Oscilloquartz's new enhanced primary reference time clock (ePRTC) system enables unprecedented timing accuracy and stability even when the GNSS signal is lost. The technology provides the ideal timing source for mission-critical transport systems such as utility networks, government infrastructure and radio access networks and delivers the strict synchronization needed for LTE-A and 5G applications. Featuring the OSA 3230B ePRC atomic cesium clock connected to an Oscilloquartz clock combiner and grandmaster, the new solution offers the extremely stable frequency of a cesium clock with the UTC-traceable signal provided by GNSS. What’s more, when combined with the OSA 5430, the OSA ePRTC system is the only solution available that provides full hardware redundancy and multiple fan-out options including PTP over 10Gbit/s.