The OpenVPN client needs to be running on your PC to which the data of the SIM carrying device shall be transferred. A basic guide for installing the OpenVPN client can be found within the customer portal on the tab Configuration. The OpenVPN than establishes a connection to the 1NCE network and provides a secured data transfer between the device and the customers server.
Detailed documentation on this topic can also be found in the tutorial section of the Help Center on the 1NCE website.