DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SUMMER PRACTICE REPORT

Size: px
Start display at page:

Download "DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SUMMER PRACTICE REPORT"

Transcription

1 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SUMMER PRACTICE REPORT FATİH ELİHOŞ Internship Company : Bilgi Teknolojileri ve İletişim Kurumu Department : :

2 SUMMER PRACTICE REPORT (YAZ STAJI RAPORU) Student Name-Surname : FATİH ELİHOŞ Öğrencinin Adı-Soyadı Starting : Photo Staja Başladığı Tarih Completion : Stajı Tamamladığı Tarih Total Working Days : 20 Toplam İş Günü Sayısı Company : BTK (BİLGİ TEKNOLOJİLERİ VE İLETİŞİM KURUMU) Şirket Department : PİYASA GÖZETİMİ LABORATUVARI (PGL) Bölüm Address : BİLGİ TEKNOLOJİLERİ VE İLETİŞİM KURUMU YEŞİLIRMAK SOKAK NO:16 Adres Demirtepe / ANKARA TEL: FAX: Responsible (Name, Department, Phone, Fax, etc.): Sorumlu Elektrik-Elektronik Mühendisi (Ad-Soyad, Bölüm, Telefon, Fax vs.) Diploma Number of Responsible : Sorumlu Elektrik-Elektronik Mühendisinin Diploma Numarası Not: Diploma numarası olmayanlar oda sicil numaralarını da yazabilirler. Signature (İmza), (Mühür) 2

3 3 WORK / PROJECT SUMMARY 02/07/2012 WORK / PROJECT SUMMARY (İŞ ÖZETİ) Work Day (İş Günü) (tarih) Work / Project Description (İş Tanımı) BROADBAND (XDSL) SERVICES ADSL (Asymmetric Digital Subscriber Line) COMMUNICATION SATELLITE WIMAX CABLE TELEVISION GSM (Global System for Mobile Communications) SIM (Subscriber Identification Module) MOBILE DIGITAL SIGNATURE DOMAIN NAME COMPUTER SECURITY TELEPHONE DIGIT STANDARDS SPECIFIC ABSORPTION RATE (SAR) 3

4 4 WORK / PROJECT SUMMARY 02/07/2012 WORK / PROJECT SUMMARY (Continued(Devamı)) Work Day Work / Project Description RADIO FREQUENCY (RF) LOW VOLTAGE DIRECTIVE (LVD) SIGNAL TO NOISE RATIO (SNR) ANY APPLICATIONS ELECTROMAGNETIC SPECTRUM ELECTROMAGNETIC COMPATIBILITY (EMC) ELECTROMAGNETIC INTERFERENCE (EMI) TCP / IP

5 5 CONTENTS 02/07/2012 CONTENTS s 1. PREFACE 6 2. COMPANY DESCRIPTION 7 3. BROADBAND 8 4. ADSL (Asymmetric Digital Subscriber Line) 9 5. COMMUNICATION SATELLITE WIMAX CABLE TELEVISION GSM (Global System for Mobile Communications) SIM (Subscriber Identification Module) MOBILE DIGITAL SIGNATURE DOMAIN NAME COMPUTER SECURITY TELEPHONE DIGIT STANDARDS SPECIFIC ABSORPTION RATE (SAR) RADIO FREQUENCY (RF) LOW VOLTAGE DIRECTIVE (LVD) SNR (SIGNAL TO NOISE RATIO) ANY APPLICATIONS ELECTROMAGNETIC SPECTRUM ELECTROMAGNETIC COMPATIBILITY (EMC) ELECTROMAGNETIC INTERFERENCE (EMI) TCP / IP CONCLUSION REFERENCES 29 5

6 6 PREFACE 02/07/ PREFACE In every following day the need of humans increases with a large amount. Because of this reason we always require new technique. And if we want to build up new technology everyone should be educated. Our first aim as engineers is educate ourselves in the fast growing technology in the world. We need enough theoretical education more experience and more practice. By this summer course we get some practice and see an engineer s life in company, in other words these us to look from an engineer s eyes. 6

7 7 ABOUT BTK 02/07/ ABOUT BTK ( BİLGİ TEKNOLOJİLERİ VE İLETİŞİM KURUMU ) Telecommunications sector regulatory and supervisory functions to be conducted by an independent administrative authority, the Law numbered 2813 and dated amending the Telecommunications Authority was established by Law No. 4502, dated and numbered 5809, a new arrangement with the Electronic Communications Act, and name information has been subjected to technologies and Communications Authority as amended. Name of a new arrangement with the Law numbered 2813 Act on the Establishment of BTK (Bilgi Teknolojileri ve İletişim Kurulu) Act as amended. To fulfill the duties and powers given by laws to use a public legal entity, with administrative and financial autonomy, a special budget of BTK (Bilgi Teknolojileri ve İletişim Kurulu).The highest administrative institution for authorizing the Board Chairman. President is authorized to represent the organization and management. Necessary, may delegate authority to the President in writing. The service units of the institution ;legal advisor, organized as the main service directorates and directorates, regional directorates organized as advisory and support service units consist of units of local offices. BTK (Bilgi Teknolojileri ve İletişim Kurulu); including the President and Vice President consists of 7 members. Agency staff are employed under contract for the positions. Authority staff wages, benefits and other financial rights, and except for the provisions of Law No shall be subject to Law No Where the requirements imposed by the service, it does not exceed the total number ten across the country to set up regional offices. Currently there are seven regional offices. 7

8 8 BROADBAND (XDSL) SERVICES 02/07/ BROADBAND (XDSL) SERVICES The first day, I was in the network department. After the meeting with the stuff, got the general information about the department.we got information important subject is XDSL. XDSL is a general name that is used for systems that are developed to provide high-speed data and internet services through existing copper-based telephone distribution line. An XDSL use between 27 khz and 30 MHz. This range of frequency is chosen so that POTS service signals which have frequencies between 25 Hz and 12 khz aren t interrupted. The letter X of the abbreviation XDSL denotes that this service has varieties and the foresight that new types will be developed. 3.1 ADVANCED TYPES OF XDSL ADSL Asymmetric Digital Subscriber Line ADSL2 Asymmetric Digital Subscriber Line-2 ADSL2+ Asymmetric Digital Subscriber Line+ HDSL High bit rate Digital Subscriber Line HDSL2 High bit rate Digital Subscriber Line-2 ISDL ISDN Digital Subscriber Line SDSL Symmetric Digital Subscriber Line VDSL Very High bit rate Digital Subscriber Line VDSL2 Very High bit rate Digital Subscriber Line 8

9 9 ADSL 03/07/ ADSL In the second day of stuff give information about ADSL. Short for Asymmetric Digital Subscriber Line, ADSL is a type of DSL broadband communications technology used for connecting to the Internet. ADSL allows more data to be sent over existing copper telephone lines (POTS), when compared to traditional modem lines. A special filter, called a microfilter, is installed on a subscriber's telephone line to allow both ADSL and regular voice (telephone) services to be used at the same time. ADSL requires a special ADSL modem and subscribers must be in close geographical locations to the provider's central office to receive ADSL service. Typically this distance is within a radius of 2 to 2.5 miles. ADSL supports data rates of from 1.5 to 9 Mbps when receiving data (known as the downstream rate) and from 16 to 640 Kbps when sending data (known as the upstream rate). Figure :1 ADSL Structure 9

