BG770: AT+QMTOPEN succeeds but AT+QMTCONN fails QMTSTAT: 0,3

IoT Modules LPWA Module
1

all settings
AT+QFUPL=“AmazonRootCA1.pem”,4532,100
AT+QSSLCFG=“cacert”,2,“AmazonRootCA1.pem”
AT+QFUPL=“certificate.pem.crt”,3423,100
AT+QSSLCFG=“clientcert”,2,“certificate.pem.crt”
AT+QFUPL=“private.pem.key”,5643,100
AT+QSSLCFG=“clientkey”,2,“private.pem.key”
AT+QSSLCFG=“seclevel”,2,2
AT+QSSLCFG=“sslversion”,2,4
AT+QSSLCFG=“ciphersuite”,2,0XFFFF
AT+QSSLCFG=“ignorelocaltime”,2,1
AT+QSSLCFG=“sni”,2

ping working fine
AT+QMTOPEN=0,“abcde-ats.iot.ap-east-1.amazonaws.com”,8883
retrun +QMTOPEN: 0,0
but AT+QMTCONN=0,"12345
always return +QMTSTAT: 0,3

2

pls refer to

3

Hi Herbert thank for you response
I tried all TSL version and support all cipher, endpoint ping is working fine and the all certificate showing uploaded
AT+QFLST
+QFLST: “AmazonRootCA1.pem”,1187
+QFLST: “certificate.pem.crt”,1220
+QFLST: “private.pem.key”,1679
+QFLST: “security/”,0

but return same
AT+QMTCONN=0,“abcde”
OK

+QMTSTAT: 0,3

4

I suggest you use MQTTX or mqtt.fx for cross-validation, or provide the complete AT log