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Telecommunications Basics Part 1
 
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In the first part of our series on telecommunications, Jim Gibson discusses the deregulation of the telecommunications industry and some of the basic technologies that power it.
Views: 138655 CableSupply.com
Telecommunication : Foundations of Telecommunication (05:01)
 
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Telecommunication : Foundations of Telecommunication (05:01) We introduce the telecommunication series by looking as some fundamental concepts: the basics of electricity, analog signals, and digital signals. Links from video: -http://youtu.be/zYS9kdS56l8 -http://www.freemosquitoringtones.org/ Lesson 1 in our “Telecommunication” series. This is part of our Introduction to Computers lecture series. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Mr. Ford Class is one of the leading educational YouTube channels for anatomy and physiology, microbiology and computer training videos. Scott Ford, M. Ed. is an award-winning teacher with over 16 years in the classroom. His videos are used by public schools, private schools, colleges and trade schools around the world. All of his tutorials are now available for only $9.95/mo. at http://mrfordsclass.net/ or follow him on social media. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Come and follow me on Social Media ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Twitter: https://twitter.com/mrfordsclass Facebook: https://www.facebook.com/mrfordsclasslearning YouTube: https://www.youtube.com/mrfordsclass Instagram: http://instagram.com/mrfordsclasslearning Snapchat: mrfordsclass
Views: 16002 Mr. Ford's Class
Basic Principles of VoIP Telecommunications. GoAntiFraud for Running Your GSM Termination Business
 
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About 50 thousand minutes of traffic is terminated in every country every year. That is, the terminators’ GSM gateways process about 16,000 calls a day. To keep their profits, the mobile operators develop special antifraud systems to block phone numbers that have a suspiciously high activity of outgoing calls. In order to create such software, GSM operators are investing millions of dollars. In order to get a steady income from the termination of VoIP GSM calls, the entrepreneur must use efficient tools to bypass the antifraud systems. Simulating human behavior in GSM networks, you can mask the SIM-card and successfully do a voice termination. You can find more interesting information about the telecommunication business at → https://goo.gl/xSTHrz To successfully circumvent antifraud systems and get stable earnings doing VoIP traffic termination, you hould connect to GoAntiFraud! We offer NewBusiness, a turnkey solution for beginners, which includes everything you need to start your business. Sign up here → https://goo.gl/lIZGhk to start your own VoIP GSM termination business! Subscribe to our GoAntiFraud channel → https://goo.gl/wbOzyW to get only useful information for profitable GSM termination!
Views: 1650 GoAntiFraud
Lec 1 | MIT 6.450 Principles of Digital Communications I, Fall 2006
 
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Lecture 1: Introduction: A layered view of digital communication View the complete course at: http://ocw.mit.edu/6-450F06 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
Views: 255406 MIT OpenCourseWare
AM and FM Radio As Fast As Possible
 
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AM & FM radio have been around since way before the digital age. How can radios decode AM & FM signals only using analog technology? Freshbooks message: Head over to http://freshbooks.com/techquickie and don’t forget to enter Tech Quickie in the “How Did You Hear About Us” section when signing up for your free trial. Follow: http://twitter.com/linustech Join the community: http://linustechtips.com
Views: 399419 Techquickie
HOW RADIO WORKS - 1943
 
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The theory and operation of early radio
Views: 267445 TheShootingstar31
What is Cellular Network | Hand Off Concepts
 
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Cellular network usage multiple transmitter to cover entire region. These transmitter can cover only a particular area which is known as cell. This video will discuss concepts of cellular network with hand off process.
Views: 86113 HowTo
Basics Of Communication System
 
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A short video to explain the basics of a simple communication system. The block diagram is shown and each part is explained in a most simplified way. Although it could have been extended, but the purpose of this channel is to explain Engineering in minutes or if possible in one minute. I hope you like the video. Rate, Comment and Subscribe if you would like to see more of these in your news feed. Thanks. Find my Blog at - http://www.codefap.com Follow me on Google+ - http://www.gplus.to/omkar4 Follow me on Facebook - http://www.facebook.com/codefap Follow me on Twitter - http://www.twitter.com/codefap My YT Channel 1 - http://www.youtube.com/c0defap My YT Channel 2 - http://www.youtube.com/engineersminute Wallpaper Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/
Views: 67179 Engineers Minute
What is microwave
 