10 10 COMMUNICATIONS SATELLITE 04/07/ COMMUNICATIONS SATELLITE In the third day I got some information about Communications satellite (or COMSAT) is an artificial satellite stationed in space for the purpose of telecommunications. Modern communications satellites use a variety of orbits including geostationary orbits, For fixed (point-to-point) services, communications satellites provide a microwave radio relay technology complementary to that of communication cables. They are also used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting, for which application of other technologies, such as cable television, is impractical or impossible. Communications Satellites are usually composed of the following subsystems: Communication Payload Stabilization subsystem Power subsystem Control subsystem. 10

11 11 WIMAX 05/07/ WIMAX In 4 th day, I got some information about WIMAX (Worldwide Interoperability for Microwave Access).It is a wireless communications standard designed to provide 30 to 40 megabitper-second data rates, with the 2011 update providing up to 1 Gbit/s for fixed stations. It is a part of a fourth generation, or 4G, of wireless-communication technology. WiMax far surpasses the 30-metre wireless range of a conventional Wi-Fi local area network (LAN), offering a metropolitan area network with a signal radius of about 50 km. The bandwidth and range of WIMAX make it suitable for the following potential applications: Providing portable mobile broadband connectivity across cities and countries through a variety of devices. Providing a wireless alternative to cable and digital subscriber line (DSL) for "last mile" broadband access. Providing data, telecommunications (VoIP) and IPTV services (triple play). Providing a source of Internet connectivity as part of a business continuity plan. Figure 2 : WIMAX Scheme 11

12 12 CABLE TV 06/07/ CABLE TV In 5 th day, I asked about the Cable TV to the technician personal. Cable TV, many domestic and foreign television channels broadcasting in analog in a single center by collecting, transforming the customer receivers to perceive, then, via fiber optic and coaxial cable networks, which houses a multichannel TV system. Cable TV, satellite dish, satellite receiver, and so on. what is needed. For this reason, along with dish antennas to prevent users from visual pollution created by the service only in areas with cable TV infrastructure is caused by the taking. Cable TV in a home connected to the TV as requested. Figure 3 : Tv Channels 12

13 13 GSM 09/07/ GSM In the 6 th day of our training. GSM (Global System for Mobile Communications), originally Groupe Spécial Mobile), is a standard set developed by the European Telecommunications Standards Institute (ETSI) to describe technologies for second generation (2G) digital cellular networks. Developed as a replacement for first generation (1G) analog cellular networks, the GSM standard originally described a digital, circuit switched network optimized for full duplex voice telephony. GSM is a cellular network, which means that cell phones connect to it by searching for cells in the immediate vicinity. There are five different cell sizes in a GSM network macro, micro, pico, femto and umbrella cells. The network is structured into a number of discrete sections: The Base Station Subsystem The Network Subsystem The GPRS Core Network The Operations support system Figure 4 : Structure of a GSM 13

14 14 SIM 10/07/ SIM In the 7 th day, I got some information a subscriber identity module or subscriber identification module (SIM) is an integrated circuit that securely stores the International Mobile Subscriber Identity (IMSI) and the related key used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). There are three operating voltages for SIM cards: 5 V, 3 V and 1,8 V.The microcontrollers used for SIM cards come in different configurations. The typical ROM size is between 64 KB and 512 KB, typical RAM size is between 1 KB and 8 KB, and typical EEPROM size is between 16 KB and 512 KB. Figure 5 : SIM Cards 14

15 15 MOBILE DIGITAL SIGNATURE 11/07/ MOBILE DIGITAL SIGNATURE In the 8 th day I got some information a the mobile signature is the legal equivalent of your own wet signature, hence the term Mobile Ink, coined by sicap. The mobile signature is created by typing a secret code (i.e. your signing PIN) into the signing device (for example: your mobile phone). This secret code in combination with your key storage token (for example: SIM card) and a chosen text triggers a cryptographic algorithm to generate the (digital) signature. Each of your mobile/digital signatures can be linked to a digital certificate (an electronic record) that vouches for your real-world identity. Thus, the mobile signature is a unique feature for: - Proving your real-world identity to third parties without face-to-face communications - Making a legally-binding commitment by sending a confirmed message to another party - Solve security problems of the online world with identity confirmation. Figure 6 : Mobile Digital Signature Architecture 15

16 16 DOMAIN NAME 12/07/ DOMAIN NAME In 9 th day, we got some information Domain names are used to identify one or more IP addresses. For example, the domain name microsoft.com represents about a dozen IP addresses. Domain names are used in URLs to identify particular Web pages. For example, in the URL the domain name is pcwebopedia.com. Every domain name has a suffix that indicates which top level domain (TLD) it belongs to. There are only a limited number of such domains. For example: gov - Government agencies edu - Educational institutions org - Organizations (nonprofit) mil - Military com - Commercial business net - Network organizations ca - Canada th - Thailand tr - Turkey Because the Internet is based on IP addresses, not domain names, every Web server requires a Domain Name System (DNS) server to translate domain names into IP addresses. Figure 7 : Domain Name 16

17 17 COMPUTER SECURITY 13/07/ COMPUTER SECURITY In 10 th day, we got some information Computer security is a branch of computer technology known as information security as applied to computers and networks. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster. The term computer system security means the collective processes and mechanisms by which sensitive and valuable information and services are protected from publication, tampering or collapse by unauthorized activities. Figure 8 17

18 18 TELEPHONE DIGIT STANDARDS 16/07/ TELEPHONE DIGIT STANDARDS In 11th day, we asked digits which we always use while communication by telephone. The ITU-T E,164 international numbering schema defines the maximum number of digits of a telephone as 15. Since Turkey owns a two digits country code (+90) there are 13 more digit avaible for its national numbering schema. Türk telekom uses 10 national digits, which are divided into a three digit area code, a three digit prefix that identifies the exchange of the subscriber in this area and a four digit subscriber number that is only of local significance at the specified switching central. 894,Spare code m 895,Spare code m 896,Spare code m 897,Spare code m 898,Spare code m 899,Spare code m 90,Turkey 91,India (Republic of) 92,Pakistan (Islamic Republic of) 93,Afghanistan 94,Sri Lanka (Democratic Socialist Republic of) 95,Myanmar (Union of) 960,Maldives (Republic of) 961,Lebanon 962,Jordan (Hashemite Kingdom of) 963,Syrian Arab Republic 964,Iraq (Republic of) 965,Kuwait (State of) 966,Saudi Arabia (Kingdom of) 18

