Digital Switching - I

This course teaches you how modern telephone and data networks connect people and information using digital technology. It starts with the basic idea of a telephone network — how two phones get connected when you make a call — and explains what happens inside the big machines called switches that make that connection fast and accurate.You’ll learn the history and evolution of switching — from old electromechanical systems with relays and mechanical selectors, to fully digital switches that use computers and software to route calls. The course breaks down how different switching systems are designed, how calls are set up and torn down, and how networks handle many calls at once without confusion. It also introduces basic packet switching, which is the foundation of modern data networks like the Internet. Along the way you’ll explore fundamentals like signaling methods, blocking and non-blocking networks, and multistage switch designs. By the end, you’ll understand both theory and practical concepts used in real telecommunications systems.

Source: Digital Switching - I [Youtube Channel] NPTEL