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Michael Pangia, President and CEO of Aviat Networks, explains how microwave radio technology is used for high-capacity, extremely reliable point-to-point wireless communications.
Views: 16763 AviatNetworks
Introduction to Telephone Systems
 
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Follow Eli on the Vlog Channel: https://www.youtube.com/user/EliComputerGuyLive Info Level: Beginner Presenter: Eli the Computer Guy Date Created: August 2, 2010 Length of Class: 54 Minutes Tracks Telephone Systems Prerequisites None Purpose of Class This class introduces students to the basic components of telephone systems. Topics Covered Public Switched Telephone Network Central Offices Trunk Lines PBX and Voicemail Systems PBX Stations Voicemail Subcribers Class Notes Introduction Telephone systems are not complicated if you understand how they work. A Word on VoIP VoIP is not a telephone system PSTN PSTN -- Public Switched Telephone Network is like the Internet, but for telephone communication NADP -- North American Dialing Plan -- Is the system for routing telephone calls. Central Office -- All telephone lines connect to a local central office Trunk Lines Every Trunk Line has a telephone number A Trunk Line allows for 1 incoming or outgoing call. You can have far more telephones in a building then you have trunk lines. Incoming Trunk lines are setup in Hunt Groups. If the main phone number is busy the call is automatically forwarded to the next number in the Hunt Group Incoming Hunt Groups are setup by your local telephone company. Outgoing calls can be routed to use selected trunk lines. This in configured in your PBX. PBX and Voicemail The PBX routes telephone calls The Voicemail system provides all audio messaging. (Voicemail boxes, Message Boards, and Auto Attendant Messages) Stations All devices that connect to the PBX are "Stations". This includes telephones, call boxes, intercom systems, etc. There are 2 types of stations; Analogue and Digital. Analogue and Digital stations have to be connected to appropriate ports on the PBX. An analogue phone cannot connect to a digital port and vice versa. Almost all fax machines and phones you buy at retail stores are analogue. If your new fax machine does not work it may be because it's plugged into a digital line. Subscribers Subscribers are users of the Voicemail system. Subscribers do not have to have stations Voicemail ports are the number of connections to the Voicemail system at any one time. This includes not just people retrieving their voicemail, but also incoming calls that connect to Auto Attendant messages. Final Thoughts Be careful before you touch! Most older telephone and voicemail systems were administered using a phone keypad, NOT and computer interface. If you mess something up it can be very difficult to rebuild a deleted Auto Attendant or such. Resources North American Numbering Plan PSTN -- Wikipedia
Views: 645469 Eli the Computer Guy
Network Management Principles
 
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This tutorial explains the principles behind Network Management and introduces the terms Manager, Agent, Management Protocol (such as SNMP), Management Information Base (MIB), polling and Distributed Management.
Views: 49750 FLAMINGO Project
HUAWEI Access Network Feature Description-QinQ VLAN And Stacking VLAN V1.0
 
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HUAWEI Access Network Feature Description-VLAN Communications video shows you basic VLAN concepts and telecommunications principles. HUAWEI Access Network Documentation Bookshelf: http://support.huawei.com/onlinetoolsweb/fixed_network_portal/en/access/video.html?from=youtube
Wireless Telecommunications Course: Cellular to LTE, WiFi and Satellite
 
