The product specification state that there is an integrated IP stack in the nRF9160 device. Unfortunately there is no more information available how to use the stack. Also there is no dedicated AT command set for interacting with an IP stack but only PDP related information. For out application we would like to use a UDP packet based transfer with DTLS encrpytion. Now we are unsure if the nRF9160 fits our needs with limited software development or whether a whole IP and DTLS stack has to be implemented in the application processor by our own.