?

To delete SMS stored in the memonry location x:
AT+CMGD=x

To list SMS that has being read:
AT+CMGL="REC READ" 

To check the signal strength, max is 31:
AT+CSQ 

To set the storage as SIM storage:
AT+CPMS="SM" 

To delete ALL SMS stored in SIM (SM):
AT+CMGD=1,4 

To read the firmware version of the modem:
AT+CMGR 

To read the IMEI number of the modem:
AT+CGSN 

For more AT Commands, pls refer to documentation of Wavecom or Siemens GSM Modem Guide.

 

 


 


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