Table of Contents

Intellectual Property Rights
Foreword
1 Scope
2 References
3 Definitions, symbols and abbreviations
  3.1 Definitions
  3.2 Symbols
  3.3 Abbreviations
4 Reference model for the ETNS
  4.1 Call-related (Routing Part)
      4.1.1 Getting the ETNS Routing number (Rn)
      4.1.2 Providing the ETNS service
      4.1.3 Examples of Call Handling
  4.2 Non-call related (Management part)
      4.2.1 ETNS number assignment
      4.2.2 Obtaining Routing numbers (Rns)
      4.2.3 Distribution of ETNS Routing numbers (Rns)
5 Routing
  5.1 Routing methods
      5.1.1 Single translation
      5.1.2 Double translation
  5.2 Structure of ETNS Routing numbers
  5.3 Addressing between networks
6 Number portability within the ETNS
Annex A (Informative): Routing of calls to corporate
        networks (CN)
      A.1 Model for actors involved
      A.2 Routing methods
          A.2.1 Double translation
          A.2.2 Single translation
          A.2.3 Direct Routing
      A.3 Necessary digit analysis
Annex B (informative): Structures of the ETNS Routing numbers
      B.1 Structures of the ETNS Routing numbers
          B.1.1 Choice of Structure
      B.2 Comparison of the 2 alternatives for Routing numbers
          (Rns): National specific Rns and Network specific Rns
          B.2.1 National specific Rns
          B.2.2 Network specific Rns
Annex C (informative): Impact of Routing on Signalling
      C.1 General Implications
      C.2 Rn1 Routing method
      C.3 Rn2 Routing method
          C.3.1 Introduction
          C.3.2 E.164 number as Rn for Routing to service
                network
          C.3.3 NRN as Rn for Routing to service network
          C.3.4 Use of the ISUP procedures for GVNS
          C.3.5 Support of E.353 for INRA
      C.4 Implications of SCCP Routing
      C.5 Summary
Annex D (informative): Bibliography
History

Abstract

Describes the routing methods that shall be used for implementation of the European Telephony Numbering Space (ETNS), the alternative structures of the routing numbers and the addressing between networks.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	European Telecommunications Standards Institute
Pages
ISBN
Committee	SPAN 11
Supersedes	PREN 301 160 : MAY 98