I'm using CUCM 8.0.2 and Unity Connection 7.1.3. Whenever I call the voicemail pilot it answers fine and asks me to enter my PIN. When I enter my PIN nothing else happens and after a few seconds I get a Temp Fail message on my phone. I also see that at that point I stop receiving RTP packets on my phone (although I'm still sending). It doesn't seem to be time related as I can back out to the CUC main menu and move around and it works fine. It's just whenever I log into a mailbox I get this. I have tried logging into other subscribers' mailboxes, but get the same thing.
Very basic setup. Nothing unusual or fancy.