To get around this, the blank greeting source is again your friend. The simplest method is
to set the busy greeting to active, set its source to blank, and have its after-greeting action
configured to Attempt Transfer For itself. Set its destination to be the call handler with
extension 7001. This seems odd, but this is what happens: Unity clears the transfer override
flag when it hits the busy greeting. When you loop the call back to the same call handler, it
evaluates the transfer rules and does a release transfer to 7002, as you want.
Keep in mind that this can be dangerous. We put the transfer override flag in there for ...
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