19 19 SPECIFIC ABSORPTION RATE (SAR) 17/07/ SPECIFIC ABSORPTION RATE (SAR) In 12 th day, we got information important subject is Specific absorption rate (SAR) is a measure of the rate at which energy is absorbed by the body when exposed to a radio frequency (RF) electromagnetic field; although, it can also refer to absorption of other forms of energy by tissue, including ultrasound.it is defined as the power absorbed per mass of tissue and has units of watts per kilogram (W/kg). SAR is usually averaged either over the whole body, or over a small sample volume (typically 1 g or 10 g of tissue). The value cited is then the maximum level measured in the body part studied over the stated volume or mass. SAR measures exposure to fields between 100 khz and 10 GHz. It is commonly used to measure power absorbed from mobile phones and during MRI scans. SAR can be calculated from the electric field within the tissue as: where is the sample electrical conductivity is the RMS electric field is the sample density 19

20 20 RADIO FREQUENCY (RF) 18/07/ RADIO FREQUENCY (RF) In 13 th day our department technician personal give me some information about Radio frequency (RF) is a rate of oscillation in the range of about 3 khz to 300 GHz, which corresponds to the frequency of radio waves, and the alternating currents which carry radio signals. Electric currents that oscillate at radio frequencies have special properties not shared by direct current or alternating current of lower frequencies. The energy in an RF current can radiate off a conductor into space as electromagnetic waves (radio waves); this is the basis of radio technology. RF current does not penetrate deeply into electrical conductors but flows along their surfaces; this is known as the skin effect. For this reason, when the human body comes in contact with high power RF currents it can cause superficial but serious burns called RF burns. 20

21 21 LOW VOLTAGE DIRECTIVE (LVD) 19/07/ LOW VOLTAGE DIRECTIVE (LVD) In 14 th day ; I got some information about The Low Voltage Directive (LWD) is the oldest of the New Approach Directives and deals with the safety of electrical apparatus. It applies to all apparatus running on (or generating) an electrical supply in the range volts a.c. or between 75 and 1500 volts d.c. There are a small number of exclusions from this Directive, which are generally products covered by more specific directives. The Directive has both administrative and protective requirements. Administrative requirements include CE marking the product, completing a Declaration of Conformity and compiling a Technical File. 21

22 22 SNR (SIGNAL TO NOISE RATIO) 20/07/ SNR (SIGNAL TO NOISE RATIO) In 15 th day we learn a little bit SNR. Signal-to-noise ratio is defined as the power ratio between a signal (meaningful information) and the background noise (unwanted signal). It is a logarithmic expression. Figure 9 : SNR Scheme 22

23 23 ANY APPLICATIONS 23/07/ ANY APPLICATIONS In 16 th day, we don t make any practice so we search on internet some subject. 23

24 24 ELECTROMAGNETIC SPECTRUM 24/07/ ELECTROMAGNETIC SPECTRUM In 17 th day ; we got some information about The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation.the "electromagnetic spectrum" of an object is the characteristic distribution of electromagnetic radiation emitted or absorbed by that particular object. The electromagnetic spectrum extends from low frequencies used for modern radio communication to gamma radiation at the short-wavelength (high-frequency) end, there by covering wavelengths from thousands of kilometers down to a fraction of the size of an atom. The limit for long wavelength is the size of the universe itself, while it is thought that the short wavelength limit is in the vicinity of the Planck length, although in principle the spectrum is infinite and continuous. The types of electromagnetic radiation are broadly classified into the following classes: 1. Gamma radiation 2. X-ray radiation 3. Ultraviolet radiation 4. Visible radiation 5. Infrared radiation 6. Microwave radiation 7. Radio waves Figure 10 :Electromagnetic Radiation 24

25 25 ELECTROMAGNETIC COMPATIBILITY 25/07/ ELECTROMAGNETIC COMPATIBILITY (EMC) In 18 th day we learn a little bit Electromagnetic compatibility (EMC) is the branch of electrical sciences which studies the unintentional generation, propagation and reception of electromagnetic energy with reference to the unwanted effects (Electromagnetic interference, or EMI) that such energy may induce. EMC aims to ensure that equipment items or systems will not interfere with or prevent each other's correct operation through spurious emission and absorption of EMI. EMC Testing is required to confirm that a particular device meets the required standards. It divides broadly into emissions testing and susceptibility testing. Open-air test sites, or OATS, are the reference sites in most standards. They are especially useful for emissions testing of large equipment systems.sometimes computational electromagnetics simulations are used to test virtual models.like all compliance testing, it is important that the test equipment, including the test chamber or site and any software used, be properly calibrated and maintained. Typically, a given run of tests for a particular piece of equipment will require an EMC test plan and follow-up Test report. The full test program may require the production of several such documents. 25

26 26 ELECTROMAGNETIC INTERFERENCE 26/07/ ELECTROMAGNETIC INTERFERENCE (EMI) In 19 th day ; we got some information about Electromagnetic interference (or EMI, also called radio frequency interference or RFI when in high frequency or radio frequency) is disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emitted from an external source. The International Special Committee for Radio Interference or CISPR (French acronym for "Comité International Spécial des Perturbations Radioélectriques"), which is a committee of the International Electrotechnical Commission (IEC) sets international standards for radiated and conducted electromagnetic interference. Interference tends to be more troublesome with older radio technologies such as analogue amplitude modulation, which have no way of distinguishing unwanted in-band signals from the intended signal, and the omnidirectional dipole antennas used with broadcast systems. In digital radio systems, such as Wi-Fi, error-correction techniques can be used. Spreadspectrum and frequency-hopping techniques can be used with both analogue and digital signalling to improve resistance to interference.. 26

27 27 TCP / IP 27/07/ TCP / IP In 20 th day, we asked TCP/IP which we always use internet.short for Transmission Control Protocol/Internet Protocol, the suite of communications protocols used to connect hosts on the Internet. TCP/IP uses several protocols, the two main ones being TCP and IP. TCP/IP is built into the UNIX operating system and is used by the Internet, making it the de facto standard for transmitting data over networks. TCP / IP has four abstraction layers, each with its own protocols.from lowest to highest, the layers are: 1. The link layer (commonly Ethernet). 2. The internet layer (IP). 3. The transport layer (TCP). 4. The application layer (for example HTTP) Figure 11 : TCP / IP Model 27

28 28 CONCLUSION 27/07/ CONCLUSION While the 20 training day, I learned too many things that I hadn t ever heard. I found myself in a quiet working environment. Because the system in BTK (Bilgi Teknolojileri ve İletişim Kurumu) is processing almost faultless. I got too many things in this course for the name of engineering. I saw the real work in practical and also I used my theoretical informations to understand the systems. The engineers are following up laboratory. If there is a software problem, they can repair by the computers. If there is an hardware problem in laboratory, they inform technicians. The technicians repairs it. This training showed me the possibility of processing of a system which is too important and is used to intensive. I saw the real engineering at the its place.in sum ; This work I performed helped me in gaining practical experience that served as complementary knowledge to my theoretical backround. It was challenging and fun. Finally, I completed my summer practice with good impressions and experiences. 28

29 29 REFERENCES 27/07/ REFERENCES

30 30

INTERNET CONNECTIVITY

INTERNET CONNECTIVITY INTERNET CONNECTIVITY http://www.tutorialspoint.com/internet_technologies/internet_connectivity.htm Copyright tutorialspoint.com Here in this tutorial, we will discuss how to connect to internet i.e. internet

More information

Appendix A: Basic network architecture

Appendix A: Basic network architecture Appendix A: Basic network architecture TELECOMMUNICATIONS LOCAL ACCESS NETWORKS Traditionally, telecommunications networks are classified as either fixed or mobile, based on the degree of mobility afforded

More information

ADSL or Asymmetric Digital Subscriber Line. Backbone. Bandwidth. Bit. Bits Per Second or bps

ADSL or Asymmetric Digital Subscriber Line. Backbone. Bandwidth. Bit. Bits Per Second or bps ADSL or Asymmetric Digital Subscriber Line Backbone Bandwidth Bit Commonly called DSL. Technology and equipment that allow high-speed communication across standard copper telephone wires. This can include

More information

Chapter 2 from Tanenbaum - modified. The Physical Layer. Ref: A.S. Tanenbaum, Computer Networks, 4 th Ed., Prentice-Hall, 2003, ISBN: 0-13-038488-7.

