* Convergence is confusing. Convergence is critical. Andconvergence is real. In this book, industry pundit Ray Horakdescribes how the merging of voice and data networks has evolvedand is likely to evolve as we move toward an information-basedeconomy. * Beginning with the fundamentals of communications technology, thebook grounds the reader in basic telecommunications conceptsincluding circuits (dedicated, switched and virtual), switches(circuit, packet, and frame), and the issues involved in digitaland analog transmission. * Describes the rudiments of transmission media, from twisted pairand coaxial cable to satellite and fiber-optic transmission. * Introduces the basics of voice systems, beginning with legacynetworks like key telephone systems and including PBXs, Centrex,Automatic Call Distributors, and Computer Telephony Integration(CTI). * Explains the fundamentals of data communications, including basicLAN and WAN engineering, modems and other forms of datacommunications equipment, broadband infrastructure and networkservices, and the protocols and equipment that make the globalInternet a reality. * Considers some of the emerging technologies and applications justnow gaining widespread acceptance, including wireless networks anddigital video networks, along with the economic and regulatoryforces likely to determine the shape of the networked world of the21st Century, as well as the speed with which we can expect to seeit implemented. * Previous edition sold 40,000+ copies.