Does Deutsche Telekom offer both open (public) and closed (private) APNs?
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).