mdi was created to fill critical gaps in network diagnostic tools for carriers migrating from SONET to IP over Optics, and to lay the groundwork for smart optical infrastructure. mdi’s in-service monitoring software is the first to provide real-time insight into fiber networks. The company’s tools let telecom systems vendors, carriers and technicians quickly and cost-effectively characterize fiber assets for network migration to 40G+, easily find impairments, and continuously manage high-speed networks.