Euro863 - 870 MHz only 3 Channels (865.3 868.1 868.3) gets data

I have an 1701 gateway up and running for 1 month. In this time I got 1500 messages. After analysing the messages I see that I have only received messages on 3 frequences (865.3 868.1 868.3).
Is this normal, can the 1701 only work on 3 channels plus one for FSK?

I thing this has to do with the content of the config file (global_conf.json)
Can somebody provide an example for Germany TheThingsnetwork?

I found a solution. :star_struck:
I changed the configuration file “global_conf.json” according to https://www.thethingsnetwork.org/docs/lorawan/frequency-plans.html and now I can see that the 1701 is working on all 8 channels.