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ITU Q.761:1999

ITU Q.761:1999 Signalling System No. 7 - Isdn User Part Functional Description Supplies signalling functions needed for supporting basic bearer services and supplementary services for voice and non-voice applications in an integrated services digital network.

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Table of Contents

1General
1.1Scope
1.2References
1.3Termsanddefinitions
2IntroductiontoISDNuserpart(ISUP)signalling
procedures
2.1Addresssignalling
2.2Basicprocedures
2.3Signallingmethods
2.4Interworking
2.4.1ISUPinterworking
2.4.2Interworkingwithothersignalling
systemsoruserparts
3CapabilitiessupportedbytheISDNuserpart
3.1Internationallyapplicableclass
3.2Nationaluseclass
4ServicesassumedfromtheMessageTransferPart(MTP)
4.1General
4.2Descriptionofprimitives
4.2.1Transfer
4.2.2Pause
4.2.3Resume
4.2.4Status
5End-to-endsignalling
5.1General
5.2SCCPmethodofend-to-endsignalling
5.3Pass-alongmethodtoend-to-endsignalling
6Futureenhancementsandcompatibilityprocedure
6.1Versioncompatibility
6.2Additionalcodingguidelinesforcompatibility
ofISDNUserParts
6.2.1Messages
6.2.2Parameters
AppendixI-Guidelinesforuseofinstructionindicators
I.1-Introduction
I.2-Priorityofexecution
I.3-Notification
I.4-Considerations
I.4.1-Discardingunrecognizedmessages
I.4.2-Essentialservices
I.4.3-Non-essentialservices
I.4.4-Broadband/narrow-bandinterworking
I.4.5-Passon

Abstract

Supplies signalling functions needed for supporting basic bearer services and supplementary services for voice and non-voice applications in an integrated services digital network.

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