L7 - Layer 7

This is also referred to as the OSI (Open Systems Interconnection) Application Layer. This layer can be divided into two different service elements, the ACSE (Application Control Service Element) which is responsible for the establishing the association between communication Application Layers and the ASE (Application Service Elements) which are used to satisfy specific contexts such as File Transfer and Network Management etc.


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

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