Hello TTN communities,
What down/failed topic do in MQTT server? At the beginning, I thought when confirmed downlink failed, or timeout waiting for ACK for a certain period, the down/failed will be published to notify application server. However, it does not work that way, I have not seen any message sent in that topic. I have also tried to read the document but found no explanation.
Spec:
end device with LoRaWAN v1.0.3.
Dragino LSP08 indoor gateway.
The Things Stack v3, au1 console.
Many thanks!!!