Hotel Telephone Integration | PMS Interface | Hotel PBX Interface - Percipia: Parallax is a software interface that allows Hotel Telephone Integration with your property management system. This hotel PMS interface with PBX capabilities ensures smooth, efficient operations to improve guest satisfaction. Supports Opera PBX Interface, Agilysys LMS, Visual One, Versa, Hilton OnQ, Marriott Lightspeed, Infor, Stayntouch, Maestro, Jonas, and Springer-Miller SMS integrations.