SONET/SDH
SONET (Synchronous Optical Networking) and SDH (Synchronous Digital Hierarchy) are standardized protocols for transmitting digital data over optical fiber networks. They provide a framework for multiplexing multiple digital data streams into a single optical signal, enabling high-speed, reliable telecommunications. These technologies form the backbone of modern telecommunications infrastructure, supporting services like voice, data, and video transmission.
Developers should learn SONET/SDH when working on telecommunications, networking, or infrastructure projects that involve optical fiber systems, as they are fundamental to understanding how data is transmitted in large-scale networks. This knowledge is crucial for roles in telecom engineering, network design, or when dealing with legacy systems that still rely on these protocols for backbone connectivity.