What you are asking for is not currently possible on the AA scripts included with CCA 2.0. Mapping a DID (or trunk) to a B-ACD destination could somehow be used here, to automatically forward to an extension after some timeout, but then you would skip the AA greeting, which you want to have. You would also need hunt groups, which you probably don't need.
The CUE AA needs user interaction. BACD doesn't. Going straight to the latter skips the former's AA greeting. Makes sense?
Bottomline, we can't do it.
Marcos Hernandez Technical Marketing Engineer Cisco Systems, Inc.
What we recommend is that you front-end your inbound calls with the CUE AA and then from then on transfer to B-ACD AA. CCA 2.0 automatically configures a "drop-through" option that puts callers directly into the queue script that sends them to the hunt groups. There is no way to disable this drop through in CCA. You would have to disable it via CLI if you want to use BACD as a proper BACD (welcome prompt, etc.).
Let me emphasize again that we recommend going with the CUE AA for the front end.