TS 123 502-2019由ETSI - European Telecommunications Standards Institute 发布于 2019-03-01,并于 2019-05-07 实施。
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The present document defines the Stage 2 procedures and Network Function Services for the 5G system architecture which is described in the TS 23.501 [2] and for the policy and charging control framework which is described in TS 23.503 [20].
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