Chapter 2 from Tanenbaum - modified. The Physical Layer. Ref: A.S. Tanenbaum, Computer Networks, 4 th Ed., Prentice-Hall, 2003, ISBN: 0-13-038488-7. Chapter 2 from Tanenbaum - modified The Physical Layer Ref: A.S. Tanenbaum, Computer Networks, 4 th Ed., Prentice-Hall, 2003, ISBN: 0-13-038488-7. Data Communications over Wireless and Digital Wired Systems

More information

:-------------------------------------------------------Instructor---------------------

:-------------------------------------------------------Instructor--------------------- Yarmouk University Hijjawi Faculty for Engineering Technology Computer Engineering Department CPE-462 Digital Data Communications Final Exam: A Date: 20/05/09 Student Name :-------------------------------------------------------Instructor---------------------

More information

Telecommunications, Networks, and Wireless Computing

Telecommunications, Networks, and Wireless Computing Objectives Telecommunications, Networks, and Wireless Computing 1. What are the features of a contemporary corporate telecommunications system? On what major technology developments are they based? 2.

More information

Public Switched Telephone System

Public Switched Telephone System Public Switched Telephone System Structure of the Telephone System The Local Loop: Modems, ADSL Structure of the Telephone System (a) Fully-interconnected network. (b) Centralized switch. (c) Two-level

More information

Narrowband and Broadband Access Technologies

Narrowband and Broadband Access Technologies Computer Networks and Internets, 5e Chapters 12 and 16 Access and Interconnection Technologies (slidesets abridged/combined) By Douglas Comer Modified from the lecture slides of Lami Kaya (LKaya@ieee.org)

More information

Data Transmission. Data Communications Model. CSE 3461 / 5461: Computer Networking & Internet Technologies. Presentation B

Data Transmission. Data Communications Model. CSE 3461 / 5461: Computer Networking & Internet Technologies. Presentation B CSE 3461 / 5461: Computer Networking & Internet Technologies Data Transmission Presentation B Kannan Srinivasan 08/30/2012 Data Communications Model Figure 1.2 Studying Assignment: 3.1-3.4, 4.1 Presentation

More information

Broadband 101: Installation and Testing

Broadband 101: Installation and Testing Broadband 101: Installation and Testing Fanny Mlinarsky Introduction Today the Internet is an information superhighway with bottlenecks at every exit. These congested exits call for the deployment of broadband

More information

A General Glossary of Telecommunications Terminology

A General Glossary of Telecommunications Terminology 1 A General Glossary of Telecommunications Terminology Analog Electronic transmission of voice and data accomplished by adding signals of varying frequency, or amplitude, to carrier waves of a given frequency

More information

Broadband Access Technologies

Broadband Access Technologies Broadband Access Technologies Chris Wong Communications Engineering Sector Analysis & Reporting Branch International Training Program 23 October 2007 Presentation Outline What is broadband? What are the

More information

Getting Broadband. FCC Consumer Facts. What Is Broadband?

Getting Broadband. FCC Consumer Facts. What Is Broadband? Getting Broadband FCC Consumer Facts What Is Broadband? Broadband or high-speed Internet access allows users to access the Internet and Internetrelated services at significantly higher speeds than those

More information

Discovering Computers 2008. Chapter 9 Communications and Networks

Discovering Computers 2008. Chapter 9 Communications and Networks Discovering Computers 2008 Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the the components required for for successful communications Identify various sending and receiving devices

More information

Cable subscribers are connected directly to high speed lines while ADSL subscribers are connected directly to medium speed lines

Cable subscribers are connected directly to high speed lines while ADSL subscribers are connected directly to medium speed lines ADSL vs Cable Cable subscribers are connected directly to high speed lines while ADSL subscribers are connected directly to medium speed lines Cable subscribers share the line connecting them to neighbourhood

More information

Preview of Period 3: Electromagnetic Waves Radiant Energy II

Preview of Period 3: Electromagnetic Waves Radiant Energy II Preview of Period 3: Electromagnetic Waves Radiant Energy II 3.1 Radiant Energy from the Sun How is light reflected and transmitted? What is polarized light? 3.2 Energy Transfer with Radiant Energy How

More information

Residential Broadband: Technologies for High-Speed Access To Homes

Residential Broadband: Technologies for High-Speed Access To Homes Residential Broadband: Technologies for High-Speed Access To Homes Columbus, OH 43210 Jain@CIS.Ohio-State.Edu http://www.cis.ohio-state.edu/~jain/cis788-97/ Email questions to mbone@netlab.ohio-state.edu

More information

ECE 510 -- Chapter 1

ECE 510 -- Chapter 1 ECE 510 -- Chapter 1 Definition: Digital Subscriber Line (DSL) Public network technology that delivers high bandwidth over conventional copper wiring at limited distances. There are four major types of

More information

Residential Broadband: Technologies for High-Speed Access To Homes

Residential Broadband: Technologies for High-Speed Access To Homes Residential Broadband: Technologies for High-Speed Access To Homes The Ohio State University Columbus, OH 43210-1277 1277 http://www.cse.ohio-state.edu/~jain/ 1 Overview 56 kbps Modems, ISDN ADSL, VDSL

More information

Chapter 9A. Network Definition. The Uses of a Network. Network Basics

Chapter 9A. Network Definition. The Uses of a Network. Network Basics Chapter 9A Network Basics 1 Network Definition Set of technologies that connects computers Allows communication and collaboration between users 2 The Uses of a Network Simultaneous access to data Data

More information

(Refer Slide Time: 2:10)

(Refer Slide Time: 2:10) Data Communications Prof. A. Pal Department of Computer Science & Engineering Indian Institute of Technology, Kharagpur Lecture-12 Multiplexer Applications-1 Hello and welcome to today s lecture on multiplexer

More information

HIGH CAPACITY DSL-SYSTEMS

HIGH CAPACITY DSL-SYSTEMS Electronic Communications Committee (ECC) within the European Conference of Postal and Telecommunications Administrations (CEPT) HIGH CAPACITY DSL-SYSTEMS Oulu, March 2006 Page 2 EXECUTIVE SUMMARY In this

More information

EMC STANDARDS STANDARDS AND STANDARD MAKING BODIES. International. International Electrotechnical Commission (IEC) http://www.iec.