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Set to HD and full screen... or watch in full quality at teracomtraining.com: http://www.teracomtraining.com/online-courses-certification/samples/course-l2106-introduction-wireless-telecommunications.htm Online Course L2106: Wireless Telecommunications 10 interactive multipart lessons, multiple-choice exam and certificate. Produced 2012. Mobility • Cellular Networks • GSM and TDMA • UMTS and 1X CDMA • LTE • WiFi • Satellite Wireless Telecommunications is a comprehensive course on wireless, mobile telecommunications plus wireless LANs and satellites. You'll gain a solid understanding of the key principles of wireless and mobile networks: • Coverage, capacity and mobility • Why cellular radio systems are used • Mobile network components and operation • Registration and handoffs • Digital radio • Data over cellular • Cellular technologies and generations: - 1G analog FDM - 2G GSM and IS-136 TDMA - 3G UMTS and 1X CDMA - 4G LTE OFDM Plus, you'll receive an overview of the radio frequencies and standards for wireless LANs and an overview of satellite communications. The objective of this course is to develop a solid understanding of mobile communications networks and technologies. We'll cut through the jargon to demystify wireless, explaining the jargon and buzzwords, the network, technologies, the underlying ideas, and how it all works together... in plain English. Course Outline 1. Introduction (watch now) Course introduction and overview. Basic radio principles, analog and digital over radio. 2. Mobile Network Components, Jargon and Basic Operation Handset, base station, airlink, handoffs, connection to wireline systems 3. Cellular Principles and AMPS (1G) Coverage, capacity and cellular radio systems, mobility, spectrum, FDM spectrum sharing 4. 2G: Digital Radio - Voice Communications Components and operation of a digital radio: microphone, codec, RF modem, antenna 5. Digital Cellular: Data Communications Using only the RF modem and antenna of the cellphone as a "tethered" modem for another device 6. Spectrum-Sharing Technologies: FDMA, TDMA, CDMA, OFDM Sorting out the generations and standards; GSM and IS-136 TDMA vs. CDMA and OFDM 7. 3G Cellular: CDMA (watch now) Basic ideas behind CDMA and its operation; 1X vs. UMTS standards 8. 4G Mobile Cellular: LTE Steve Jobs ends the standards wars; OFDM basic principles of operation 9. 802.11 Wireless LANs - WiFi Basic principles of operation, 802.11 standards, frequency bands and limitations 10. Communication Satellites Basic principles of operation, geosynchronous and LEO 11. Multiple-Choice Exam Course Objectives: What You Will Learn The objective of this course is to develop a solid understanding of mobile cellular communications networks and technologies. After taking this course, you will be up to speed on the fundamental principles of cellular radio networks, components and operation, digital radio, spectrum-sharing technologies and the four generations of mobile cellular technology. An additional objective is a basic understanding of WiFi and satellites. In particular, on completion of this course, you will be able to explain: • The principal components of a mobile communication system • Coverage, capacity and mobility • The reason for and basic layout of a cellular radio system • Basic operation of a mobile network including registration and handoffs • How digital cellular is implemented • How digital cellular can be used for data communications, either as a tethered modem or using the phone as a data terminal • The principles and operation of the different spectrum-sharing technologies: first-generation FDMA, second-generation GSM and TDMA, third-generation UMTS and 1X CDMA and fourth-generation LTE and its OFDM • The different radio bands and standards for 802.11 wireless LANs • The two main types of communication satellites and their advantages and disadvantages.
FREQUENCY MODULATION - PART I - BASIC PRINCIPLES
 
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FREQUENCY MODULATION - PART I - BASIC PRINCIPLES - Department of Defense 1964 - PIN 28398 - FUNDAMENTALS OF AM AND FM RADIO COMMUNICATION, HOW FM ELIMINATES PROBLEM OF ELECTRICAL INTERFERENCE, FUNCTIONING OF FM RADIO EXAMINED IN DETAIL.
Views: 195023 PublicResourceOrg
Introduction to Telecommunication Technologies.mp4
 
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Module 3 Lecture Part 1
Views: 4868 elifyilmaz4
Introduction to Telecommunications, Lecture 1
 
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by Szymon Machajewski
Views: 23516 Szymon Machajewski
FM Radio Electronics: "Frequency Modulation: Basic Principles" 1964 US Army Training Film TF11-3482
 
