CONTENTS

 6     Global Virtual Network Service (GVNS)
        6.1     Scope
        6.2     References
        6.3     Definitions
        6.4     Symbols and abbreviations
        6.5     Description
        6.6     Derivation of a functional model
                  6.6.1     Functional model description
                  6.6.2     Description of functional entities
                  6.6.3     Relation with a basic service
        6.7     Information flows
                  6.7.1     Information flow diagrams
                  6.7.2     Definition of individual information flows
                  6.7.3     Definition of relationships
        6.8     SDL diagrams for Functional Entities
        6.9     Functional entity actions
                  6.9.1     FEAs of FE1
                  6.9.2     FEAs of FE2
                  6.9.3     FEAs of FE3
                  6.9.4     FEAs of FE4
                  6.9.5     Functional entity – FE5
       6.10     Allocation of functional entities to physical locations