11' Building Information Systems - PowerPoint PPT Presentation

1 / 30
About This Presentation
Title:

11' Building Information Systems

Description:

Telecommunications: Communication of information by electronic means ... Transmission: Baud, bandwidth. Essentials of Management Information Systems ... – PowerPoint PPT presentation

Number of Views:30
Avg rating:3.0/5.0
Slides: 31
Provided by: liltI
Category:

less

Transcript and Presenter's Notes

Title: 11' Building Information Systems


1
8
Chapter
TELECOMMUNICATIONS AND NETWORKS
2
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
THE TELECOMMUNICATIONS REVOLUTION
  • Telecommunications Communication of information
    by electronic means
  • The marriage of computers and communications The
    1996 Telecommunications Deregulation and Reform
    Act
  • The Information Superhighway High-speed digital
    telecommunications networks, accessible by the
    general public

3
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Telecommunications System Components
  • Computers to process information
  • Terminals or any input/output devices that send
    or receive data
  • Communications processors
  • Communications software

4
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Components of a Telecommunications System
5
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Functions of Telecommunications Systems
  • Transmit information
  • Establish interface between sender and the
    receiver
  • Route messages along most efficient paths
  • Perform elementary processing of information
  • Perform editorial tasks on data
  • Convert message speed or format
  • Control flow of information

6
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Types of Signals Analog and Digital
  • Analog signal
  • Continuous waveform
  • Passes through communications medium
  • Used for voice communications

7
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Types of Signals Analog and Digital
  • Digital signal
  • Discrete waveform
  • Transmits data coded into two discrete states as
    1-bits and 0-bits
  • Used for data communications
  • Modem
  • Translates computers digital signals into analog
    and vice versa

8
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Functions of the Modem
9
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Communications Channels
  • Twisted wire Telephone systems
  • Coaxial cable Cable television
  • Fiber optics and optical networks Dense wave
    division multiplexing (DWDM)

10
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Communications Channels
  • Wireless transmission Microwave, Satellites,
    Paging systems, Cellular telephones, Personal
    communication Services, Personal digital
    assistants, Mobile data networks
  • Transmission Baud, bandwidth

11
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Frequency Ranges for Communications Media and
Devices
12
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Amocos Satellite Transmission System
13
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS
SYSTEM
Communications Processors and Software
  • Front-end processor Manages communications for
    the host computer
  • Concentrator Collects and temporarily stores
    messages
  • Controller Supervises communication traffic
  • Multiplexer Enables single communication channel
    to carry data transmissions

14
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Network Topologies
  • Star Network All computers and other devices are
    connected to a central host computer
  • Bus Network Links a number of computers by a
    single circuit
  • Ring Network All computers are linked by a
    closed loop

15
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
A Star Network Topology
16
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
A Bus Network Topology
17
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
A Ring Network Topology
18
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Private Branch Exchanges, Local Area Networks
(LANs), and Wide Area Networks (WANs)
  • Private Branch Exchanges
  • Central switching system
  • Handle firms voice and digital communications

19
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Private Branch Exchanges, Local Area Networks
(LANs), and Wide Area Networks (WANs)
  • Local Area Networks
  • Telecommunication network
  • Require its own dedicated channels
  • Encompass a limited distance
  • Gateway, router, Network Operating System (NOS),
    peer-to-peer

20
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
A Local Area Network (LAN)
21
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Private Branch Exchanges, Local Area Networks
(LANs), and Wide Area Networks (WANs)
  • Wide Area Networks (WANs)
  • Telecommunication network
  • Span large geographical distance
  • Consist of variety of cable, satellite, and
    microwave technologies
  • Switched lines, dedicated lines

22
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Network Services and Broadband Technologies
  • Value-Added Networks (VANs)
  • Private, multipath, data-only, third-party-managed
    network
  • Other Network Services
  • Packet switching, Frame Relay, Asynchronous
    transfer mode (ATM)
  • Integrated Services Digital Network (ISDN),
    Digital subscriber line (DSL), Cable modems, T1
    line, Broadband

23
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Packed-Switched Networks and Packet Communications
24
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
COMMUNICATIONS NETWORKS
Network Convergence
  • Converged network
  • Network with technology
  • Enables voice and data to run over a single
    network
  • Unified messaging
  • System combining voice messages, email, and fax

25
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
Electronic Commerce and Electronic Business
Technologies
Electronic Mail and Groupware
  • E-mail Eliminates telephone tag and costly
    long-distance telephone charges
  • Groupware Enables work groups at different
    locations to participate in discussion forums and
    work on shared documents and projects

26
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
Electronic Commerce and Electronic Business
Technologies
Voice Mail and Fax
  • Voice mail Digitizes spoken message and
    transmits it over a network
  • Fax Digitizes and transmits documents over
    telephone lines

27
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
Electronic Commerce and Electronic Business
Technologies
Teleconferencing, Dataconferencing, and
Videoconferencing
  • Teleconferencing Ability to confer with a group
    of people simultaneously
  • Data conferencing Two or more users can edit and
    modify data files simultaneously
  • Videoconferencing Participants are able to see
    each other over video screens

28
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
Electronic Commerce and Electronic Business
Technologies
Digital Information Services, Distance Learning
and E-Learning
  • Distance learning Education or training
    delivered over a distance to individuals in one
    or more locations
  • E-learning Instruction delivered online using
    the Internet or private networks

29
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
Electronic Commerce and Electronic Business
Technologies
Electronic Data Interchange (EDI)
  • Direct computer-to-computer exchange between two
    organizations of standard business transaction
    documents

30
Essentials of Management Information
Systems Chapter 8 Telecommunications and Networks
Electronic Commerce and Electronic Business
Technologies
Electronic Data Interchange (EDI)
Write a Comment
User Comments (0)
About PowerShow.com