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Support this channel: https://www.patreon.com/jeffquitney more at http://scitech.quickfound.net "FREQUENCY MODULATION - PART I - BASIC PRINCIPLES: FUNDAMENTALS OF AM AND FM RADIO COMMUNICATION, HOW FM ELIMINATES PROBLEM OF ELECTRICAL INTERFERENCE, FUNCTIONING OF FM RADIO EXAMINED IN DETAIL." US Army Training Film TF11-3482 The 1944 film "Basic Principles of Frequency Modulation" is also excellent: https://www.youtube.com/watch?v=mu3ASt2kwFo Originally a public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). http://en.wikipedia.org/wiki/Frequency_modulation Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/ In telecommunications and signal processing, frequency modulation (FM) conveys information over a carrier wave by varying its instantaneous frequency. This contrasts with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant. In analog applications, the difference between the instantaneous and the base frequency of the carrier is directly proportional to the instantaneous value of the input-signal amplitude. Digital data can be sent by shifting the carrier's frequency among a range of settings, a technique known as frequency-shift keying. FSK (digital FM) is widely used in data and fax modems. Morse code transmission has been sent this way, and FASK was used in early telephone-line modems. Radioteletype also uses FSK. FM modulation is also used in telemetry, radar, seismic prospecting and newborn EEG seizure monitoring. Frequency modulation is known as phase modulation when the carrier phase modulation is the time integral of the FM signal. FM is widely used for broadcasting music and speech, two-way radio systems, magnetic tape-recording systems and some video-transmission systems. In radio systems, frequency modulation with sufficient bandwidth provides an advantage in cancelling naturally-occurring noise. Radio Edwin Howard Armstrong (1890--1954) was an American electrical engineer who invented wideband frequency modulation (FM) radio. He patented the regenerative circuit in 1914, the superheterodyne receiver in 1918 and the super-regenerative circuit in 1922. Armstrong presented his paper, "A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation", (which first described FM radio) before the New York section of the Institute of Radio Engineers on November 6, 1935. The paper was published in 1936. As the name implies, wideband FM (WFM) requires a wider signal bandwidth than amplitude modulation by an equivalent modulating signal; this also makes the signal more robust against noise and interference. Frequency modulation is also more robust against signal-amplitude-fading phenomena. As a result, FM was chosen as the modulation standard for high frequency, high fidelity radio transmission, hence the term "FM radio" (although for many years the BBC called it "VHF radio" because commercial FM broadcasting uses part of the VHF band—the FM broadcast band). FM receivers employ a special detector for FM signals and exhibit a phenomenon known as the capture effect, in which the tuner "captures" the stronger of two stations on the same frequency while rejecting the other (compare this with a similar situation on an AM receiver, where both stations can be heard simultaneously)... An FM signal can also be used to carry a stereo signal; this is done with multiplexing and demultiplexing before and after the FM process. The FM modulation and demodulation process is identical in stereo and monaural processes. A high-efficiency radio-frequency switching amplifier can be used to transmit FM signals (and other constant-amplitude signals)... Normal (analog) TV sound is also broadcast using FM...
Views: 52624 Jeff Quitney
HUAWEI Access Network Feature Description-VLAN Communications V1.0
 
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HUAWEI Access Network Feature Description-VLAN Communications video shows you basic VLAN concepts and telecommunications principles. HUAWEI Access Network Documentation Bookshelf: http://support.huawei.com/onlinetoolsweb/fixed_network_portal/en/access/video.html?from=youtube
Basic Antenna Fundamentals
 
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Basic Antenna Fundamentals Antennas are a very important component of communication systems. By definition, an antenna is a device used to transform an RF signal, traveling on a conductor, into an electromagnetic wave in free space. Antennas demonstrate a property known as reciprocity, which means that an antenna will maintain the same characteristics regardless if it is transmitting or receiving. Most antennas are resonant devices, which operate efficiently over a relatively narrow frequency band. An antenna must be tuned to the same frequency band of the radio system to which it is connected, otherwise the reception and the transmission will be impaired. When a signal is fed into an antenna, the antenna will emit radiation distributed in space in a certain way. A graphical representation of the relative distribution of the radiated power in space is called a radiation pattern.
Views: 60827 Dan Vanevenhoven
Principles of VoIP Telecommunications. GoAntiFraud Features for Successful GSM Termination
 
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The video will you help you learn about the basic principles of the functioning of VoIP telecommunications. It provides information about what VoIP technology to transfer calls and VoIP server are, how calls are redirected using VoIP GSM Gateway, about the principles of transit companies (originators) and the way they form termination rates. You can get more information in our Study Centre → https://goo.gl/xSTHrz Using GoAntiFraud, you will be able to successfully run the GSM termination business. We have turnkey solutions for newcomer, which are NewBusiness packages that include a set of VoIP equipment, tools to protect the SIM-cards against the antifraud systems, as well as user-friendly software to computerize the operation. Sign up here → https://goo.gl/jX1ANw to become a successful entrepreneur in the field of VoIP traffic termination! Subscribe to our GoAntiFraud channel → https://goo.gl/wbOzyW to get only useful information for profitable GSM termination!
Views: 419 GoAntiFraud
Optical Fibres in Communication: Covers all Important Points about Optical Fibre [HD]
 
