By: Dheeraj Mehta. Overview  Modem is short for modulator- demodulator  Device that is connected to a computer  Transmit data through telephone or.

Slides:

Advertisements

Similar presentations

By Taylor and Ed. Uses standard voice telephone lines Uses a modem to place a telephone call to another modem at a remote site Two major disadvantages.

Advertisements

Complete CompTIA A+ Guide to PCs, 6e

Networking: Computer Connections Chapter 7 Data Communications Send and receive information over communications lines.

Presented by: Eng. Karam Al-sofy

Networking at Home the Office and Globe

Modem Technologies ADSL Modem

By the end of this section, you will know and understand the hardware and software involved in making a LAN!

TYPES; 1. Analog Analog 2. ISDN ISDN 3. B-ISDN B-ISDN 4. DSL DSL 5. ADSL ADSL 6. SDSL SDSL 7. VDSL VDSL 8. CABLE CABLE 9. Wireless Wireless 10. T-1 lines.

Networking at Home and Abroad

Broadband local access technology

MODEMS. Introduction Modem is a device that converts the digital signal produced by computer into analog signal. The term Modem is a combination of 2.

V.90 Modems Telephone Bandwidth is Limited (Chapter 4) –Bandwidth limits speed –Limits speed to about 35 kbps –When you transmit, limited to 35 kbps 35.

Internet Connections By Bhupendra Ratha, Lecturer School of Library and Information Science Devi Ahilya University, Indore

Copyright Methods available There are a number of ways of connecting to the internet. These include: - ‘Dial-up’ - Integrated Subscriber.

Thought For The Week No Question Is A Bad Question!

Getting on the Internet

3 C H A P T E R © 2001 The McGraw-Hill Companies, Inc. All Rights Reserved1 Getting Connected  First,you need to subscribe to an Internet service provider.

Basic Computer Network

99 CHAPTER COMMUNICATIONS AND NETWORKS. © 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 9-2 Competencies Discuss connectivity, the wireless.

Computers Are Your Future © 2006 Prentice-Hall, Inc.

Department of Information Engineering1 What is a bit? –the basic unit in computer –represent a binary number : 0 and 1 a group of bits can represent any.

Internet Connection Types David Terrin July 20,2004.

Digital Subscriber Line- DSL

ISP (INTERNET SERVICE PROVIDERS).  An ISP (or Internet Service Provider) is a company that offers users a connection to the internet. WHAT IS AN ISP?

Types of Internet Connections

What is ADSL? n ADSL stands for Asymmetric Digital Subscriber Line. n Modem technology that transforms ordinary phone into high-speed digital lines for.

© 2014 Pearson IT Certification Chapter 10 – Internet Connectivity.

The Internet is an international Network of Computers.

ADSL Yanmei Tong (103801) Asymmetric Digital Subscriber Line.

Computer Concepts 2014 Chapter 6 The Internet. 6 Chapter Contents  Section A: Internet Technology  Section B: Fixed Internet Access Chapter 6: The Internet2.

Networks (Part 2) Use of a Modem The different modems Baud Rate Bandwidth Server and Client machines Network Topologies ( Bus, Ring and Star)

Networking Technologies

Networks Am I hooked up?. What is a network? A network is a group of 2 or more computers that are linked together either by wires or by a wireless means.

Introduction To Networking

Networking Types of Internet Connection

Lecture 2 Computer Communications and Networks Boriana Koleva Room: C54 Phone:

Modems Chapter 11 Release 22/10/2010powered by dj.

Telecommunications systems (Part 2) School of Business Eastern Illinois University © Abdou Illia, Spring 2007 (Week 12, Thursday 3/29/2007) T-1 Digital.

Data Communication. 2 Data Communications Data communication system components: Message Message Information (data) to be communicated. Sender Sender Device.

Modems Mostly used to connect PCs to the Internet Modulates and demodulates the signal Converts analog data into digital and vice versa V.90/V.92 56K standards.

Introduction to ICT and Programming Lecture # 3 : Internet & World Wide Web.

1 Back to Slide 7. 2 Also called dial-up access, it is both economical and slow. Using a modem connected to your PC, users can connect to the Internet.

3.7 DIGITAL SUBSCRIBER LINE After traditional modems reached their peak data rate, telephone companies developed another technology, DSL, to provide higher-speed.

