MQTT (Message Queuing Telemetry Transport) is a broker-based publish/subscribe messaging protocol
designed to be open, simple, lightweight and easy to implement. It is designed for connections with
remote locations where a “small code footprint” is required or the network bandwidth is limited.
This document mainly introduces how to use the MQTT function of Quectel UCxx modules through AT
commands.
In this document, UCxx refers to UC15 and UC20* modules
