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This parameter can be used to set whether NB-IoT, LTE-M or LoraWAN is to be used for data transmission. With LoRaWAN, the type of network join can also be defined (ABP vs. OTAA).
Some devices even extend the possible values of the parameter, e.g. for an upload via LAN. In this case, details can be found in the device-specific documentation.
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