Whitelisting / VIP Lists

Is it possible to direct calls to an extension based on a whitelist? The system we are coming from allows each user to set “groups” in their contact list and then determine rules for when each group of callers will be connected. Any calls not matching the whitelist are then played 20 seconds of a “ringing” WAV file and then tossed into the VM box (or a black hole VM box).

Thanks, in advance.

  • G. Deward