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Making Call Transfers Using Bfv
November 2009 178
Figure 10. High-level Call Transfer using Bfv
BfvLineTransfer
BfvLineTransfer-
CapabilityQuery
LINE_XFER_
SINGLE
LINE_XFER_
ALL
False
LINE_XFER_
TWO_CHAN
False
LINE_XFER_NONE
False
True
True
True
BfvCallHold
BfvCallWaitFor
Hold
BfvCallSetup
(Enquiry)
supervised
Successful
Yes No
2nd Channel
Specified
False
BfvLineTransfer
Complete
BfvLineTransfer
Cancel
True
End
transfer_line_
state
BST_ALERTINGBST_DIAL_COMPLETE
BfvCallWaitFor
BfvCallWaitFor
Complete
BfvCallWaitFor
Alerting
Complete where
CP is ring or
connected
BST_CONNECTED