add some plastic details
(this picture from iot.semtech.com site)
Now prepare node with iM880A-L module
Clone Lora-net LoRaMac-node, change SK-iM880A example ClassA node (remove POTI, LED, add UART with debug messages, etc.) and see connection to gateway and packets on server.
Create simple MQTT client to receive online messages from TTN broker (windows console application .NET).
Port gateway to LinkItOne platform (thanks Mediatek for free platform)
To be continued...