In case of public APN, we are using a NAT service to allocate public IP addresses dynamically. In case of a private APN, devices get IP addresses from the internal IP addresses space. The IP address assignment is usually managed by Deutsche Telekom. However, the customer has the possibillity to operate his own AAA system (RADIUS forwarding) so that they can manage the IP address assignment by themself.
An open (public) APN is currrently offered for testing purposes only. Within a productivity environment only private APNs are currently being offered. Private APNs do either support IP or Non-IP. In case of Non-IP your application data from the device is packed into UDP by the APN and then sent to the user’s backend system (address of backend system is configured on the APN).
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