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GF - Gate Function

A GF is used in the provision of SBLP (Service Based Local Policy) in order to allow or prevent flows of data based on classifiers such as destination IP address and port. The GF is typically positioned in the access network and opened/closed by a PDF (Policy Decision Function) in the core.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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