Next-generation telecommunications networks and critical infrastructure demand higher accuracy, stability, and scalability in time synchronization. The T840 is a carrier-grade, enhanced grandmaster clock platform that integrates ePRTC, PRTC, SSU, and IEEE 1588v2 grandmaster clock functionality. It supports PTP, NTP, SyncE, and multiple interface protocols, including BITS, IRIG-B, 1PPS, and 10MHz. The T840 features a modular design, synchronization monitoring, and interference mitigation capabilities, allowing for flexible deployment in the core network, aggregation layer, or edge nodes. Combined with built-in Syncprobe™ technology and a multi-source holdover algorithm, the T840 is the most reliable timing investment platform for the transition from traditional to IP networks.