HI @sergiosena, I have followed the configuration that you provided in your link,in my both TTU. One is acting as rx and the other as tx as I mentioned in the answer to @a.valero , however, I got the same answer, I don't get the sent menssage at all in the rx, still wondering why...
@JDP, thanks for your reply, I understand it, my real intention involves a LoRaWan gateway, in order to make use of LoRaWan stack, I was trying to test p2p with this device, but for now unluckly
thanks,