.2 Agents and Actors in Control Layers 2.3.2.1 A Case Study 2.3.2.2 Agent Layers and Actor Layers 2.3.2.3 Common Agent Layers 2.3.2.4 Modeling the Actor Layers of an OSI Layer 2.3.3 Agents and Actors in Connectivity Layers 2.3.3.1 General Modeling Principles 2.3.3.2 Submodels of Switching Actors 2.3.3.3 Discrimination In Connectivity Layers 2.3.4 Control Structures versus Connectivity Structures 2.4 Stratum Levels Node Structures Introduction Logical Networks 3.2.1 Definitions, Parameters, and Tables 3.2.2 Simulation and Realization of Logical-Network Structures 3.3 Route Properties and Symbols 3.4 Route Type Examples 3.4.1 Physical Routes 3.4.2 Link Routes 3.4.3 Switched Routes 3.4.3.1 Introduction 3.4.3.2 Routes in Circuit-Switching Network Systems 3.4.3.3 Switched Routes in SS7 3.4.3.4 Switched Routes in the Internet 3.4.4 Socket Routes 3.4.5 Global Routes 3.4.5.1 Introduction 3.4.5.2 Global Routes in SS7 3.4.5.3 Global Routes in IP networks 3.4.5.4 Global Routes for Mobile Services Contents 4 Modeling Vertical and Horizontal Partitions 4.1 Introduction Vertical Partitioning 4.3 Horizontal Partitioning 4.3.1 Introduction 4.3.2 Refining Layer Interfaces 4.3.3 Horizontally-Partitioned Logical-Network Structures 5 Management and Traffic Systems 5.1 Introduction 5.2 Two Systems and Two planes 5.3 The Management Plane Control Point (mpCP) 5.3.1 Introduction 5.3.2 Managed Objects in mpCP 5.3.3 Connectivity Structures for mpCP 5.3.4 The mpCP Protocol and Spontaneous Events 5.4 The Management System 5.4.1 Introduction 5.4.2 The TMN Management System 5.4.3 The SNMP Management System 5.5 Using AMLn Models in Management Systems 5.6 Summary 6 Applying AMLn Introduction OSI Upper-Layer Architecture 6.2.1 Introduction 6.2.2 ACSE, the Association Control Service Element 6.2.3 ROSE, the Remote Operation Service Element 6.3 TCAP, the Transaction Capability Application Part in SS7 ATM Cell Switching 6.4.1 Introduction 6.4.2 ATM in B-ISDN 6.4.3 The ATM Stratum 6.4.4 The Adaptation Stratum Contents Appendix A: List of Acronyms an