Understanding Telephone Electronics

Аннотация

This book is in part about that network and the technology that has made it possible. But it is more about revolutionary changes that are taking place in the way telephone conversations and data are taken into the network, switched, and transmitted. Some of the technology still in everyday use in the telephone network dates from the decade of the invention of the telephone in the 1870s. However, even this old and traditional business is being forced by economics, regulation, and competition to make massive changes in the way it does business and in the equipment and techniques used to provide the telephone service.