At start disable the GSM network, the LM940 not support that ! 3G and 4G only are support. ROS command:
/interface lte set lte1 network-mode=3g,lte
Maybe that ROS try enable GSM=2G who is not supported create you a problem.
At LM940 AT command manual
I see that commands and Telit post (https://www.telit.com/technical-forum/o ... t-allowed/
) who describe what to check:
Page 66, SIM/PIN status by
/interface lte at-chat lte1 input="AT+CPIN\?"
Page 55, Registration in network by
"enable network registration unsolicited result code"
/interface lte at-chat lte1 input="AT+CREG=1"
0 - not registered, ME is not currently searching a new operator to register to
1 - registered, home network
2 - not registered, but ME is currently searching a new operator to register to
3 - registration denied
4 - unknown
5 - registered, roaming
Wait some time and repeat by
/interface lte at-chat lte1 input="AT+CREG\?"
+CREG: 0,2 (the MODULE is in network searching state)
+CREG: 0,1 (the MODULE is registered)
Page 198, Serving Cell Information, After registration try this:
/interface lte at-chat lte1 input="AT#SERVINFO"
Good Luck and give feedback, and LOGs in file