I don't think I have ever setup a Nupoint that uses supervised transfer, always blind/unsupervised. Why would you want supervised transfer, the phone system should handle that routing?
That has also been my thinking - the Call Director is already "supervising" where the call lands, the transfer at the end of it is always blind for me.
For example, an office Reception - the Call Director checks all the schedules and it's only going to transfer to the Receptionist/Reception Ring Group if there is supposed to be somebody there.
If they can't answer their phone for some reason, then re-routing and voicemail will take care of it.
--> which reminds me: I've always disliked how Call Director doubles the number of mailboxes required - you need a first number with a mailbox which goes Always to voicemail to hit the Call Director, then you need a second number with a mailbox to take any messages.
Am I doing it wrong? Is there a way to use a NuPoint mailbox for both Call Director *and* taking messages?