G4 - Hotel/Motel Management System - Version 2.1.18.0 From reservations to financial and statistical reporting, the G4 Property Management System (PMS) will efficiently manage any size accommodation property. G4 combines advanced features with the latest technology, refining your daily operation, increasing profits and enhancing customer satisfaction. The G4 System offers fully integrated call accounting, POS and real-time Internet reservations. Contact sales@ghsglobal.net for further information and pricing.