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Appendix A - Call Control Scenarios
401
When a transferred call is disconnected, the network informs the TBCT controller
by sending a NOTIFY message with the Network Call Reference Value. The
application receives the GCEV_EXTENSION event (with ext_id =
GCIS_EXEV_NOTIFY) event.
The following figures provide line diagrams that illustrate the operation of this
feature. Figure 7 shows the invocation of TBCT with notification in which both
calls answered.
Controller
Network User
A
UserB
FACILITY
(Invoke)
UserA andB connected
FACILITY
(Return reult:
Invoke:Transfers:
active transfers.
availabletransfers:
Invoke:SetCallTab)
DISCONNECT
(CR = call#1)
RELEASE
RELEASE
COMPLETE
RELEASE
RELEASE
COMPLETE
NOTIFY
(N otification:
TransferredCall
Clearing:
CallTag:
Notification:
Transfers:
active transfers,
availabletransfers)
NOTIFY
(calltransfer active)
NOTIFY
(calltransfer active)
Calltransferred
.
.
.
TransferredCallCleared
DISCONNECT
Figure 7. TBCT Invocation with Notification (Both Calls Answered)