I am using the HL7692 modem and I connect it to a 2G (GSM) operator, communication can’t seem to be established correctly. A TLS session should be opened after the SIM replies, however this never happens. When using a 4G operator, communication can be achieved without any issues. I’m using AT commands on a mangOH Green board.
AT Commands used:
AT+COPS? (Verifying that I have successfully connected to a 2G network)
These responses are received after necessary commands are completed:
I also tested 2G connectivity with a WP7607 module which was successful using the same methods and environment as above.
Any help would be appreciated.