4

On the Air

In this chapter we are going to talk a little about the cellular equipment that performs all of the tasks that were described in the last chapter; accepting the call from the mobile subscriber, extracting the information pertinent to the operations of the cellular system, and then transferring the call to the Public Telephone Switched Network (PTSN), the local telephone company. There will also be discussion about the use of mobile telephones on other means of transportation such as on trains and airplanes. In addition, we’ll learn something about paging systems and a little about what some experts say is the fastest growing communications field, wireless data. But first, the cellular system.

The meaning of the term “cell site” ...

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