Choice Billing Online Portal – Onyx Definition: Designed to streamline the overall billing process and make it easier for hotels to track and process travel agent fees. Updated on August 17, 2021 Tagged: Revenue Was this article helpful? Yes No Related Articles CPOR: Cost Per Occupied Room AV: Audio Visual (Equipment) Area of Protection (AOP) (Franchise) H.I.D.: High-Intensity Discharge (Light Bulbs and Lamps) GSA: General Services Administration FTE: Full-Time Equivalent