ETS 300 137 : 20001

Foreword
1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
5 Description
6 Derivation of the functional model
  6.1 Functional model description
  6.2 Description of the functional entities
  6.3 Relationship with a basic service
7 Information flows
  7.1 Information flow diagrams
  7.2 Definition of individual information flows
8 SDL diagrams for functional entities
  8.1 FE1
  8.2 FE2
  8.3 FE3
  8.4 FE4
  8.5 FE5
  8.6 FE6
9 Functional Entity Actions (FEAs)
  9.1 FEAs of FE1
  9.2 FEAs of FE2
  9.3 FEAs of FE3
  9.4 FEAs of FE4
  9.5 FEAs of FE5
  9.6 FEAs of FE6
10 Allocation of functional entities to physical
   locations
History

Defines the stage two of the pan-European Integrated Services Digital Network (ISDN) as given by European public telecommunications operators for Closed User Group (CUG) supplementary service. Does not formally describe the relationship between the basic call and this supplementary service, but where possible the information is included for guidance. Does not specify the additional requirements where the service is given to the user via a telecommunications network that is not an ISDN. Does not specify the requirements for the allocation of defined functional entities with a private ISDN, but defines which functional entities may be allocated to a private ISDN.