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ITU E.166:1998

ITU E.166:1998 Numbering Plan Interworking For The E.164 And X.121 Numbering Plans Defines the procedures applicable for the purpose of numbering plan interworking between networks which use the E.164 numbering plan and networks which use the X.121 numbering plan. The principles for

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Table of Contents

1Introduction
2Scope
3References
4Definitions
5Abbreviations
6Interworking
6.1Numberingplans
6.1.1Escapecodes
6.1.2Prefixes
6.1.3AllocationofaDNICtoanISDNorPSTN
6.2Methods
6.2.1Dial-inmethod
6.2.2Escapecodemethod
6.2.3NPImethod
6.3Subscriberdiallingprocedures
6.3.1Singlestagedialling
6.3.2Doublestagedialling
6.4EscapecodemethodversusNPImethod
6.5Reconciliationbetweentheescapecodemethod
andtheNPImethod
6.6Internetworkimplementation
6.7Man-machineinterfaceprocedures
7Interworkingdiagrams
7.1Conventionsusedintheinterworkingdiagrams
(Figures2through28)
7.2Indexofinterworkingdiagrams
7.2.1SectionA:Scenariosforinterworking
7.2.2SectionB:Bearercapabilityinterworking
thatrequiresnonumberingplan
interworking
7.2.3SectionC:Numberingplaninterworking
7.2.4SectionD:Interworkingwithterminals
thathavedualnumbers
7.3Interworkingdiagrams
8Recommendationhistory

Abstract

Defines the procedures applicable for the purpose of numbering plan interworking between networks which use the E.164 numbering plan and networks which use the X.121 numbering plan. The principles for interworking between the E.164 and X.121 numbering plans covered in this Recommendation are illustrated by various examples of packet mode calls.

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