When the contact center routes an incoming call to a VDN with an assigned VOA, the VDN routes the call to a vector that places the call in the queue. When you answer a call, you can hear the VOA message, and the contact center connects the caller to you after the message ends. If auto-answer is enabled for you, Avaya Workspaces automatically answers the call, and you can hear a zip tone followed by the VOA message before talking to the customer.