Why does this problem appear too early?

[jreiss (Jason Reiss)]

See gateway settings > lorawan options > schedule any time delay

Detailed discussions here

RAK2245 - Downlink rejected

And here

TTN & GPRS: dealing with the latency

Hello everyone. Ok, I got a mission here. I found several threads touching this problem but none really hit to the point, and epilogues are too vague to be of real help to the most, so I’m willing to clear up things and reach a stable point. I’ll try to be as more clear and succinct as possible, and I hope in a constructive “debate”. EQUIPMENT I have a Kerlink Wirnet Station expected to work by GPRS using SPF. It is configured and surfs as expected. Ping round-trip is about 400ms. I tried th…