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For More Detailed Knowledge and Lots of Interesting Stuff, You Should Visit My BLOG At Least Once- https://www.engineeringmadeeasypro.com/ This lecture on optical fibre includes: 1- What is an optical fibre? 2- Structure and working of the optical fibre 3- optical fibre communication process 4- Types of optical fibers (Single Mode Fiber and Multi Mode Fibre) 5- Benefits of optical fibers 6-Losses in optical fibre 7-Dispersion in optical fibre 1.What is an Optical Fibre? For more details you can visit my BLOG- http://www.engineeringmadeeasypro.com/ An optical fiber is a flexible and transparent fiber which is made by drawing glass (silica) or plastic. Optical fiber has a diameter slightly thicker than that of a human hair. 2.Structure and Working of the Optical Fibre Optical fibers are made of glass or plastic. Most optical fibers used in communication have diameter of 0.25 mm to 0.5 mm including outer coating. Optical Fibre communication takes place between 0.8 micrometer to 1.7 micrometer of wavelength of electromagnetic spectrum. Optical fibres have a transparent core which is surrounded by a transparent cladding and the cladding has a protective covering over it. The image given below explains the concept of Total Internal Reflection (TIR) which is the phenomenon responsible for propagation of light inside the optical fibre. Based on the refractive index profile, there are two categories of optical fibres- #Step Index Optical Fibres #Graded Index Optical Fibres In step index fibres, the refractive index profile makes a step change at the core-cladding interface. In step index fibre if core has refractive index n1 and cladding has refractive index n2, then this condition holds- n1 greater than n2 And this is necessary condition for Total Internal Reflection (TIR) in the optical fibre. While the graded index fibres don't have a constant refractive index in the core but the refractive index of the core decreases with increasing radial distance from the core axis. It has maximum value of refractive index at the core axis that decreases as we move away from the core axis and becomes constant in the cladding. The light rays travel inside the core by the phenomena of total internal reflection. Since the core has higher refractive index (n1) than that of cladding (n2) So when the light rays fall on the core-cladding interface (moves from denser to rarer medium), it returns back into the core. But for the Total Internal Reflection (TIR) to take place, it is necessary for the light rays to have incidence angle greater than the critical angle while moving from denser to rarer medium (core to cladding). 3.Optical Fiber Communication Process Message that we want to transmit maybe non-electrical in nature (audio signal), so first of all it needs to be converted into electrical form using transducers. Now the message converted into electrical form modulates an optical source. Ex. LASER or LED. After this the light rays containing message travel through the optical fiber by the phenomena of total internal reflection. Due to total internal reflection the energy loss is negligible inside the fiber while travelling. Now at the receiving end, photodetectors like photodiodes or phototransistors etc, are used to convert the light signal back into electrical signal. Then the original message signal is retrieved from this electrical signal. 4.Types of Optical Fibres (Based on Modes of Propagation) There are two types of optical fibres based on modes of propagation - #Single Mode fibres (SMF) #MultiMode fibres (MMF) As clear by the name itself, the single mode fibres support only one propagation path, since they have very small diameter. While multimode fibres can support many propagation paths or transverse modes as they have larger diameter. Single mode fibres are used for long distance communication while multimode fibres for short distance communication. Single mode fibre provide greatest transmission bandwidth and lowest losses in communication. 5.Benefits of Optical Fibres #Energy loss is negligible inside the optical fibres while propagation due to total internal reflection. #Optical fibres provide very large potential bandwidth (since optical communication takes place at very high frequency. #Optical fibres have small size, are lightweight and very flexible. #Optical fibres provide electrical isolation and are shock resistant. Since inside the fibre, light propagates; not any electric current. #Optical fibers provide high degree of signal security since these fibres do not radiat #Optical fibres are easy to maintain and the communication system is reliable. 6.Losses in Optical Fibres. These losses are the following- #Material absorption #Linear and nonlinear scattering #Fibre bend losses 7.Dispersion in optical fibres When light rays travel through the fiber, the phenomena of dispersion (broadening of transmitted light pulses), The dispersion is of two types- #Intermodal Dispersion #Intramodal Dispersion
Views: 79626 Engineering Made Easy
BASIC TERMINOLOGY USED IN ELECTRONIC COMMUNICATION SYSTEMS
 
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For more information: http://www.7activestudio.com [email protected] http://www.7activemedical.com/ [email protected] http://www.sciencetuts.com/ [email protected] Contact: +91- 9700061777, 040-64501777 / 65864777 7 Active Technology Solutions Pvt.Ltd. is an educational 3D digital content provider for K-12. We also customise the content as per your requirement for companies platform providers colleges etc . 7 Active driving force "The Joy of Happy Learning" -- is what makes difference from other digital content providers. We consider Student needs, Lecturer needs and College needs in designing the 3D & 2D Animated Video Lectures. We are carrying a huge 3D Digital Library ready to use. In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment DTE usually capable of interconnection and interoperation to form an integrated whole. The components of a communications system serve a common purpose, are technically compatible, use common procedures, respond to controls, and operate in union.
Views: 8395 7activestudio
Distributed Systems in Telecommunications : The Principles of Sockets using Python
 
