Viavi launches ePRTC360+ clock alternative to Cesium-accuracy holdover clock

Viavi Solutions Inc. has introduced its patent-pending Cesium-less ePRTC360+ holdover solution, offering an alternative to Cesium atomic clocks for maintaining precise timing. This new technology meets the ITU-T G.8272.1 standard for Enhanced Primary Reference Time Clocks (ePRTC) and provides resilient timing against GNSS disruptions without the drawbacks of Cesium clocks. The ePRTC360+ will be demonstrated at Mobile World Congress (MWC) Barcelona 2026.