ITU E.172:1992
ITU E.172:1992 Isdn Routing Plan
Table of Contents
1Introductionandscope2ReferencesandrelatedRecommendations
3ISDNroutingprinciples
4Theconceptofservicedefinednetworkconnections
5Routingprocess
5.1General
5.2User-NetworkInterface
5.3Originatinglocalexchange
5.4Transitexchanges(nationalandinternational)
6Networkstructure
6.1Circuitswitchedservices
6.2Packetswitchedservices
7Informationanalysis
7.1Callingparty
7.2Incomingroute
7.3Callednumber
7.4Basictelecommunicationservicerequest
7.5Supplementaryservicerequest
7.6UserServiceinformation(encodedasUSIinSSNo).
7.7Transmissioncapability(encodedasTMRinSSNo).
7.8Signalingcapability(encodedinSSNo.7asISUP
preferenceindicator)
7.9Networkmanagementconditions
7.10TransitRPOAselection
7.11Connectionhistory
7.12Dateandtimeperiods
8RelationshipbetweenrequestedserviceandTMRvalues
8.2Bearerservices
8.3Teleservices
8.4PSTNservices
9Networkcapability(switchingandtransmission)
10Signalingcapability
10.1General
10.2SettingtheISUPpreferenceindicator
10.3InterpretationoftheISUPpreferenceindicator
11History
ANNEXASettingtheISUPpreferenceindicator
A.1Bearerserviceorteleservicerequest
A.2Supplementaryservicerequest
ANNEXBUseofSSNo.
Example1-Telephonycallwithsupplementary
servicetoExchangeB
Example2-TelephonycallwithCUGwithout
outgoingaccesstoExchangeB
Example3-TeleserviceGroup4facsimilecall
toExchangeC
Example4-Voice-banddatacalltoExchangeC
ANNEXCRoutingguidelinesfornetworkinterworking
C.1Introduction
C.2Interworkingcategories
C.3Scope
C.4Interworkingconsiderations