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  1. #1
    Junior Member level 1
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    sim900 stopped responding when i sent at command "AT+CSCLK"

    HI,
    i sent at command "AT+CSCLK" through hyper terminal and responded as ok. after that the sim900 is not at all responding to any of the commands.
    what is the problem with at+csclk" command . i dont know what this command does actually.
    please reply me . i need help .

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  2. #2
    Newbie level 2
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    Re: sim900 stopped responding when i sent at command "AT+CSCLK"

    Pull pin #3 of Your sim900 module (DTR pin) to the ground.
    Then send a command "AT+CSCLK=0". That will power-off module's sleeping mode.



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