I am trying to figure out how to have a user's call handling and call forwarding sequentially after calling that user's IP Phone or additional phones numbers, instead of going directly a voicemail to forward to a IVR. Is this possible? I tried using a number that is directly tied to an IVR and typed it as a forwarding number, but I got a message, which read, "This phone number cannot be the same as your account number or any additional numbers." I got the same message again, when using the unconditional call forwarding in the after-hours section. If it is not possible, is there a workaround for this?