Table of Contents
1Scope
2References
3Definitions
4Abbreviations
5Description
6Operationalrequirements
6.1Provision/withdrawal
6.2Requirementsontheoriginatingnetworkside
6.3Requirementsonthedestinationnetworkside
7Codingrequirements
8Statedefinitions
8.1Userstates
8.2Networkstates
9SignallingproceduresatthecoincidentSandT
referencepoint
9.1Proceduresattheserveduser'sinterface
9.1.1Activation
9.1.2Deactivation
9.1.3Generalinterrogation
9.1.4Particularinterrogation
9.1.5Recallindication
9.1.6CCNRcallrequest
9.1.7CCNRcallestablishment
9.1.8Networkinitiateddeactivation
procedures
9.1.9BfreebutAbusyprocedure
9.1.10UserAmonitoringprocedure
9.1.11Callinformationretention
9.1.12Basiccallinformationand
compatibilitychecking
9.2Proceduresattheremoteuser'sinterface
9.2.1AcceptanceofaCCNRrequest
9.2.2CCNRqueueprocessing
9.2.3DeterminationofuserBfree
9.2.4CCNRcall
10ProceduresforinterworkingwithprivateISDNs
10.1ProceduresfortheoriginatingTreferencepoint
10.1.1CCNRavailableindication
10.1.2CCNRsupplementaryservicerequest
10.1.3Remoteuserfreeindication
10.1.4Suspendrequest
10.1.5Resumerequest
10.1.6CCNRcallestablishment
10.1.7Deactivation
10.2ProceduresforthedestinationTreferencepoint
10.2.1CCNRavailableindication
10.2.2CCNRsupplementaryservicerequest
10.2.3Remoteuserfreeindication
10.2.4Suspendrequest
10.2.5Resumerequest
10.2.6CCNRcallestablishment
10.2.7Deactivation
11Interactionswithothernetworks
11.1Interactionwithnon-ISDNs
12Interactionwithothersupplementaryservices
12.1CallWaiting(CW)
12.2ExplicitCallTransfer(ECT)
12.3ConnectedLineIdentificationPresentation
(COLP)
12.4ConnectedLineIdentificationRestriction
(COLR)
12.5CallingLineIdentificationPresentation(CLIP)
12.5.1Codingrequirements
12.5.2ProceduresatthecoincidentSandT
referencepoint
12.5.3Proceduresforinterworkingwith
privateISDNs
12.6CallingLineIdentificationRestriction(CLIR)
12.6.1Codingrequirements
12.6.2ProceduresatthecoincidentSandT
referencepoint
12.6.3Proceduresforinterworkingwith
privateISDNs
12.7ClosedUserGroup(CUG)
12.8ConferenceCalling(CONF)
12.9Direct-Dialling-In(DDI)
12.10Calldiversion(callforwarding)services
12.10.1CallForwardingBusy(CFB)
12.10.2CallForwardingNoReply(CFNR)
12.10.3CallForwardingUnconditional(CFU)
12.10.4CallDeflection(CD)
12.11LineHunting(LH)
12.12Three-PartyService(3PTY)
12.13User-to-UserSignalling(UUS)
12.14MultipleSubscriberNumber(MSN)
12.14.1Codingrequirements
12.14.2Signallingproceduresatthecoincident
SandTreferencepoint
12.14.3Proceduresfortheremotenetwork
12.15CallHold(HOLD)
12.16AdviceonCharge(AOC)
12.17Sub-addressing(SUB)
12.18TerminalPortability(TP)
12.19CompletionofCallstoBusySubscriber(CCBS)
12.19.1Codingrequirements
12.19.2Signallingproceduresatthecoincident
SandTreferencepoint
12.20MaliciousCallIdentification(MCID)
12.21ReverseCharging(REV)
12.22Multi-LevelPrecedenceandPreemption(MLPP)
12.23SupportofPrivateNumberingPlan(SPNP)
12.24InternationalTelecommunicationChargeCard
(ITCC)
12.25GlobalVirtualNetworkServices(GVNS)
12.26CallCompletiononNoReply(CCNR)
13Parametervalues(timers)
14Dynamicdescription(SDLs)
AppendixI-Signallingflows
Electronicattachment:SDLdiagramsinprocessableSDTformat Abstract
Defines the stage three of the Call Completion on No Reply (CCNR) supplementary services for the Integrated Services Digital Network (ISDN) at the T reference point or the coincident S and T reference point by means of the Digital Subscriber System No. 1 (DSS1) protocol. Stage three identifies the protocol procedures and switching functions needed to support a telecommunication service. The CCNR supplementary service enables a calling user A, encountering a destination B which does not answer the call (No Reply), to be notified, when the destination B becomes not busy after initiating an activity. If User A requires, then the network will reinitiate the cal to the specified destination B.