EMC STANDARDS STANDARDS AND STANDARD MAKING BODIES. International. International Electrotechnical Commission (IEC) http://www.iec. EMC STANDARDS The EMC standards that a particular electronic product must meet depend on the product application (commercial or military) and the country in which the product is to be used. These EMC regulatory

More information

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

Computers Are Your Future. 2006 Prentice-Hall, Inc. Computers Are Your Future 2006 Prentice-Hall, Inc. Computers Are Your Future Chapter 3 Wired and Wireless Communication 2006 Prentice-Hall, Inc Slide 2 What You Will Learn... ü The definition of bandwidth

More information

Chapter 9 Using Telephone and Cable Networks for Data Transmission

Chapter 9 Using Telephone and Cable Networks for Data Transmission 9-11 TELEPHONE NETWORK Chapter 9 Using Telephone and Cable Networks for Data Transmission 1 McGraw-Hill Copyright The McGraw-Hill Companies, Inc. Permission required The for reproduction McGraw-Hill or

More information

Analysis of xdsl Technologies

Analysis of xdsl Technologies International Journal of Electronics and Computer Science Engineering 897 Available Online at www.ijecse.org ISSN- 2277-1956 Analysis of xdsl Technologies Dimple Saproo 1, Megha Goyal 2, Asha Bhagashra

More information

Chapter 9 Communications and Networks

Chapter 9 Communications and Networks Chapter 9 Communications and Networks Chapter 9 Objectives Discuss the components required for successful communications Identify various sending and receiving devices Explain the purpose of communications

More information

Connection Services. Hakim S. ADICHE, MSc

Connection Services. Hakim S. ADICHE, MSc Connection Services Hakim S. ADICHE, MSc adiche@ccse.kfupm.edu.sa Department of Computer Engineering King Fahd University of Petroleum and Minerals Dhahran, Saudi Arabia Connection Services Different connectivity

More information

Objectives. Remote Connection Options. Teleworking. Connecting Teleworkers to the Corporate WAN. Providing Teleworker Services

Objectives. Remote Connection Options. Teleworking. Connecting Teleworkers to the Corporate WAN. Providing Teleworker Services ITE I Chapter 6 2006 Cisco Systems, Inc. All rights reserved. Cisco Public 1 Objectives Providing Teleworker Services Describe the enterprise requirements for providing teleworker services Explain how

More information

Broadband Technology Clinic. Burlington Telecom Advisory Board

Broadband Technology Clinic. Burlington Telecom Advisory Board Broadband Technology Clinic Burlington Telecom Advisory Board 1 What are the Defining Characteristics of a Broadband Service? Speed - Throughput capability both down and upstream Performance - Latency

More information

Chapter 9. Communications and Networks. McGraw-Hill/Irwin. Copyright 2008 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 9. Communications and Networks. McGraw-Hill/Irwin. Copyright 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 9 Communications and Networks McGraw-Hill/Irwin Copyright 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Competencies (Page 1 of 2) Discuss connectivity, the wireless revolution,

More information

XDSL and DSLAM Access Technologies

XDSL and DSLAM Access Technologies XDSL and DSLAM Access Technologies Abstract What are the differences between the different forms of xdsl technology, such as ADSL and HDSL? How are they implemented. What are the limitations? What are

More information

Economic Research & Analysis. CostQuest Associates (CQA) Bandwidth Assessment Tool Glossary of Terms: Words & Acronyms June 2014

Economic Research & Analysis. CostQuest Associates (CQA) Bandwidth Assessment Tool Glossary of Terms: Words & Acronyms June 2014 CostQuest Associates (CQA) Economic Research & Analysis Bandwidth Assessment Tool Glossary of Terms: Words & Acronyms June 2014 CostQuest Associates (CQA) Economic Research & Analysis For further information

More information

Black Box Explains: DSL

Black Box Explains: DSL Black Box Explains: DSL History It was realized as early as the late eighties, early nineties, that conventional data transmission systems did not meet the requirements of the growing internet community

More information

ADSL part 2, Cable Internet, Cellular

ADSL part 2, Cable Internet, Cellular ADSL part 2, Cable Internet, Cellular 20 June 2016 Lecture 12 20 June 2016 SE 428: Advanced Computer Networks 1 Topics for Today ADSL Cable Internet Cellular Radio Networks 20 June 2016 SE 428: Advanced

More information

Chapter 1: roadmap. Access networks and physical media

Chapter 1: roadmap. Access networks and physical media Chapter 1: roadmap 1.1 What is the nternet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 nternet structure and SPs 1.6 elay & loss in packet-switched networks 1.7 Protocol

More information

TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE WORKING GROUP ON COMMON CONNECTION STANDARDS (CCS)

TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE WORKING GROUP ON COMMON CONNECTION STANDARDS (CCS) TELECOMMUNICATIONS STANDARDS ADVISORY COMMITTEE WORKING GROUP ON COMMON CONNECTION STANDARDS (CCS) Overview of Very High Speed Digital Subscriber Line 2 (VDSL2) 甚 高 速 數 碼 用 戶 線 路 2 的 概 覽 Introduction ADSL

More information

wireless triple play network - www.air-tv.net

wireless triple play network - www.air-tv.net an innovative and integrated wireless network aimed at offering Triple Play services Introduction AIR is a wireless network that can be used to offer Triple Play economically, i.e. with a typical pay-back

More information

EECC694 - Shaaban. Transmission Channel

EECC694 - Shaaban. Transmission Channel The Physical Layer: Data Transmission Basics Encode data as energy at the data (information) source and transmit the encoded energy using transmitter hardware: Possible Energy Forms: Electrical, light,

More information

Chapter 5. Data Communication And Internet Technology

Chapter 5. Data Communication And Internet Technology Chapter 5 Data Communication And Internet Technology Purpose Understand the fundamental networking concepts Agenda Network Concepts Communication Protocol TCP/IP-OSI Architecture Network Types LAN WAN

More information

Intel System Engineers Documents. DSL General Overview

Intel System Engineers Documents. DSL General Overview Intel System Engineers Documents DSL General Overview Alex Lattanzi SC LAR Whatt IIs Brroadband? Broadband describes a number of different technologies that deliver digital data to homes and businesses

More information

Broadband Definitions and Acronyms

Broadband Definitions and Acronyms The New Mexico Broadband Program Broadband Definitions and Acronyms Version 1, April 2013 Prepared for: The New Mexico Broadband Program NM Department of Information Technology http://www.doit.state.nm.us/broadband/

More information

TECHNICAL SPECIFICATION FOR BROADBAND WIRELESS ACCESS (BWA) EQUIPMENT

TECHNICAL SPECIFICATION FOR BROADBAND WIRELESS ACCESS (BWA) EQUIPMENT TECHNICAL SPECIFICATION FOR BROADBAND WIRELESS ACCESS (BWA) EQUIPMENT Suruhanjaya Komunikasi dan Multimedia Malaysia Off Pesiaran Multimedia, 63000 Cyberjaya, Selangor Darul Ehsan, Malaysia Copyright of

