Table of Contents
FOREWORD
CONTENTS
1Introduction
2Scope
3References
4Definitions
5Abbreviations
6Descriptionofaninternationalroute
7Generalroutingprinciples
8SpecificroutingpossibilitiesthroughtheInternational
PDN
8.1Routingpossibilitiesrequiredformaintainingthe
qualityofservice
8.2Servicecharacteristicsassociatedwitharoute
8.3Specificconditionsassociatedwitharoute
9Routingproceduresapplicabletointernational
interworkingbetweenPDNsofthesametype,between
PSPDNsandISD...
9.1UseofDNICs
9.2Numberplaninterworking
9.2.1Useofescapecodestofacilitatenumberplan
interworking
9.2.2Significanceofescapecodesforrouting
9.3NumberplaninterworkingforframerelayandATM
Networks
10IdentificationofIDSEsandISDNsinvolvedinan
internationalcall
11MultipleIDSEsprovidedwithinoneCountryor
Administration
11.1Intheoriginatingordestinationcountry
11.2Inatransitcountry
12Internationalroutingplan
13Networkinformationrequiredtoenableoptimumroutings
tobeplanned
AnnexA-Termsanddefinitionsrelatedtoroutinginthe
PDN
AnnexB-TheuseofsatellitelinksinoverallPDNroutes
B.1Generalconsiderations
B.2PrinciplesineachPDN
B.2.1OriginatingnationalPDN
B.2.2Originating/transitIDSEs
B.2.3DestinationIDSE
B.2.4DestinationnationalPDN
AnnexC-Routinginformation
AnnexD-Internationalroutingplan-Examplesofroutes
D.1Introduction
D.2Examplesoftypicalroutes
D.2.1Directroute(highusageroute)
D.2.2Routesviaintermediatecountries(lowvolumes
oftraffic)
D.2.3Alternativeroute
D.2.4Routingplanincaseswheredirectroutesare
provisioned
D.2.5Routingplanincaseswheredirectroutesare
notprovisioned
D.3Rerouting Abstract
Provides high level general principles and guidelines that should be applied by Network Operators for the routing of international data traffic across interconnected public data networks. The aim is to provide network operators with the necessary information to ensure that data traffic can be effectively and economically routed across interconnected public data networks making best use of the available network resources. Although this Recommendation is focused towards packet switched data networks (such as X.25 and Frame Relay), the principles are applicable to both circuit-switched and packet-switched public data networks.
