Telecommunicatio Ns And Networks: Management Information Systems
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1
Management Information Systems ManagIng Information Technology in the E–Business Enterprise Fifth Edition
James A. O’Brien
Chapter
rwin/McGraw-Hill
1 4
Telecommunicatio ns and Networks
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
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.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
3
Trends in Telecommunications Industry Trends
More vendors, carriers, alliances, and network 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
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
4
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.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
5
Internet Applications E-mail
E-Commerce
Internet Relay Chat
rwin/McGraw-Hill
Telnet
Popular Uses of the Internet
File Transfer Protocol (FTP)
Search Engines
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
6
Basic Components in a Telecommunications Network
1
Telecommunications Processors
4
3
5 Telecommunications Software
2
PCs, NCs, and Other Terminals
rwin/McGraw-Hill
2
Telecommunications Channels and Media
Computers
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
7
Wide Area Networks
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
8
Local Area Networks PC
PC
PC
Shared Database and Software Packages
Network Server
Shared Printer
PC
rwin/McGraw-Hill
PC
Internetwork Processor to Other Networks
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
9
Other E-Business Networks
rwin/McGraw-Hill
The Internet Router Intranet Server
Extranet
Fire wall
Fire wall
Router Intranet Server
Host System
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
10
Client/Server Networks and Network Computing Client
User Interface Application Processing
Network Server
Application Control Distributed Database
Host System Superserver Central database control Heavy duty processing
NetPC Application Server
DB Server
Browser-based User Interface
rwin/McGraw-Hill
Web OS DBMS Application Software
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
11
Telecommunications Communication Media • • • •
Twisted Pair Coaxial Cable Fiber Optics Terrestrial Microwave
rwin/McGraw-Hill
• Communication Satellites • Cellular Technologies • Wireless LAN
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
12
Telecommunications Processors and Software • Modems • Multiplexers • Internetwork Processors – – – –
Switches Routers Hubs Gateways
• Network Operating System • Telecommunications Monitor • Middleware • Network Management Software
• Fire walls
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
13
Network Topologies
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
14
Network Protocols: The OSI Architecture Application ApplicationLayer Layer Presentation PresentationLayer Layer Session SessionLayer Layer Transport TransportLayer Layer
Seven Layers of the OSI Communications Architecture
rwin/McGraw-Hill
Network NetworkLayer Layer Data DataLink LinkLayer Layer Physical PhysicalLayer Layer
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
15
The Internet’s TCP/IP Application Layer Presentation Layer Session Layer
Host-to-Host Transport Layer
Transport Layer
Internet Protocol (IP)
Network Layer
Network Interface
Data Link Layer
Physical Layer
Physical Layer
rwin/McGraw-Hill
OSI Model
Application or Process Layer
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
16
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.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
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).
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
18
Chapter Summary (cont) • Key telecommunications network alternatives include telecommunications media, processors, software, channels, and architectures.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
Management Information Systems ManagIng Information Technology in the E–Business Enterprise Fifth Edition
James A. O’Brien
Chapter
rwin/McGraw-Hill
1 4
Telecommunicatio ns and Networks
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
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.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
3
Trends in Telecommunications Industry Trends
More vendors, carriers, alliances, and network 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
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
4
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.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
5
Internet Applications E-mail
E-Commerce
Internet Relay Chat
rwin/McGraw-Hill
Telnet
Popular Uses of the Internet
File Transfer Protocol (FTP)
Search Engines
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
6
Basic Components in a Telecommunications Network
1
Telecommunications Processors
4
3
5 Telecommunications Software
2
PCs, NCs, and Other Terminals
rwin/McGraw-Hill
2
Telecommunications Channels and Media
Computers
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
7
Wide Area Networks
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
8
Local Area Networks PC
PC
PC
Shared Database and Software Packages
Network Server
Shared Printer
PC
rwin/McGraw-Hill
PC
Internetwork Processor to Other Networks
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
9
Other E-Business Networks
rwin/McGraw-Hill
The Internet Router Intranet Server
Extranet
Fire wall
Fire wall
Router Intranet Server
Host System
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
10
Client/Server Networks and Network Computing Client
User Interface Application Processing
Network Server
Application Control Distributed Database
Host System Superserver Central database control Heavy duty processing
NetPC Application Server
DB Server
Browser-based User Interface
rwin/McGraw-Hill
Web OS DBMS Application Software
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
11
Telecommunications Communication Media • • • •
Twisted Pair Coaxial Cable Fiber Optics Terrestrial Microwave
rwin/McGraw-Hill
• Communication Satellites • Cellular Technologies • Wireless LAN
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
12
Telecommunications Processors and Software • Modems • Multiplexers • Internetwork Processors – – – –
Switches Routers Hubs Gateways
• Network Operating System • Telecommunications Monitor • Middleware • Network Management Software
• Fire walls
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
13
Network Topologies
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
14
Network Protocols: The OSI Architecture Application ApplicationLayer Layer Presentation PresentationLayer Layer Session SessionLayer Layer Transport TransportLayer Layer
Seven Layers of the OSI Communications Architecture
rwin/McGraw-Hill
Network NetworkLayer Layer Data DataLink LinkLayer Layer Physical PhysicalLayer Layer
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
15
The Internet’s TCP/IP Application Layer Presentation Layer Session Layer
Host-to-Host Transport Layer
Transport Layer
Internet Protocol (IP)
Network Layer
Network Interface
Data Link Layer
Physical Layer
Physical Layer
rwin/McGraw-Hill
OSI Model
Application or Process Layer
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
16
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.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
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).
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
James A. O’Brien
Management Information Systems
Fifth Edition
18
Chapter Summary (cont) • Key telecommunications network alternatives include telecommunications media, processors, software, channels, and architectures.
rwin/McGraw-Hill
Copyright © 2002, The McGraw-Hill Companies, Inc. All rights re
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