More information

Think! Think! Data communications. Long-Distance. Modems: to analog and back. Transmission Media. The last mile is the hardest for digital information

Think! Think! Data communications. Long-Distance. Modems: to analog and back. Transmission Media. The last mile is the hardest for digital information Data communications Think! Think!?? What makes it possible to communicate from point A to point B?? Long-Distance Transmission Media If you place a call outside the local transport area, an interchange

More information

VDSL (VERY HIGH DATA BIT RATE DIGITAL SUBSCRIBER LINE)

VDSL (VERY HIGH DATA BIT RATE DIGITAL SUBSCRIBER LINE) 1 VDSL (VERY HIGH DATA BIT RATE DIGITAL SUBSCRIBER LINE) INTRODUCTION 1. Recent events in the telecommunications environment are giving rise to a new class of service providers, setting the stage for how

More information

Unit of Learning # 2 The Physical Layer. Redes de Datos Sergio Guíñez Molinos sguinez@utalca.cl 1-2009

Unit of Learning # 2 The Physical Layer. Redes de Datos Sergio Guíñez Molinos sguinez@utalca.cl 1-2009 Unit of Learning # 2 The Physical Layer Redes de Datos Sergio Guíñez Molinos sguinez@utalca.cl 1-2009 The Theoretical Basis for Data Communication Sergio Guíñez Molinos Redes de Computadores 2 The Theoretical

More information

The range of RF spans 3 KHz (3000 Hz) to 300 GHz (300 million Hz)

The range of RF spans 3 KHz (3000 Hz) to 300 GHz (300 million Hz) 1 2 The range of RF spans 3 KHz (3000 Hz) to 300 GHz (300 million Hz) Frequencies of RF devices range from the low frequency AM broadcasts (80 MHz) to higher frequency mobile phones (1900 MHz) smart meters

More information

THE BCS PROFESSIONAL EXAMINATIONS BCS Level 5 Diploma in IT. October 2009 EXAMINERS' REPORT. Computer Networks

THE BCS PROFESSIONAL EXAMINATIONS BCS Level 5 Diploma in IT. October 2009 EXAMINERS' REPORT. Computer Networks THE BCS PROFESSIONAL EXAMINATIONS BCS Level 5 Diploma in IT October 2009 EXAMINERS' REPORT Computer Networks General Comments The responses to questions were of marginally better quality than April 2009

More information

TECHNICAL SPECIFICATION FOR CORDLESS TELEPHONE SYSTEMS

TECHNICAL SPECIFICATION FOR CORDLESS TELEPHONE SYSTEMS TECHNICAL SPECIFICATION FOR CORDLESS TELEPHONE SYSTEMS Suruhanjaya Komunikasi dan Multimedia Malaysia Off Pesiaran Multimedia, 63000 Cyberjaya, Selangor Darul Ehsan, Malaysia Copyright of SKMM, 2007 FOREWORD

More information

DSL Variations. NEXTEP Broadband White Paper. Broadband Networks Group. Definitions and differences of Digital Subscriber Line variations.

DSL Variations. NEXTEP Broadband White Paper. Broadband Networks Group. Definitions and differences of Digital Subscriber Line variations. NEXTEP Broadband White Paper DSL Variations Definitions and differences of Digital Subscriber Line variations. A NEXTEP Broadband White Paper May 2001 Broadband Networks Group DSL Variations EXECUTIVE

More information

COMPUTERS ARE YOUR FUTURE CHAPTER 8 WIRED & WIRELESS COMMUNICATION

COMPUTERS ARE YOUR FUTURE CHAPTER 8 WIRED & WIRELESS COMMUNICATION COMPUTERS ARE YOUR FUTURE CHAPTER 8 WIRED & WIRELESS COMMUNICATION Answers to End-of-Chapter Questions Matching g 1. whiteboard i 2. sending device o 3. streaming j 4. WiFi m 5. Webcam d 6. data transfer

More information

Evaluating Cell Phone and Personal Communications Equipment and their EMC Effects on Automotive Audio and In-Cabin Modules

Evaluating Cell Phone and Personal Communications Equipment and their EMC Effects on Automotive Audio and In-Cabin Modules Evaluating Cell Phone and Personal Communications Equipment and their EMC Effects on Automotive Audio and In-Cabin Modules Craig W. Fanning Elite Electronic Engineering, Inc. 1516 Centre Circle Downers

More information

1.264 Lecture 32. Telecom: Basic technology. Next class: Green chapter 4, 6, 7, 10. Exercise due before class

1.264 Lecture 32. Telecom: Basic technology. Next class: Green chapter 4, 6, 7, 10. Exercise due before class 1.264 Lecture 32 Telecom: Basic technology Next class: Green chapter 4, 6, 7, 10. Exercise due before class 1 Exercise 1 Communications at warehouse A warehouse scans its inventory with RFID readers that

More information

Chapter 6 Telecommunications, Networks, and Wireless. Computing

Chapter 6 Telecommunications, Networks, and Wireless. Computing Chapter 6 Telecommunications, Networks, and Wireless Computing Essay Questions: 1. Define a hub, switch, and a router. 2. List the challenges associated with managing contemporary telecommunications and

More information

IEC TC106. Standards for the Assessment of Human Exposure to Electric, Magnetic, and Electromagnetic Fields, 0 to 300 GHz

IEC TC106. Standards for the Assessment of Human Exposure to Electric, Magnetic, and Electromagnetic Fields, 0 to 300 GHz International Electrotechnical Commission IEC TC106 Standards for the Assessment of Human Exposure to Electric, Magnetic, and Electromagnetic Fields, 0 to 300 GHz R. C. Petersen Chairman Secretariat and

More information

T = 1 f. Phase. Measure of relative position in time within a single period of a signal For a periodic signal f(t), phase is fractional part t p

T = 1 f. Phase. Measure of relative position in time within a single period of a signal For a periodic signal f(t), phase is fractional part t p Data Transmission Concepts and terminology Transmission terminology Transmission from transmitter to receiver goes over some transmission medium using electromagnetic waves Guided media. Waves are guided

More information

RF safety at base station sites

RF safety at base station sites RF safety at base station sites CONTENTS 1 Purpose and scope................................................. 2 2 Introduction........................................................ 2 3 Basic information...................................................

More information

INTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA

INTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA COMM.ENG INTRODUCTION TO COMMUNICATION SYSTEMS AND TRANSMISSION MEDIA 9/6/2014 LECTURES 1 Objectives To give a background on Communication system components and channels (media) A distinction between analogue

More information

Human EMF Exposure Limit Regulation

Human EMF Exposure Limit Regulation Human EMF Exposure Limit Regulation Document for consultation -- / -- / 2009 1 Chapter 1: Purpose and scope of the Regulation Article 1. Background 1. This human (Electro-Magnetic Field) EMF Exposure Limit

More information

Broadband access. Nils Holte, NTNU. NTNU Department of Telecommunications Kursdagene ved NTNU, Digitale telenett, 9. januar 2002 1.

