Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
5 Description
6 Procedures
  6.1 Provision and withdrawal
  6.2 Normal procedures
  6.3 Exceptional procedures
7 Intercommunication considerations
  7.1 Interworking with non-ISDNs
  7.2 Interworking with private ISDNs
8 Interaction with other supplementary services
  8.1 Advice of charge services
  8.2 Call waiting
  8.3 Call hold
  8.4 Call transfer services
  8.5 Number identification services
  8.6 Closed user group
  8.7 Completion of calls to busy subscriber
  8.8 Conference services
  8.9 Direct dialling in
  8.10 Diversion services
  8.11 Freephone
  8.12 Malicious call identification
  8.13 Multiple subscriber number
  8.14 Subaddressing
  8.15 Terminal portability
  8.16 Three party
  8.17 User-user signalling
History

Abstract

Defines the stage one of the Direct Dialing In (DDI) supplementary service for the pan-European Integrated Services Digital Network (ISDN) as given by European public telecommunications operators. Specifies the base functionality where the service is given to the user via a private ISDN. Defines the interworking requirements of private ISDNs with the public ISDN. Does not specify the additional requirements where the service is given to the user via a telecommunications network that is not an ISDN, but includes interworking requirements of other networks with the public ISDN.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	NA 1