BC95 +QMTOPEN doesn't respond correctly

IoT Modules LPWA Module
1

Hello,

I am dealing with an issue regarding my BC95-G module. When I write command AT+QMTOPEN, I sometimes get response:
OK
+QMTOPEN: 0,0

but sometimes just get no response. I wait for 85 seconds but don’t recieve any response (75 seconds is the maximum response time).

Thanks in advanced.

2

Do you perform QMTOpen by domain name？