name: DN
full_form: Data Network
context: of a common framework for mandatory-to-use primary authentication between the UE and the network defined in 3GPP specifications (3GPP network for short) - provision of a common framework for optional-to-use secondary authentication between the UE and an external data network (DN) possibly run by a 3rd party. NOTE: An interface between the 3GPP network and the DN is defined in 3GPP specifications, but the DN itself is not. NOTE: SA2âs TS 23.501 [74], v011, clause 5.6.6 contains the following: "The user may be authenticated by the DN... Such DN authentication and/or authorization takes place for the purpose of PDU session authorization in addition to: - The 5GC access authentication handled by AMF and described in clause 5.2.1â¦ The UE provides over NAS SM information required to support user authentication by the DN." NOTE: A form of secondary authentication between the UE and an external DN has already been defined for previous generations of mobile networks for the purpose of
description: The Data Network (DN) provides data services to users, potentially operated by a third party. It functions as an external network interacting with the 3GPP network through established interfaces.
explanation: The text explicitly states that the DN is an 'external network' that interacts with the 3GPP network, fulfilling the characteristics of a distinct network entity.
section_title: 5.2.3.1.1	Key issue details
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