Coming up in Week 3

Looking ahead to week 3 we will shift focus to the backend. What happens when you make a phone call? How does your call/message gets routed to its destination? We talk about the telephone exchange of which you are aware. We will also talk about how the Web works and how it relates to mobile devices. As you noted in the introductory lectures, access to the Web via mobiles is rapidly increasing in developing countries. It is useful to know how these two technologies, apparently not related in popular thinking, are actually working together.

Enjoy the course!