Telecommunications, the
Internet, and Wireless
Technology
Saleh Hasan
Information Systems Course
UIBS
Telecommunications System Components and
Functions
 Computers to process
information
 Terminals or any
input/output devi...
Types of Signals
Digital signal
 Discrete waveform
 Transmits data coded
into two discrete states
as 1-bits and 0-bits
...
Communication Networks
 Star Network: All computers and other devices are
connected to a central host computer
 Bus Netw...
Electronic Commerce and Electronic
Business Technologies
 Email
 Group ware
 Voice mail
 Fax
 Teleconferencing
 Data...
The New Information Technology (IT)
Infrastructure
Connectivity
 Measures how well computers and computer-based devices
communicate
Open System
 Software systems
 Operate...
What is the Internet?
Information appliance Device customized to perform few
specialized computing tasks with minimal user...
Internet Tools for Communication
 Electronic Mail (E-Mail) –Connects people worldwide
 Usenet Newsgroups –Online discuss...
The Wireless Web
 Web-based applications
 Enables users to access digital information from
the Internet
 Wireless Web S...
Web Content Management Tool
A content management system (CMS) is a system providing a
collection of procedures used to man...
The Challenge of Managing the New
Information Technology Infrastructure
 Loss of management control
 Connectivity and ap...
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Chapter2 3 telecom_networks_internet summery

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Chapter2 3 telecom_networks_internet summery

  1. 1. Telecommunications, the Internet, and Wireless Technology Saleh Hasan Information Systems Course UIBS
  2. 2. Telecommunications System Components and Functions  Computers to process information  Terminals or any input/output devices that send or receive data  Communications processors  Communications software • 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
  3. 3. Types of Signals Digital signal  Discrete waveform  Transmits data coded into two discrete states as 1-bits and 0-bits  Used for data communications Analog signal  Continuous waveform  Passes through communications medium  Used for video, audio and voice communications
  4. 4. Communication Networks  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 Local Area Networks; Require their own dedicated channels, Encompass a limited distance, Gateway, router, Network Operating System (NOS), peer-to-peer Wide Area Networks (WANs); Span large geographical distance, Consist of variety of cable, satellite, and microwave technologies, Switched lines, dedicated lines
  5. 5. Electronic Commerce and Electronic Business Technologies  Email  Group ware  Voice mail  Fax  Teleconferencing  Data conferencing  Videoconferencing  Distance learning  E-learning
  6. 6. The New Information Technology (IT) Infrastructure
  7. 7. Connectivity  Measures how well computers and computer-based devices communicate Open System  Software systems  Operate on different hardware platforms TCP / IP model; is based on OSI layers but it’s focused on the transmission. It’s a short practical model, not so theoretical than OSI. Internet Service Provider (ISP); Commercial organization with a permanent connection to Internet
  8. 8. What is the Internet? Information appliance Device customized to perform few specialized computing tasks with minimal user effort
  9. 9. Internet Tools for Communication  Electronic Mail (E-Mail) –Connects people worldwide  Usenet Newsgroups –Online discussion group  LISTSERV –First email broadcast from mailing list  Chatting –Live, conversations among people  Instant messaging -Creating private chat channels  Internet telephony (VoIP) –Two-way voice transmission among the internet
  10. 10. The Wireless Web  Web-based applications  Enables users to access digital information from the Internet  Wireless Web Standards:  Wireless Application Protocol (WAP) = Accessing information over a mobile.  WML (Wireless Markup Language) = Provides navigation support, data input, hyperlinks, text and image presentations, and forms.  Microbrowser = Web browser designed for use on mobiles  I-mode = Mobile internet similir service to WAP  Voice portals – access to information through spoken commands and voice responses
  11. 11. Web Content Management Tool A content management system (CMS) is a system providing a collection of procedures used to manage work flow in a collaborative environment. These procedures can be manual or computer-based. The procedures are designed to do the following:  Allow for a large number of people to contribute to and share stored data  Control access to data, based on user roles (defining which information users or user groups can view, edit, publish, etc.)  Aid in easy storage and retrieval of data  Reduce repetitive duplicate input  Improve the ease of report writing  Improve communication between users
  12. 12. The Challenge of Managing the New Information Technology Infrastructure  Loss of management control  Connectivity and application integration challenges  Organizational change requirements  Hidden costs of enterprise computing  Scalability, reliability, and security downtime

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