Can I gather data from nb-iot network (several nb-iot node) through a linux machine as a gateway? I try to understand, when I mount the sixfab nb-iot node on RPi , it trurns to end-device, and sending data to Linux machne (as local-server UDP/TCP) to cloud?
Yes. NBIoT Shield turns the RPi to end-device. And you can send data to a remote or local Linux server (machine). But NBIoT technology use only UDP protocol in order to provide the feature of low power consumption.