1. Telecommunications, the
Internet, and Wireless
Technology
Saleh Hasan
Information Systems Course
UIBS

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. 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. 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. Electronic Commerce and Electronic
Business Technologies
 Email
 Group ware
 Voice mail
 Fax
 Teleconferencing
 Data conferencing
 Videoconferencing
 Distance learning
 E-learning

6. The New Information Technology (IT)
Infrastructure

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. What is the Internet?
Information appliance Device customized to perform few
specialized computing tasks with minimal user effort

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. 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. 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. 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