DSLs Digital Subscriber Lines. Digital Subscriber Lines (DSLs) Offered by Telephone Companies –Lines to customer premises are subscriber lines, which.

MODEM J.Padmavathi. Origin of Modems The word "modem" is a contraction of the words modulator-demodulator A modem is typically used to send digital data.

Network Recap. First a recap on networks What is a stand alone PC What is a LAN Name 5 advantages of a LAN What is a WAN Name 1 advantage and 1 disadvantage.

Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Chapter 10A Connecting to the Internet.

ICT–BVF 4.1 Telecommunication Network Structure Information & Communication Technology Module:ICT–BVF–4.1 fundamentals of Telecommunication Unit:ICT–AS–4.2.

 It is the transmission of data from one place to another.  A data communication system is made up from hardware, software and communications facilities.

Connecting to the Internet.

Network Recap. First a recap on networks What is a stand alone PC What is a LAN Name 5 advantages of a LAN What is a WAN Name 1 advantage and 1 disadvantage.

ADSL CONNECTIONS. 1. How does ADSL work? The ADSL consists in the analog digital data transmission supported by the cable symmetrical copper pairs carrying.

MODEM B Y K H U S H. With the evolution of technology, world has contracted in to a small village. One single click on your computer can connect you to.

By the end of this session, you will: Understand the term Bandwidth Learn of the different ways we can communicate on a network. Know how we connect to.

Emerging Technologies and Applications Josh Baron Associate Director for Instructional Technology Center for Improved Engineering and Science Education.

Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education Chapter 7B Data Communications.

INTERNET & COMMUNICATION UNIT 2: UNIT 2: Communication by Using Information Technology, Information Sharing and Self Expression 1 by Mutlu BAYKAL.

Topic 6, Lesson 3: The Internet Computer Communications and Networking.

By: Chasity, Jamon, Clifton.  Computer networks have lots of pathways that send information back and forth.  Networks can even send the information.

Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Introduction to Networking Technologies Digital Subscriber Line (DSL)

Learning Objectives Understand what a network is and the advantages and disadvantages Know the difference between wired and wireless networks.

ISPs (Internet Service Providers). What is an ISP? An ISP (or Internet Service Provider) is a company that offers users a connection to the internet.

Types of Communication Device..

McGraw-Hill Technology Education

ISPs (Internet Service Providers)

Data Communication.

McGraw-Hill Technology Education

Presentation transcript:

By: Dheeraj Mehta

Overview  Modem is short for modulator- demodulator  Device that is connected to a computer  Transmit data through telephone or cabal lines  Modulates signals of analog types for coding  Demodulates the signals to decode the information

Special Terms/Acronyms  Modulator – transmits signals out a phone line in analog form  Demodulator – receives signals from a phone line turning them back to digital forms  ISP – Internet Service Provider  Mpbs – Mega bits per second  Bpbs – Bits per second  ADSL – Asymmetric digital subscriber line

Product History  Digital modems developed in the 1950s  Commercial Modems came into existence in the 1960s  late 1970s, modems had speeds of 300bps  300bps equivalent to Mbps  The 56K modem was invented by Dr. Brent Townshend in  Average internet speed in 1 st world countries is Mbps

How a modem works  Computer needs a modem to modulate digital signals  This will travel down phone lines  They then pass through a second modem  This will demodulate the signals back to the ISP

Specifications  Many different types of modems  Ex: USB modems, wireless modems, fax modems, direct connect modems, and on board modems  Speed is measured by Mbps  Speed of modems vary  Majority of providers support 30 Mbps with 1-6 mbps of bandwidth capacity

Future Trends  Cisco major modem company in the market  Latest Linksys EA6500 released march 2013  Very stylish and thin design  Highest commercial performance ever  Approximately $245.00

Additional Information  to test your own modem speed  Linksys is rated in the top 10 best modem company in the world (#1 is D- Link)  Dr. Brent Townshend was Canadian  Careers in the Modem Field:  Modem DSP Engineer  Wireless Modem Hardware Engineer  Modem System tester

Bibliography  "Home › Modems." Official TigerDirectca RSS. 20 May  "Modems: Frequently asked questions." Windows.microsoft.com. 20 May  "What are modems." What are modems. 20 May  "What Is a Modem?" WiseGEEK. 20 May  "What is Modem and its benefits." What is Modem and its benefits. 20 May 2013.