ONYXWorks TM with Notify IP. DVC w/NCA-2. Attention… DAL (Digital Audio Loop) Noti-Fire-NetTM. TCPIP. Digital Series Amplifiers (up to 32) Configuration of NOTIFY-IP within ONYXWorks enables paging to all audio zones or selected audio zones. Refer to the NOTIFY-IP information for further information. DAL (Digital Audio Loop) DVC (Digital Voice Command) with NFN Gateway.