Core Insights - VIAVI Solutions Inc. has been awarded a contract by the U.S. Department of Transportation (DOT) to integrate and test its SecureTime altGNSS GEO-L service and SecurePNT 6200 resilient timing solution at VALOR and ORCID labs, which are funded by the National Telecommunications and Information Administration (NTIA) [1][3][4] Group 1: Technology and Solutions - The SecureTime GEO-L service and SecurePNT-6260 provide a GPS-independent timing solution that can switch to a satellite-based time service and precision holdover clock during jamming or spoofing incidents, ensuring no interruption to critical infrastructure [2] - The DOT's Complementary Positioning, Navigation, and Timing (CPNT) Action Plan aims to test systems that can augment or replace GPS/GNSS, ensuring accurate timing services for critical infrastructure such as data centers, financial systems, power grids, and cellular networks [3] Group 2: Strategic Partnerships and Testing - VIAVI is collaborating with DOT and NTIA to enhance resilience for critical infrastructure and support the widespread adoption of CPNT services through data collected from VALOR, ORCID, and field trials [3][4] - Upcoming government field tests will include live-sky jamming and spoofing scenarios to further validate the performance of VIAVI's GEO-L service and user equipment [4]

Core Insights - Iridium Communications Inc. has been selected by the U.S. Department of Transportation for a contract to support the deployment of Iridium's Positioning, Navigation, and Timing (PNT) services across the United States in collaboration with T-Mobile [1][2] - The partnership aims to enhance the resilience of 5G networks by providing complementary timing synchronization, which is crucial for maintaining service reliability and data integrity [2][3] Group 1 - The U.S. Department of Transportation's CPNT Action Plan focuses on evaluating commercially available PNT technologies to improve the resilience of critical infrastructure, including 5G networks [2] - T-Mobile will expand its installation of Iridium PNT receivers to 90 additional live 5G network sites, which will help protect against GPS disruptions [2][4] - Iridium's PNT signals offer sub-100-nanosecond accuracy and are significantly stronger than traditional GNSS systems, providing reliable service even indoors [4] Group 2 - The collaboration with T-Mobile highlights the effectiveness of Iridium's PNT solutions and positions them as a gold standard for timing synchronization services [3] - T-Mobile will conduct user equipment exercises at its testing range to evaluate the performance of the PNT services [3] - Iridium's low-Earth orbit satellite constellation ensures global connectivity and weather resilience for its PNT services [4][5]