SONET/SDH

SONET (Synchronous Optical Network) and SDH (Synchronous Digital Hierarchy) are standardized protocols for transmitting large amounts of data over fiber optic networks. They organize data into fixed-size packets called frames, synchronized precisely in time, allowing multiple data streams to be combined, managed, and quickly restored if disrupted. These technologies enable efficient, high-speed internet, phone calls, and data transfer across long distances while ensuring reliability and easy network management. Essentially, SONET/SDH serve as the backbone infrastructure that carries vast digital traffic seamlessly and securely.