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gsmat-commandltesim900

Stop getting response from LTE module using AT command


When the number is dialed from any of the number to LTE module, I got automatic responses from that module for e.g.

[2018-07-02 15:43:30:997_R:] DSR:0 CTS:1 (RI:0) DCD:0 [2018-07-02 15:43:30:997_R:] DSR:0 CTS:1 (RI:1) DCD:0 [2018-07-02 15:43:31:012_R:] NO CARRIER . These are autogenerated responses without firing AT commands to the module. So I don't want these responses. Please suggest me any AT command to stop this.


Solution

  • These responses are called unsolicited result codes because they are triggered by events other than AT commands.

    To learn more about the different types of responses read chapter 5.7.1 Responses in the ITU V.250 specification. V.250 is one of the most important AT command documents and you should really read all of chapter 5.

    Some of the unsolicited result codes can be individually disabled, but some (e.g. NO CARRIER) cannot, so you must write your modem software to handle them. There is no way around.