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Lecture Business data communications: Chapter 8 - Behrouz A. Forouzan

Chapter 8 - Telephone and cable TV networks: Residential connection to the internet. After reading this chapter, the reader should: Understand the structure of the telephone network, understand the services provided by the telephone network and how these services allow us to connect to the Internet, understand the structure of the cable TV network, understand the services provided by the cable TV network and how these services allow us to connect to the Internet. | Chapter 8 Telephone and Cable TV Networks: Residential Connection to the Internet Understand the structure of the telephone network. Understand the services provided by the telephone network and how these services allow us to connect to the Internet. Understand the structure of the cable TV network Understand the services provided by the cable TV network and how these services allow us to connect to the Internet. After reading this chapter, the reader should be able to: OBJECTIVES TELEPHNONE SYSTEM 8.1 Figure 8-1 A telephone system Figure 8-2 Switching offices in a LATA Intra-LATA services are provided by local exchange carriers (LECs). Since 1996, there are two types of LECs: incumbent local exchange carriers (ILECs) and competitive local exchange carriers (CLECs). Note: Figure 8-3 POPs Figure 8-4 Rotary and touch-tone dialing Voice communication used analog signals in the past, but is now moving to digital signals. On the other hand, dialing started with digital signals (rotary) | Chapter 8 Telephone and Cable TV Networks: Residential Connection to the Internet Understand the structure of the telephone network. Understand the services provided by the telephone network and how these services allow us to connect to the Internet. Understand the structure of the cable TV network Understand the services provided by the cable TV network and how these services allow us to connect to the Internet. After reading this chapter, the reader should be able to: OBJECTIVES TELEPHNONE SYSTEM 8.1 Figure 8-1 A telephone system Figure 8-2 Switching offices in a LATA Intra-LATA services are provided by local exchange carriers (LECs). Since 1996, there are two types of LECs: incumbent local exchange carriers (ILECs) and competitive local exchange carriers (CLECs). Note: Figure 8-3 POPs Figure 8-4 Rotary and touch-tone dialing Voice communication used analog signals in the past, but is now moving to digital signals. On the other hand, dialing started with digital signals (rotary) and is now moving to analog signals (touch-tone) Note: Business Focus: History of Common Carriers in the U.S.A The history of common carriers in the United States can be divided into three eras: Before 1984 Before 1984, almost all local and long-distance services were provided by the AT&T Bell System. Between 1984 and 1996 The divestiture divided the country into more than 200 LATAs. After 1996 The Telecommunications Act of 1996 combined the different services provided by different companies under the umbrella of telecommunication services. Business Focus: Analog Voice Services Local Call Services: Normally a flat monthly rate. Toll Calls : The user is normally charged for each call. 800/888 Calls : The recipient pays for the inbound call. WATS: The organization pays for the outbound calls. The charges are less expensive than toll calls. 900 Services : These are inbound calls like 800/888, but the call is paid by the caller and is normally much more expensive than toll calls. The .