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ITU Y.2021:2006

ITU Y.2021:2006 Ims For Next Generation Networks Specifies how the IMS can be used in the NGN context following the fundamental principles described in [ITU-T Y.2001] and [ITU-T Y.2011] for providing the IP multimedia service component of the NGN fu

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Table of Contents

1Scope
2References
3Definitions
3.1Termsdefinedelsewhere
3.2TermsdefinedinthisRecommendation
4Abbreviations
5Conventions
6Overview
6.1IntroductiontoIMS
6.2UseofIMSinNGN
7Functionalentities
7.1Callsessioncontrolfunction(CSCF)
7.2Mediagatewaycontrolfunction(MGCF)
7.3Multimediaresourcefunctioncontroller(MRFC)
7.4Breakoutgatewaycontrolfunction(BGCF)
8Internalreferencepoints
8.1ReferencepointMGCF-CSCF(Mgreferencepoint)
8.2ReferencepointCSCF-MRFC(Mrreferencepoint)
8.3ReferencepointCSCF-CSCF(Mwreferencepoint)
8.4ReferencepointCSCF-BGCF(Mireferencepoint)
8.5ReferencepointBGCF-MGCF(Mjreferencepoint)
8.6ReferencepointBGCF-BGCF(Mkreferencepoint)
8.7ReferencepointCSCForBGCF-IBC-FE(Mxreferencepoint)
9IMSexternalreferencepoints
9.1Referencepointswithentitiesinthetransferplane
9.2ReferencepointCSCF-UE(Gmreferencepoint)
9.3Referencepointswiththeuserprofile
9.4Referencepointstoapplicationservers
9.5Referencepointstothechargingenvironment
10Referencepointstoexternalnetworks
10.1ReferencepointswiththePSTN/ISDN
10.2ReferencepointswithotherIP-basedservicecomponents
11Mappingbetween3GPPIMSfunctionalentitiesandNGN
functionalentities
AppendixI-RelevantIMSspecificationsinthecontextofthe
NGNfunctionalarchitecture
Bibliography

Abstract

Specifies how the IMS can be used in the NGN context following the fundamental principles described in [ITU-T Y.2001] and [ITU-T Y.2011] for providing the IP multimedia service component of the NGN functional architecture and describes its relationships to other service components.

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