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Tutorial about Sockets using Python Riga Technical University (RTU)
Views: 207 Bilal Treish
Fiber optic cables: How they work
 
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Bill uses a bucket of propylene glycol to show how a fiber optic cable works and how engineers send signal across oceans. More info at http://www.engineerguy.com. You can translate captions at http://www.engineerguy.com/translate
Views: 3220029 engineerguy
Giuseppe Caire - Alexander von Giuseppe Caire 2014 (EN)
 
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Giuseppe Caire is one of the world's leading experts on the principles of telecommunications and information theory. His pioneering work on coded modulation and many other publications and applications have had a lasting impact on the practice and standards of modern wireless communications. They are at the bottom of many digital communication technologies such as WLAN and mobile phone transmission. By conducting top-level theoretical research at university whilst working on practical applications at the Heinrich Hertz Institute, Caire would continue to combine productive research with concrete applications and consolidate TU Berlin's position at the international forefront of the field. Nominating University: Technische Universität Berlin (TU Berlin) in conjunction with the Fraunhofer Heinrich Hertz Institute, Berlin Prof. Dr. Giuseppe Caire born in 1965, is currently a professor at the University of Southern California, Los Angeles, USA. Italian by birth, he worked as a research assistant at the European Space Agency ESTEC in The Netherlands after completing his doctorate at the Politecnico di Torino in 1994, returning to Turin as an assistant professor in 1995. From 1997 to 1998, he was an associate professor at the University of Parma, receiving a research fellowship to Princeton University, USA, in 1997. He was a full professor at the Eurecom Institute, Antipolis, France, from 1998 to 2005, and spent several months at the University of Sydney in 2000. He has received numerous honours, particularly from IEEE for whom he worked as president of the Information Theory Society, ITS. More information: http://www.humboldt-professur.de/en
Telecommunications Case Study - Principles of Business for CSEC® Examinations
 
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These extra case studies help bring topics covered in Principles of Business to life. The case study videos encourage students to learn more about specific areas discussed in the textbook. This case study examines telecommunications.
Ham Radio General Lesson 4.1, Electrical Principles (re-uploaded)
 
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This is the video introduction for Section 4.1 in the ARRL General Class License Manual for Ham Radio. The speaker is Lew French, KCØUER. The video has been re-uploaded because the original was corrupted.
Views: 5005 David Casler
Telecommunications Engineering - Michael Heimlich
 
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Michael will speak about the history of telecommunication in terms of the trade off between frequency and data rate. In addition to this he will also discuss transmission time and noise, including the concept of modulation and how different physical technologies are needed to go from one data rate to higher and higher data rates. Professor Michael Heimlich is an Electrical Engineer and has worked for 25 years in industry before joining Macquarie University in 2009 as a CoRE Professor in the Department of Engineering. Mike’s research interests include wireless circuit design, software engineering of design automation systems, and antennas made from exotic materials, like carbon nanotubes. When he’s not teaching or working on his research, Mike mentors high school robotics teams.
Views: 8862 BridgesToHigherEd
Telecom Course - Telecommunications Training
 
