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Figure 3-8 Post-Divestiture connectivity.
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oversaw the remarkable transformation of the industry until his death in January of 2000. Over time, the seven RBOCs slowly accreted to a smaller number as SBC, Pacific Bell, and Ameritech joined forces, sucking SNET into their midst in the process; NYNEX and Bell Atlantic danced around each other until they became Verizon, pulling GTE into the fray; and Qwest acquired USWest. Only Bellsouth remains as a stand-alone suitor from earlier days, and none of them are called RBOCs anymore; they re Incumbent Local Exchange Carriers (ILECs). A host of new players emerged from the proverbial woodwork including bypassers, which became Competitive Access Providers (CAPs), which in turn became Competitive Local Exchange Carriers (CLECs). Service, now the favored watchword, has given rise to Data Local Exchange Carriers (DLECs), Building Local Exchange Carriers (BLECs), Internet Service Providers (ISPs), Application Service Provider (ASPs), and LSPs. Old-timers remember when the world was fine with just BSPs. (Sorry, inside joke.) In 1996, the FCC released the Communications Act of 1996, designed to revamp the Communications Act of 1934 and make it more friendly to the services carried by network providers today. It also was designed to address the requests by Incumbent Local Exchange Carriers (ILECs) to become long-distance providers within their service areas through a 14-point checklist that they must complete before being considered for entry into the long-distance market. At the time of this writing (July 2001), none of them have complied totally with the
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demands, but movement is underway and some of them have been granted limited entry to long distance. Overall, the market continues to liberalize. Western Electric has ceased to exist, and Lucent has taken its place. The Internet has become the next great technology and service frontier, and both existing and new service providers are leaping at its promises of wealth and riches. Outside the United States, telecom companies once considered to be primitive rival the level of services offered in the United States, and in spite of the telecom meltdown that has plagued the industry of late, innovation continues and new players spring up like early morning mushrooms. Let s turn our attention now to the network itself.
The Telephone Network
Sure, I know how it works. You pick up the phone, dial the numbers, and wait. A little man grabs the words, runs down the line, and delivers them to whomever I m calling. It seems just about that simple. I mean, come on. How complicated can it be It s just a telephone call. Thus was described to me the overall process of placing a telephone call by a fellow on the street whom I once interviewed for a video I was creating about telephony. His perception of the telephone network, how it works, and what it requires to work is similar to most people s. Yet the telephone network is without question the single greatest and most complex agglomeration of technology on the planet. It extends its web seamlessly to every country on earth, providing instantaneous communication for not only voice, but for video, data, television, medical images, sports scores, music, high-quality graphics, secure military intelligence, banking information, and teleconferences. Yet it does so with almost complete transparency and with 100-percent availability. The only time its presence is noticed is when it isn t there, as happened on Second Avenue in New York, in Hinsdale, Illinois following a major central office fire, and in Chicago following a flood that isolated the Mercantile Exchange and placed hundreds of customers out of service. How the network works is something of a mystery to most people, so we re going to dissect the typical telephone network and examine its parts, complete with pictures. This section is not for the squeamish. The best way to gain an understanding of how the telephone network operates is by studying a modern railroad system. Consider Figure 3-9, which is a route map for the mythical Midland, Amarillo, and Roswell
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