This document discusses telecommunications, the internet, and wireless technology. It covers telecommunication system components and functions like computers, terminals, communication processors, and software. It describes digital and analog signals and different types of communication networks like star, bus, and ring networks. The document also discusses electronic commerce technologies, the new IT infrastructure, internet tools, the wireless web, and challenges of managing the new IT infrastructure.

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