If the connection status is Waiting and connection mode is Connect on demand, the get plmnscan SMS will change the
connection status to Down, perform the scan, send the result through SMS and then restore the connection status to the
Waiting state.
If the connection status is Up and connection mode is Connect on demand, the get plmnscan SMS will cause the
connection to disconnect, perform the scan, send the result through SMS, and then restore the connection status to the
Waiting state unless there is a traffic which triggers a connection in which case the connection status will be set to Up.