Hello All,

Using interop tool for AN EU863-870 device, I have a problem to run successfuly the 3.2.1 test.

1.  my device is as below:

2. For the test 3.2.1, seems to test LoRaWAN "data rate backoff" 

3. From "Table 9" above picture(from LoRaWAN® L2 1.0.4 Specification), when ADRACKCnt is bettwen 96 to 127, device paras have no changes except Txpower. But in 3.2.1, it seems need device to increase 

Spreading Factor(means to change device datarate) .

     For this different requirement, this test failed.

So, my question is, is it right for my thought? if false, what's the test aim?

Also, I will give some logs about this test and some LoRaWAN "data rate backoff" logs.

Can you please advise what I could have missed? Thanks!

In advance many thanks