my edge devices were tested on numerous frequency and data rate combinations and they can send and receive on all of them. However I have never been able to get any edge device to even see a command frame arriving from the gateway. If an error occurred (CRC, bad MIC, etc) my devices would say so but it is like they are not seeing the frames at all. Indeed my edge devices are set to print out that no payload was received.
After nearly a week of testing, my current hypothesis is that CS application server is turning around the enqueued commands too quickly after detecting an uplink. So quickly that my devices do not have enough time to switch to a listening mode.
I have attempted to increase the RX1 delay in the device profiles and restarted the service. This has absolutely no effect, as can be seen in the time stamps below. There is no delay reported (at least at the resolution of a second). But my RX1 is supposed to be 3 seconds.
What should I try next?