I am using sim7070g with 319m antenna, my goal is by using the gsm modem connect the controller to mqtt for this I have to register my modem in the network but I am unable to register my modem to network.
I verify this based on the AT commands like at+creg?
And when I connect my modem to test with AT COMMAND TESTER it does not give a valid response
But when I connect this to the PUTTY I can get the correct response.
I don’t know what may be the problem occur, if any one know the solution please bring this to my notification