1 Introduction to Information Systems Essentials for the

1 Introduction to Information Systems Essentials for the Internetworked E-Business Enterprise Eleventh Edition James A. O’Brien Chapter 6 Telecommunications and Networks Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.

James A. O’Brien Introduction to Information Systems Eleventh Edition Chapter Objectives • Identify several major developments and trends in the industries, technologies, and business applications of telecommunications and Internet technologies. • Provide examples of the business value of Internet, intranet, and extranet applications. • Identify the basic components, functions, and types of telecommunications networks used in business. • Explain the functions of major types of telecommunications network hardware, software, media, and services. Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 2

James A. O’Brien Introduction to Information Systems Eleventh Edition Trends in Telecommunications More vendors, carriers, alliances, and network Industry Trends services, accelerated by deregulation & Internet growth Technology Trends Extensive Internet, interconnected local & global digital networks, improved transmission channels Application Trends More electronic commerce, enterprise collaboration, online business operations and strategic advantage in markets Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 3

James A. O’Brien Introduction to Information Systems Eleventh Edition Telecommunications Strategic Capabilities 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. Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 4

James A. O’Brien Introduction to Information Systems Eleventh Edition Internet Applications Download and Computer Surf and E-mail E-Commerce Internet Chat and Discussion Forums Irwin/Mc. Graw-Hill Popular Uses of the Internet Transfer Protocol (FTP) and Telnet Search Engines Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 5

James A. O’Brien Introduction to Information Systems Eleventh Edition Business Value from e-Commerce Applications Increase Customer Loyalty & Retention Reduce the Cost of Doing Business Develop New Web-based Products Generate New Revenue Sources Deriving Business Value from e-Commerce Applications Develop New Markets & Channels Attract New Customers Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 6

James A. O’Brien Introduction to Information Systems Eleventh Edition Wide Area Networks Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 7

Eleventh Edition Introduction to Information Systems James A. O’Brien WAN Ontario California Norway Manitoba Belgium Wide Area Network British Columbia Pennsylvania Japan Irwin/Mc. Graw-Hill Chile Dominican Republic Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 8

Introduction to Information Systems James A. O’Brien Eleventh Edition Local Area Networks PC PC PC Shared Database and Software Packages Network Server Shared Printer PC PC Internetwork Processor to Other Networks Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved. 9

James A. O’Brien Introduction to Information Systems Eleventh Edition 10 Other E-business Networks The Internet Router Intranet Server Fire wall Extranet Fire wall Router Intranet Server Irwin/Mc. Graw-Hill Host System Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.

James A. O’Brien Introduction to Information Systems Eleventh Edition 11 Telecommunications Communication Media • • Twisted Pair Coaxial Cable Fiber Optics Terrestrial Microwave Irwin/Mc. Graw-Hill • Communication Satellites • Cellular Technologies • Wireless LAN Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.

James A. O’Brien Introduction to Information Systems Eleventh Edition 12 Network Topologies Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.

James A. O’Brien Introduction to Information Systems Eleventh Edition 13 Chapter Summary • Organizations are becoming internetworked enterprises that use the Internet, intranets, and other telecommunications networks to support ebusiness. • 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. Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.

James A. O’Brien Introduction to Information Systems Eleventh Edition 14 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). Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.

James A. O’Brien Introduction to Information Systems Eleventh Edition 15 Chapter Summary (cont) • Key telecommunications network alternatives include telecommunications media, processors, software, channels, and architectures. Irwin/Mc. Graw-Hill Copyright © 2002, The Mc. Graw-Hill Companies, Inc. All rights reserved.