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  1. #1
    Junior Member cdxp is on a distinguished road
    Join Date
    Apr 2018

    Sending carrier SIM /plan setup codes not working MR6400

    Model :

    Hardware Version :

    Firmware Version :

    ISP : [/COLOR]

    I can send and receive SMS messages from the MR6400 but cannot send carrier codes.
    We use pre paid SIMs for temporary WiFi remote installations and in order to set them up with the carrier need to send a code in the form *nnn*nnnn# eg *777*75# to start a 2GB plan for 30 days .
    What we do at the moment is install the sim in a phone send the codes from there and then install them in the MR6400 which is tedious
    Would much prefer to be able to send from the MR6400 administration interface. Is there a trick for this ?

  2. #2
    Members Ada is on a distinguished road
    Join Date
    Oct 2012
    You mentioned should be USSD not SMS.
    Unstructured Supplementary Service Data (USSD) is a technology that allows you to communicate with your service provider using short codes. It usually consists of a number that starts with * and ends with #. You can query various services on this page.
    TL-MR6400 does not support this feature, so we can only do that on the phone.

  3. #3
    For Activating USSD change the operation mode to 3G/4G.


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