Quectel EC200U MQTT AT Command (QMTOPEN)

IoT Modules LTE Standard Module
1

I am trying to send data from Quectel EC200U-CN to the AWS server using MQTT AT commands.
But the AT+QMTOPEN command always gives a response as +QMTOPEN: 0,5.
Internet is available in a module through a sim.
Please solve the error

2

AT+QMTOPEN=0,“a3qvnhplljfr-ats.iot.us-west-2.amazonaws.com”,8883
OK

+QMTOPEN: 0,5
This is the error

4

Hey All

That error is now resolved. Please resolve the following error.
AT+QMTOPEN=0,“a3…-ats.iot.us-west-2.amazonaws.com”,8883

OK

+QMTOPEN: 0,0

AT+QMTCONN=0,“wqm_test_06”

OK

+QMTCONN: 0,1

+QMTSTAT: 0,3

It should respond +QMTCONN:0,0,0
But I am not receiving this.
The connection state is changing.

Thanks

5

Hi，

  1. Check whether the user name and password entered are correct.
  2. Ensure that the client ID is not occupied.
  3. Rebuild the MQTT connection and try to send it again CONNECT package to server.
    Thank you