Broadband access. Nils Holte, NTNU. NTNU Department of Telecommunications Kursdagene ved NTNU, Digitale telenett, 9. januar 2002 1. Broadband access - properties of the copper network Nils Holte, Kursdagene ved, Digitale telenett, 9. januar 2002 1 Definition of broadband Overview Alternatives for fixed broadband access pair cable,

More information

Telecommunications systems (Part 2)

Telecommunications systems (Part 2) School of Business Eastern Illinois University Telecommunications systems (Part 2) Abdou Illia, Spring 2007 (Week 12, Thursday 3/29/2007) T-1 Digital Subscriber Line (DSL) Cellular Telephone System Integrated

More information

Cable Modems. Definition. Overview. Topics. 1. How Cable Modems Work

Cable Modems. Definition. Overview. Topics. 1. How Cable Modems Work Cable Modems Definition Cable modems are devices that allow high-speed access to the Internet via a cable television network. While similar in some respects to a traditional analog modem, a cable modem

More information

Wireless Links - Wireless communication relies on radio signals or infrared signals for transmitting data.

Wireless Links - Wireless communication relies on radio signals or infrared signals for transmitting data. Uses of a network A network is a way to connect computers so that they can communicate, exchange information and share resources in real time. Networks enable multiple users to access shared data and programs

More information

1.264 Lecture 21. Telecom network technology: Fiber, satellite, cellular telephony, cable modems, DSL

1.264 Lecture 21. Telecom network technology: Fiber, satellite, cellular telephony, cable modems, DSL 1.264 Lecture 21 Telecom network technology: Fiber, satellite, cellular telephony, cable modems, DSL Network technology We ve just covered the basic components of transmission, switching/ routing and physical

More information

NEW WORLD TELECOMMUNICATIONS LIMITED. 2 nd Trial Test Report on 3.5GHz Broadband Wireless Access Technology

NEW WORLD TELECOMMUNICATIONS LIMITED. 2 nd Trial Test Report on 3.5GHz Broadband Wireless Access Technology NEW WORLD TELECOMMUNICATIONS LIMITED 2 nd Trial Test Report on 3.5GHz Broadband Wireless Access Technology Issue Number: 01 Issue Date: 20 April 2006 New World Telecommunications Ltd Page 1 of 9 Issue

More information

Annex to the joint statement: Exposure of the general public to radiofrequency fields

Annex to the joint statement: Exposure of the general public to radiofrequency fields 16 November 2009 Annex to the joint statement: Exposure of the general public to radiofrequency fields 1. Introduction This document presents typical exposure of the general public to radiofrequency (RF)

More information

Wireless SDSL for the Business Sector

Wireless SDSL for the Business Sector Wireless SDSL for the Business Sector Broadband Services over BreezeACCESS VL June 2005 Alvarion Ltd. All rights reserved. The material contained herein is proprietary. No part of this publication may

More information

Effects of Mobile Phone Radiation onto Human Head with Variation of Holding Cheek and Tilt Positions

Effects of Mobile Phone Radiation onto Human Head with Variation of Holding Cheek and Tilt Positions Effects of Mobile Phone Radiation onto Human Head with Variation of Holding Cheek and Tilt Positions M. R. Iqbal-Faruque* 1, N. Aisyah-Husni 2, Md. Ikbal-Hossain 1, M. Tariqul-Islam 2 and N. Misran 2 1

More information

FWA - technology and benefit

FWA - technology and benefit FWA - technology and benefit Professor Torleiv Maseng adj. Professor radio communications Department of Electroscience ( Inst. för Elektrovetenskap), Lund University, LTH FWA: Point to multipoint systems

More information

1.264 Lecture 34. Telecom: Connecting wired LAN, WAN. Next class: Green chapter 17. Exercise due before class

1.264 Lecture 34. Telecom: Connecting wired LAN, WAN. Next class: Green chapter 17. Exercise due before class 1.264 Lecture 34 Telecom: Connecting wired LAN, WAN Next class: Green chapter 17. Exercise due before class 1 Exercise Your transportation brokerage company also handles billing for freight shipments,

More information

High Speed Backbone Networks

High Speed Backbone Networks The world of telecommunications is changing rapidly. To cope with the requirements of the modern information oriented society, new technologies and services are to be deployed. ELSINCO's mission is to

More information

Definitions of the Telecommunication indicators used in the EUROSTAT telecommunications inquiry

Definitions of the Telecommunication indicators used in the EUROSTAT telecommunications inquiry Definitions of the Telecommunication indicators used in the EUROSTAT telecommunications inquiry Table 1 Operators (Unit: number (NBR)) Number of active operators (only active) offering publicly available

More information

UNDERSTANDING RADIO FREQUENCY AND BC HYDRO S SMART METERS

UNDERSTANDING RADIO FREQUENCY AND BC HYDRO S SMART METERS UNDERSTANDING RADIO FREQUENCY AND BC HYDRO S SMART METERS SUMMARY Radio frequency (RF) technology has been around for over years and is a part of everyday life radios, TVs and medic alert systems are examples.

More information

CSCI 491-01 Topics: Internet Programming Fall 2008

CSCI 491-01 Topics: Internet Programming Fall 2008 CSCI 491-01 Topics: Internet Programming Fall 2008 Introduction Derek Leonard Hendrix College September 3, 2008 Original slides copyright 1996-2007 J.F Kurose and K.W. Ross 1 Chapter 1: Introduction Our

More information

C20.0001 Information Systems for Managers Fall 1999

C20.0001 Information Systems for Managers Fall 1999 New York University, Leonard N. Stern School of Business C20.0001 Information Systems for Managers Fall 1999 Networking Fundamentals A network comprises two or more computers that have been connected in

More information

Evolution from Voiceband to Broadband Internet Access

Evolution from Voiceband to Broadband Internet Access Evolution from Voiceband to Broadband Internet Access Murtaza Ali DSPS R&D Center Texas Instruments Abstract With the growth of Internet, demand for high bit rate Internet access is growing. Even though

More information

How DSL Works. by Curt Franklin

How DSL Works. by Curt Franklin by Curt Franklin How DSL Works When you connect to the Internet, you might connect through a regular modem, through a localarea network connection in your office, through a cable modem or through a digital

More information

Internet Public Network

Internet Public Network Internet Public Network Bandwidth Data rate measured in bits (not bytes) per seconds Kbps (Kilobits per seconds) 125 chars/sec Mbps (Megabits per seconds) 1,250 chars/sec Gbps (Gigabits per seconds) 12,500

More information

Network+ Guide to Networks 6 th Edition. Chapter 7 Wide Area Networks

Network+ Guide to Networks 6 th Edition. Chapter 7 Wide Area Networks Network+ Guide to Networks 6 th Edition Chapter 7 Wide Area Networks Objectives Identify a variety of uses for WANs Explain different WAN topologies, including their advantages and disadvantages Compare

More information

Broadband Primer. A Guide to High Speed Internet Technologies. Indiana Office of Utility Consumer Counselor

