By John G. Nellist;Elliott M. Gilbert
This article deals a simple knowing of telecommunications and the worldwide details infrastructure. It presents an easy-to-understand consultant that explains communications applied sciences in simple English. How does the net paintings? What merits do optical networks provide? what's the capability of computers? what's the function of satellites within the worldwide details street? Readers will locate nontechnical solutions to those questions, plus transparent definitions of regularly noticeable, yet usually misunderstood, phrases resembling ADSL, ISDN, HFC, DVD and others. furthermore, readers find out about the capability fiscal impression of applied sciences and notice who the foremost avid gamers are in quite a few segments.
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Extra resources for Understanding Modern Telecommunications and the Information Superhighway (Artech House Telecommunications Library)
Page 5 The Telephone With the invention and demonstration of the telephone by Alexander Graham Bell in 1876, the electrical transmission of sound became possible. Sound waves are converted to electrical waves by a microphone at the sending end, as shown in Figure 1-2. The electrical waves are transmitted over a pair of copper wires and reconverted to sound waves at the receiving end. The electric waves are analogous to the sound waves. Thus, this type of transmission is called analog transmission.
S. telecom company, capitalized at about $51 billion in 1997. Two other Baby Bells, SBC Communications and Pacific Telesis, have merged to create a $50 billion telecom giant. In 1998, SBC Communications announced it would buy Ameritech Corp. for $62 billion, the largest merger in telecommunications history. S. local telephone company. S. Telecommunications Act. This radical measure removes the regulatory barriers that have separated the telephone, cable, and broadcast industries. In particular, it allows long distance operators such as AT&T, MCI, and Sprint to compete in regional markets, and local operators like the Baby Bells to compete in the long-distance market.
The fear of competition in the new liberalized markets is the principal cause of the rash of mergers and strategic alliances in the telecommunications industry. Page xv A recent example is the merger between Bell Atlantic and Nynex. S. telecom company, capitalized at about $51 billion in 1997. Two other Baby Bells, SBC Communications and Pacific Telesis, have merged to create a $50 billion telecom giant. In 1998, SBC Communications announced it would buy Ameritech Corp. for $62 billion, the largest merger in telecommunications history.