Introducing the industry's first ultra-compact outdoor PTP grandmaster clock with multi-band GNSS receiver and integrated antenna. Part of the OSA 5405 Series of smart synchronization devices for indoor or outdoor deployment, our new OSA 5405-MB ensures timing accuracy by eliminating the impact of ionospheric delay variation. This empowers communication service providers (CSPs) and enterprises to deliver the nanosecond precision needed for 5G fronthaul and other emerging time-sensitive applications.