This podcast series will explain the fundamentals of Data Communication. This podcast series will try to cover the syllabus for the subject of Data Communication and Networking which are taught in most of the universities in the engineering branches like Electronics Engineering, Electronics and Telecommunication, Information Technology and Computer science and Engineering. This subject is also useful for B.Sc. Electronics and computer science. Keywords : Data communication, Computer networks, Communication techniques, Digital Communication, Communication media, OSI Model, Reference model