Table of Contents
7Explicitcalltransfer
7.1Introduction
7.1.1Scope
7.1.2References
7.1.3Termsanddefinitions
7.2Description
7.2.1Generaldescription
7.2.2Specificterminology
7.2.3Qualificationsontheapplicability
totelecommunicationservices
7.2.4Statedefinitions
7.3Operationalrequirements
7.3.1Provision/withdrawal
7.3.2Requirementsontheoriginatingnetwork
side
7.3.3Requirementsinthenetwork
7.3.4Requirementsonthedestinationnetwork
side
7.4Codingrequirements
7.5Signallingrequirements
7.5.1Activation/deactivation/registration
7.5.2Invocationandoperation
7.6Interactionwithothersupplementaryservices
7.6.1Callwaiting(CW)
7.6.2Calltransferservices
7.6.3Connectedlineidentificationpresentation
(COLP)
7.6.4Connectedlineidentificationrestriction
(COLR)
7.6.5CallingLineIdentificationPresentation
(CLIP)
7.6.6CallingLineIdentificationRestriction
(CLIR)
7.6.7ClosedUserGroup(CUG)
7.6.8Conferencecalling(CONF)
7.6.9Direct-Dialling-In(DDI)
7.6.10Calldiversion(callforwarding)services
(CDIV)
7.6.11LineHunting(LH)
7.6.12Three-PartyService(3PTY)
7.6.13User-to-UserSignalling(UUS)
7.6.14MultipleSubscriberNumber(MSN)
7.6.15Callhold(HOLD)
7.6.16AdviceofCharge(AOC)
7.6.17Sub-addressing(SUB)
7.6.18TerminalPortability(TP)
7.6.19CompletionofCallstoBusySubscriber
(CCBS)
7.6.20MaliciousCallIdentification(MCID)
7.6.21Reversecharging
7.6.22Multi-LevelPrecedenceandPreemption
(MLPP)
7.6.23PrivateNumberingPlan(PNP)
7.6.24InternationalTelecommunicationCharge
card
7.7Interactionwithothernetworks
7.8Signallingflows
7.9Parametervalue(timers)
AnnexA Abstract
Specifies the essential functions, methods and messages of the ISUP protocol needed for the providing to ISDN users of the Explicit Call Transfer supplementary service, for enabling a user having had two calls, either/or incoming or outgoing, to connect together other users in the two calls into one call.
