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Telecommunications and Networks

14. Telecommunications and Networks. Chapter Objectives. Identify several major developments and trends in the industries, technologies, and applications of telecommunications and networks. Identify the basic components, functions, and types of telecommunications networks.

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Telecommunications and Networks

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  1. 14 TelecommunicationsandNetworks

  2. Chapter Objectives • Identify several major developments and trends in the industries, technologies, and applications of telecommunications and networks. • Identify the basic components, functions, and types of telecommunications networks. • Explain the functions of major types of telecommunications network hardware and media.

  3. More vendors, carriers, alliances, and network services, accelerated by deregulation & Internet growth Industry Trends Extensive Internet, interconnected local & global digital networks, improved transmission channels Technology Trends More electronic commerce, enterprise collaboration, online business operations and strategic advantage in markets Application Trends Trends in Telecommunications

  4. Overcome Geographic Barriers: Capture information about business transactions from remote locations. Overcome Time Barriers: Provide information to remote locations immediately after it is requested. Overcome Cost Barriers: Reduce the cost of more traditional means of communications. Overcome Structural Barriers: Support linkages for competitive advantage. Telecommunications Strategic Capabilities

  5. Telnet E-mail E-Commerce File Transfer Protocol (FTP) Internet Relay Chat Search Engines Internet Applications Popular Uses of the Internet

  6. Telecommunications Processors 4 1 Telecommunications Software 3 2 5 2 PCs, NCs, and Other Terminals Telecommunications Channels and Media Computers Basic Components in a Telecommunications Network

  7. Wide Area Networks

  8. Shared Database and Software Packages PC PC PC Network Server Shared Printer PC PC Internetwork Processor to Other Networks Local Area Networks

  9. The Internet Router Extranet Fire wall Intranet Server Fire wall Router Intranet Server Host System Other E-Business Networks

  10. Host System Superserver Client Network Server User Interface Application Processing Central database control Heavy duty processing Application Control Distributed Database Server Server NetPC Application DB Browser-based User Interface DBMS Web OS Application Software Client/Server Networks and Network Computing

  11. Twisted Pair Coaxial Cable Fiber Optics Terrestrial Microwave Communication Satellites Cellular Technologies Wireless LAN Telecommunications Communication Media

  12. Modems Multiplexers Internetwork Processors Switches Routers Hubs Gateways Fire walls Network Operating System Telecommunications Monitor Middleware Network Management Software Telecommunications Processors and Software

  13. Network Topologies

  14. Seven Layers of the OSI Communications Architecture Application Layer Presentation Layer Session Layer Transport Layer Network Layer Data Link Layer Physical Layer Network Protocols: The OSI Architecture

  15. Application Layer Application or Process Layer Presentation Layer Session Layer OSI Model Host-to-Host Transport Layer Transport Layer Network Layer Internet Protocol (IP) Data Link Layer Network Interface Physical Layer Physical Layer The Internet’s TCP/IP

  16. Chapter Summary • Organizations are becoming internetworked enterprises that use the Internet, intranets, and other telecommunications networks to support E-Business. • Telecommunications has entered a deregulated and fiercely competitive environment with many vendors, carriers, and services • A major trend is towards pervasive use of the Internet and its technologies to build interconnected enterprise and global networks.

  17. Chapter Summary (cont) • The major components of any telecommunications network are: • Terminals, • Telecommunications processors, • Communication channels, • Computers, and • Telecommunications software. • There are several basic types of telecomm networks, including wide area networks (WANs) and local area networks (LANs).

  18. Chapter Summary (cont) • Key telecommunications network alternatives include telecommunications media, processors, software, channels, and architectures.

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