TOP > main > Various Settings of the Product > The [SETTINGS] Menu > [Interface] Menu > [Network] > [Services] > [Online Services] (SOS users only) > [MQTT Protocol] (SOS users only) [MQTT Protocol] (SOS users only) Set the communication protocol of MQTT. Available only if you have selected [Real-Time] in the [SOS Mode] menu. The options are as follows: MQTT Set this to use port number 443 and 8883 to do MQTT communication. MQTT over WebSocket Set this to use port number 443 only to do MQTT communication. Back to top