I use the BC660K-GL to connect to Alibaba cloud platform, before it can connect and communicate smoothly, now I have a problem with the same approach, it shows +QMTOPEN: 0,-1
when I use AT+QIDNSGIP=0,“www.baidu.com” , it shows +QIDNSGIP: 565
pls run
AT+CIMI
AT+CGDCONT?
If you use the SIM card of China Telecom, please change it to the SIM card of China Mobile. The SIM card of China Telecom has IP restrictions and does not allow you to access any server except the IOT platform of China Telecom