MC60 testing with MQTT +CME ERROR: invalid parameter

Technical Subjects Software Internet Protocol
1

Hi,

I am testing MC60 AT commands for MQTT.

[2021-06-29 15:21:12:431_S:] AT+QMTOPEN=0,“mqtt.thingspeak.com”,1883
[2021-06-29 15:21:12:489_R:] AT+QMTOPEN=0,“mqtt.thingspeak.com”,1883

[2021-06-29 15:21:12:537_R:] OK

[2021-06-29 15:21:14:389_R:] +QMTOPEN: 0,0

[2021-06-29 15:21:14:492_R:] DSR:1 CTS:1 (RI:0) DCD:0
[2021-06-29 15:21:21:423_S:] AT+QMTCONN=0,“MC60”
[2021-06-29 15:21:21:461_R:] AT+QMTCONN=0,“MC60”

[2021-06-29 15:21:21:493_R:] OK

[2021-06-29 15:21:22:941_R:] +QMTCONN: 0,0,0

[2021-06-29 15:22:06:950_S:] AT+QMTSUB=0,1,“MC60/sub”,1
[2021-06-29 15:22:07:001_R:] AT+QMTSUB=0,1,“MC60/sub”,1

[2021-06-29 15:22:07:032_R:] +CME ERROR: invalid parameter

Broker is working tested with MQTT.fx software. Getting error to subscribe command.
Please help…

Thanks,
RndSoft

2

Hi，
There is nothing wrong with your AT step，You can try to excute
AT+QMTSUB=0,1,“MC60/sub”,2.

3

Thanks for response.
Issue is solved.
Issue is with mqtt.thingspeak.com. broker.