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Set to HD and full screen... or watch in full quality at teracomtraining.com: http://www.teracomtraining.com/online-courses-certification/samples/course-l2101-introduction-pots-and-the-pstn.htm Get up to speed and establish a solid understanding of traditional telecom with this proven course. Bust the buzzwords, demystify the jargon and understand how it all fits together, in plain English. CTNS Course L2101 POTS and The PSTN: Introduction Loops and Trunks • Circuit-Switching • LECs and IXCs • Analog • Voiceband • DTMF • SS7 Welcome to Teracom's Online Course "POTS and the PSTN". This free online telecom training course lesson is the introduction to the course. This is the first course in the CTNS Certification Package, a set of six courses plus Certified Telecommunications Network Specialist (CTNS) certification from the Telecommunications Certification Organization (TCO). In this course, we'll understand the Public Switched Telephone Network (PSTN), and Plain Ordinary Telephone Service (POTS). Understanding the fundamentals of this technology and network architecture is the starting point for understanding everything else. If you want to jump right to learning about IP packet networks, Ethernet and MPLS services, that begins with the OSI model and its layers. In fact, The OSI Layers and Protocol Stacks is the first course of the four-course package that includes Certified IP Telecom Network Specialist (CIPTS) certification. CTNS is the more complete training, six courses that begin with this one, plus wireless then the four CIPTS courses. Overall goals The overall goal of this course is to understand: - How the physical telephone network is organized - The characteristics of basic telephone service - How calls are established end-to-end, and to - Demystify common telephony jargon and buzzwords. Learning Objectives Upon completion of this course, you will be able to explain: - Why telecom networks are divided into local access wiring and long-distance transmission - The founding, breakup and re-emergence of AT&T in the US; TELUS and Bell in Canada - A basic model for the PSTN and its main components - Loops, why they are called loops and why there is a maximum loop length - The outside plant - Circuit-switching - Central Office and Customer Premise - How and why remotes are used; fiber to the neighborhood - Plain Ordinary Telephone Service - What analog is, and how it relates to copper wires, electricity, circuits and sound - How microphones and speakers work - The human hearing range - Whether trees falling in the forest if no-one is there to hear them cause a sound - The voiceband - Why and how the telephone system can limit frequencies to the voiceband - Why two wires are used - Why they are twisted together (twisted pair) - Tip and ring, -48 volts - Supervision, dial tone, ringing, lightning protection - Dial-up - Touch-tone and DTMF - Basics of SS7, and - Examples of sophisticated call routing using SS7 List of Lessons Lesson 1 is the Introduction to the Course. Lesson 2 is a brief history lesson, beginning with the invention of the telephone. This will establish the concept of local telephone companies, access circuits and inter-city transmission. Next, we will understand the fundamentals of the PSTN: customer premise and Central Office, loops, trunks, circuit switching and understand how a telephone call is connected end-to-end. Then we will understand how information is represented on the local loop using analog techniques in traditional telephony, and just what exactly we mean by analog. Next is the question of fidelity: how faithfully the voice is reproduced at the far end, which is determined by the frequency bandwidth provided on the access, known as the voiceband. The lesson on the voiceband is available free. The voiceband, loops, trunks and circuit-switching are all aspects of Plain Ordinary Telephone Service. We'll round out the discussion by understanding some of the other key aspects of POTS and related jargon and buzzwords like "twisted pair". We will then look at an improvement on the address signalling mechanism for POTS that was called "touch tone", or more technically, DTMF. Finally, we will understand in broad brushstrokes the control system for the telephone network, called SS7 in North America, and basic principles of call routing.
Mobile Communications
 
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This EzEd Video Explains - Mobile Communications - Cellular Concept - Mobile Phone System - Features of Cellular Concepts - Frequency Reuse - Cell Splitting - Handoff Procedure - Global System for Mobile ( GSM )
Views: 151693 EzEd Channel
Network and Telecommunications Engineering Technology Diploma
 
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This diploma program produces graduates who possess the skill set, attitude and knowledge to establish careers as certified technologists in the fields of local-area and wide-area voice, video and integrated data communications. Coursework stresses messaging principles and provides insight into wired, wireless and fibre-optic signal propagation. Visit www.okanagan.bc.ca for more information.
Views: 10976 Okanagan College
Telecommunications 01/10 - Introduction structure regulation and competition in the telecom sector
 
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01 - Introduction structure regulation and competition in the telecom sector Prof. Nicoletta Corrocher. The course aims at analysing the technological, economic and regulatory aspect of the telecommunications sector. In particular, it puts emphasis on the phenomenon of convergence and investigates the development of innovative products and services, the strategic management of different types of telecom firms and the emerging regulatory issues. The course adopts a micro-level perspective, by investigating the economics of the ICT and its impact on the emergence of new and profitable opportunities for creating value added contents for the final users. The course aims at analysing the technological, economic and regulatory aspect of the telecommunications sector. In particular, it puts emphasis on the phenomenon of convergence and investigates the development of innovative products and services, the strategic management of different types of telecom firms and the emerging regulatory issues. The course adopts a micro-level perspective, by investigating the economics of the ICT and its impact on the emergence of new and profitable opportunities for creating value added contents for the final users. Request your welcome kit at http://www.unibocconi.eu/welcomekit
Views: 47561 UniBocconi

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