I am trying to make Unity act as a single voicemail for CUCM and mobiles. However, the mobile provider network cannot supply the redirecting number (RDNIS) on the call redirected into Unity on busy/no answer - the mobile network can only use a dedicated PSTN number per voice mailbox.
My question is: How do I route the call to the correct mailbox based on DNIS rather than RDNIS? Is it possible to have a call handler with a mask on the number. I am looking at 5000+ mailboxes.