Broadband Primer. A Guide to High Speed Internet Technologies. Indiana Office of Utility Consumer Counselor Broadband Primer A Guide to High Speed Internet Technologies Indiana Office of Utility Consumer Counselor 100 N. Senate Av., Room N501 Indianapolis, IN 46204-2215 www.openlines.in.gov toll-free: 1-888-441-2494

More information

Appendix 1: Satellite broadband service providers

Appendix 1: Satellite broadband service providers Appendixes Appendix 1: Satellite broadband service providers In 2005 06, satellite broadband services were provided by the following companies: Australian Private Networks (ACTIV8me) Be Communications

More information

Long Distance Connection and WAN

Long Distance Connection and WAN Lecture 6 Long Distance Connection and WAN Digital Telephone, PCM and Nyquist Sampling Theorem DSU/CSU, T Line Series and OC line Series Local Loop DSL Technologies - ADSL, HDSL, SDSL, VDSL Cable Modem

More information

Electromagnetic Compatibility and International Regulatory Approvals

Electromagnetic Compatibility and International Regulatory Approvals Electromagnetic Compatibility and International Regulatory Approvals Most countries have now implemented strict regulations regarding Electromagnetic Compatibility (EMC) for electronic devices. This paper

More information

Wireless Broadband: Health & Safety Information

Wireless Broadband: Health & Safety Information Wireless Broadband: Health & Safety Information Introduction The increasing use of mobile phones and other wireless technology has been accompanied by public debate about possible adverse effects on health.

More information

What Does Communication (or Telecommunication) Mean?

What Does Communication (or Telecommunication) Mean? What Does Communication (or Telecommunication) Mean? The term communication (or telecommunication) means the transfer of some form of information from one place (known as the source of information) to

More information

C.Courcoubetis G.D.Stamoulis Spring 2011

C.Courcoubetis G.D.Stamoulis Spring 2011 Broadband (IV): Cable access, Fiber, and other Media C.Courcoubetis G.D.Stamoulis Spring 2011 Introduction C. Courcoubetis, G.D. Stamoulis Broadband 4: Cable, fiber, - 2 Basic access technologies HFC SDV

More information

Chapter 7: Computer Networks, the Internet, and the World Wide Web. Invitation to Computer Science, C++ Version, Third Edition

Chapter 7: Computer Networks, the Internet, and the World Wide Web. Invitation to Computer Science, C++ Version, Third Edition Chapter 7: Computer Networks, the Internet, and the World Wide Web Invitation to Computer Science, C++ Version, Third Edition Objectives In this chapter, you will learn about: Basic networking concepts

More information

TECHNICAL SPECIFICATION FOR GSM MOBILE TERMINALS

TECHNICAL SPECIFICATION FOR GSM MOBILE TERMINALS TECHNICAL SPECIFICATION FOR GSM MOBILE TERMINALS Suruhanjaya Komunikasi dan Multimedia Malaysia Off Pesiaran Multimedia, 63000 Cyberjaya, Selangor Darul Ehsan, Malaysia Copyright of SKMM, 2007 FOREWORD

More information

Technical Glossary from Frontier

Technical Glossary from Frontier Technical Glossary from Frontier A Analogue Lines: Single Analogue lines are generally usually used for faxes, single phone lines, modems, alarm lines or PDQ machines and are generally not connected to

More information

Data Transmission via Modem. The Last Mile Problem. Modulation of Digital Signals. Modem Standards (CCITT)

Data Transmission via Modem. The Last Mile Problem. Modulation of Digital Signals. Modem Standards (CCITT) The Last Mile Problem LN, MN, WN how to connect private users at home to such networks? Problem of the last mile: somehow connect private homes to the public Internet without laying many new cables By

More information

communication over wireless link handling mobile user who changes point of attachment to network

communication over wireless link handling mobile user who changes point of attachment to network Wireless Networks Background: # wireless (mobile) phone subscribers now exceeds # wired phone subscribers! computer nets: laptops, palmtops, PDAs, Internet-enabled phone promise anytime untethered Internet

More information

3 Radio Waves and Human Body 8 Specific Absorption Rate (SAR)... 8 SAR value of a mobile handset... 8 Radiation level by a mobile tower...

3 Radio Waves and Human Body 8 Specific Absorption Rate (SAR)... 8 SAR value of a mobile handset... 8 Radiation level by a mobile tower... i Mobile Communication- Radio Waves & Safety Content 1 Overview 3 2 Radio Waves in Cellular Communication System 4 Radio waves... 4 Electric field, Magnetic field... 4 Electromagnetic field (EMF)... 4

More information

Copyright. Transport networks. Physical layer Transport and access networks. Pag. 1

Copyright. Transport networks. Physical layer Transport and access networks. Pag. 1 Physical layer Transport and access networks Gruppo Reti TLC nome.cognome@polito.it http://www.telematica.polito.it/ COMPUTER NETWORK DESIGN Physical layer review - 1 Copyright Quest opera è protetta dalla

More information

Wireless Broadband Access

Wireless Broadband Access Wireless Broadband Access (Brought to you by RMRoberts.com) Mobile wireless broadband is a term used to describe wireless connections based on mobile phone technology. Broadband is an electronics term

More information

ITU-T RECOMMENDATION J.122, SECOND-GENERATION TRANSMISSION SYSTEMS FOR INTERACTIVE CABLE TELEVISION SERVICES IP CABLE MODEMS

ITU-T RECOMMENDATION J.122, SECOND-GENERATION TRANSMISSION SYSTEMS FOR INTERACTIVE CABLE TELEVISION SERVICES IP CABLE MODEMS ORGANIZATION OF AMERICAN STATES INTER-AMERICAN TELECOMMUNICATION COMMISSION PERMANENT CONSULTATIVE COMMITTEE I: TELECOMMUNICATION STANDARDIZATION Standards Coordination Document Nr. 10: ITU-T RECOMMENDATION

More information

Physical Layer. Communication Satellites. ECE 453 Introduction to Computer Networks. Lecture 3 Physical Layer II

Physical Layer. Communication Satellites. ECE 453 Introduction to Computer Networks. Lecture 3 Physical Layer II ECE 453 Introduction to Computer Networks Lecture 3 Physical Layer II 1 Physical Layer Services transmit bits from sender to receiver. Transmission media Guided: twisted pair, coax, fiber Unguided (wireless):

More information

3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET

3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET 3.1 TELECOMMUNICATIONS, NETWORKS AND THE INTERNET The Business Value of Telecommunications and Networking Business value impacts of the telecommunications and Networking are: Declining transaction costs

More information

CWNA: Official Certification Guide Unit 1 Introduction to Wireless LANs

CWNA: Official Certification Guide Unit 1 Introduction to Wireless LANs CWNA: Official Certification Guide Unit 1 Introduction to Wireless LANs Wireless LANs were once considered expensive and slow solutions to certain network connectivity issues. Wireless LAN sales are now

More information

Network edge and network core. millions of connected compu?ng devices: hosts = end systems running network apps

Network edge and network core. millions of connected compu?ng devices: hosts = end systems running network apps Computer Networks 1-1 What s the Internet: nuts and bolts view PC server wireless laptop cellular handheld access points wired links millions of connected compu?ng devices: hosts = end systems running

More information