sierra wireless mc8790 modules

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  • #6212 Reply

    Andrew

    Hello
    I have 50pcs of MC8790 modules and only 4 connecting to operator
    rest of modules give:
    AT+CGREG?

    +CGREG: 0,0

    OK
    AT+CGATT=1

    ERROR
    AT+CGATT?

    +CGATT: 0

    OK
    AT+CGDCONT=1,”IP”,”internet”

    OK
    AT+CGACT=1,1

    +CME ERROR: phone failure

    please help maybe is specific AT command for reviving this modules
    Thanks

    #6213 Reply

    Admin
    Keymaster

    Hi Andrew,
    The mc8790 module you’re testing is not registered with the network operator. The status indicates that it not not even searching for an operator to register.

    AT+CGREG?

    +CGREG: 0,0

    OK

    Unless the registration is sucessful, you cannot attach and connect.

    You can try the below in the ‘Script mode’ tab of AT Command Tester.

    
    //Verify the SIM status
    AT+CPIN?
    
    //Check the signal strength,
    AT+CSQ?
    
    //Get the PDP Contexts
    AT+CGDCONT?
    
    //Get the available operator list
    AT+COPS?
    
    

    Compare the above results for the modules that connects sucessfully and the ones that dont..

    • This reply was modified 6 years, 1 month ago by  Admin.
    • This reply was modified 6 years, 1 month ago by  Admin.
    • This reply was modified 6 years, 1 month ago by  Admin.
    • This reply was modified 6 years, 1 month ago by  Admin.
    • This reply was modified 6 years, 1 month ago by  Admin.
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