Table of Contents

Foreword
1 Scope
2 Normative references
3 Definitions
4 Symbols and abbreviations
5 Description
6 Operational requirements
  6.1 Provision and withdrawal
  6.2 Requirements on the originating network side
  6.3 Requirements on the destination network side
7 Coding requirements
8 State definitions
9 Signalling procedures at the coincident S and T
  reference point
10 Procedures for interworking with private ISDNs
  10.1 Activation, deactivation and registration
  10.2 Delivery of the DDI number
11 Interactions with other networks
12 Interactions with other supplementary services
13 Parameter values (timers)
14 Dynamic description (SDLs)
Annex A (informative): Signalling flows
History

Abstract

Specifies the stage three of the Direct Dialling In (DDI) supplementary service for the pan-European Integrated Services Digital Network (ISDN) as given by European public telecommunications operators at the T reference point or coincident S and T reference point by using the Digital Subscriber Signalling No.one (DSS1). Applies to equipment supporting the DDI supplementary service, to be attached at either side of a T reference point or coincident S and T reference points when used as an access to the public ISDN.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SPS 5
Supersedes	PRETS 300 064-1 : JUL 96