We have a lot of "virtual offices" that each require a different call handler, so I created several dummy ip phones with CFA to Unity, and made the call handlers extensions the same as the phones, then recorded greetings for each handler. If I call the phone, I get a Failsafe Message from Unity. If I assign the dummy phone's number to a subscriber instead, I hit the subscriber's greeting.
Why is this? We recently upgraded from 2.4.6 to 3.1.5 and it worked in 2.4.6 just fine. Is there some registry setting I need to change?