1. Chapter5 TELECOMMUNICATIONS AND NETWORKS

2. Content Networking the Enterprise Trends in Telecommunications The Business Value of Telecommunications Networks The Internet Revolution The Role of Intranets The Role of Extranets A Telecommunications Network Model Types of Telecommunications Networks Telecommunications Media Telecommunications Processors Telecommunications Software Network Topologies Network Architectures and Protocols

3. Networking the Enterprise Telecommunications and network technologies are inter-networking and revolutionizing business and society.

4. Trends in Telecommunications

5. Industry Trends

6. The Business Value of Telecommunications Networks

7. The Internet Revolution Feature of Internet: – Internet Service Providers(ISP): for responses of connect home internet to internet. – Internet Applications: most popular Internet applications are e-mail, instant messaging, browsing the sites on the World Wide Web, and participating in newsgroups and chat rooms. – Business Use of the Internet: business use of the Internet has expanded from an electronic information exchange to a broad platform for strategic business applications. – The Business Value of the Internet: It is attracting new customers with innovative marketing and products, as well as retaining present customers with improved customer service and support.

8. Examples of how a company can use the Internet for business

9. How companies are deriving business value from their e-business and e-commerce applications

10. The Role of Intranets

11. The Role of Extranets

12. A Telecommunications Network Model Five basic components in a telecommunications network: – Terminals – Telecommunications Processors – telecommunications channels – Computers – telecommunications software.

13. Types of Telecommunications Networks WAN(Wide Area Networks): Networks that cover a large city. MAN(Metropolitan Area Network): It can range from several blocks of buildings to entire cities. LAN(Local Area Networks): connect computers and other information processing devices within a limited physical area, such as an office, classroom, building, manufacturing plant, or other worksite. Virtual Private Networks: A virtual private network is a secure network that uses the Internet as its main backbone network but relies on network firewalls, encryption, and other security features of its Internet and intranet connections and those of participating organizations. Client/Server Networks: They are interconnected by local area networks and share application processing with network servers, which also manage the networks. Network Computing: concept views networks as the central computing resource of any computing environment. Peer-to-Peer Networks

14. How the LAN allows users to share hardware, software, and data resources.

15. Virtual private network protected by network firewalls

16. Telecommunications Media Wired Technologies: – Twisted-Pair Wire – Coaxial Cable(200–500 Mbps) – Fiber Optics(terabits per second) Wireless Technologies: – Terrestrial Microwave (line-of-sight, approximately 30 miles apart) – Communications Satellites (approximately 22,000 miles above the equator) – Cellular and PCS Systems – Wireless LANs – Bluetooth – The Wireless Web

17. Telecommunications Processors Modems: They convert the digital signals from a computer or transmission terminal at one end of a communications link into analog frequencies that can be transmitted over ordinary telephone lines. Inter-Network Processors: switches, routers, hubs, and gateways. Multiplexers: It is a communications processor that allows a single communications channel to carry simultaneous data transmissions from many terminals.

18. The communications processors involved in an Internet connection

19. Telecommunications Software Network management packages such as network operating systems and telecommunications monitors determine transmission priorities, route (switch) messages, poll terminals in the network, and form waiting lines (queues) of transmission requests.

20. Network Topologies

21. Network Architectures and Protocols Protocol is a standard set of rules and procedures for the control of communications in a network. Network architectures is to promote an open, simple, flexible, and efficient telecommunications environment(OSI Model) The Internet’s TCP/IP Voice over IP(Skype)

22. OSI Model