,
Connected to 12V/24V - Connected to Cloud - PERFECT FUNCTION
NOT connected to 12V/24V - Connected to Cloud - CHECK POWER - Measure at the gateway side
NOT connected to 12V/24V - NOT connected to Cloud - CHECK POWER & ANT. If the gateway gets power and has good antenna connection, that indicates that something is wrong with the gateway itself
Connected to 12V/24V - NOT connected to Cloud - CHECK GSM ANTENNA