People join this course to understand how telephone networks actually connect calls and messages behind the scenes. It helps them learn how modern digital switching systems replaced old mechanical exchanges, making communication faster and more reliable. The course builds strong basic knowledge of telecom systems, which is very useful for careers in networking and communication fields. Many students also take this course to prepare for exams in electronics and communication engineering. Overall, it helps learners develop practical understanding for designing, analyzing, and troubleshooting telecom systems in real life.
You have 3+ years of hands-on experience in this field
You want to build skills in Engineering & Design, Research & Developmnet
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You're new to this field with no prior experience
You need a different specialisation outside Electrical
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Course details
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
Industry-aligned courses, expert training, hands-on learning, recognized certifications, and job opportunities-all in a flexible and supportive environment.
What learners say about this course
Boora Mahesh civil engineer
Mar 14, 2026
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Hemanth TK
Feb 27, 2026
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Bhavani S Student
Feb 22, 2026
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Jayalaxmi Sudi
Feb 15, 2026
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