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Dear All:
Some drafts described attended transfer transfer
and unattended transfer,
but no one talk about "ringing transfer", that
is, in the scenario of A transfer B to C,
the transfer transaction occurs while C is ring and A
is hearing ringback tone,
after this transfer transaction, C is ring and B
is hearing ringback tone.
Such scenario is a popular traditional PBX fuction, but
I didn't find any documents discussing this.
Could someone talk about that?
Thanks very much!
Best Regard!
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