Frequently Asked Questions
- Is MQTT a standard?
- MQTT is a published wire protocol create by IBM. It is not formally standardized, but the protocol is openly published, and other companies such as Eurotech (formerly known as Arcom) have implemented the protocol in their products.
- How does MQTT relate to SCADA protocol and MQIsdp?
- The “SCADA protocol” and the “MQ Integrator SCADA Device Protocol” are both old names for what is now known as the MQ Telemetry Transport (MQTT). The protocol has also been known as “WebSphere MQTT” (WMQTT), though that name is no longer used.
- Are there standard ports for MQTT to use?
- Yes. TCP/IP port 1883 is reserved with IANA for use with MQTT. TCP/IP port 8883 is also registered, for using MQTT over SSL.