CSE, IT– III SEM Course Name- Digital & Analog Communication Manav Rachna College of Engg.

Slides:

Advertisements

Similar presentations

INTRUSION ALARM TECHNOLOGY

Advertisements

SIMS-201 The Telephone System Wired and Wireless.

Chapter Eight: The Telephone System

Telephone Network Hierarchy Analog Sounds

© Jörg Liebeherr, CS757 Three Network Technologies Telephone Network –The largest worldwide computer network, specialized for voice –Switching.

MAS 355: Communication and Information Systems in Organizations Back to the Basics: The Fundamentals of Telephony Professor John F. Clark.

There are many types of WAN technologies that can be used to solve the problems of users who need network access from remote locations. We will go through.

How Telephone Works Present by: Chongbo You SeungJae Baek Qihui Yu.

1 Telephone Connection. 2 Introduction The section instructs you on how to install a required phone line to every receiver.

Legacy Voice World Chapter 03. Analog Connectivity What is analog connectivity Electric wave forms Understanding Analog signaling.

Basic Features Voic message indicator

How does telephone work Members: XIAN MAO(XQM5030) YANSHENG WANG(YVW5126) ZHONGYI LIU(ZVL5078)

TELEPHONE INSTRUMENTS & SIGNALS

BASIC TELECOMMUNICATIONS

VoIP alarm monitoring. Traditional alarm systems Motion sensor Smoke detector Camera Premise Controll Unit Fire station Security service Central station.

Sistem Telepon Pertemuan 11 Matakuliah: H0122 / Dasar Telekomunikasi Tahun: 2008.

Alexander Graham Bell By Hannah Jennings And his Invention of the Telephone And his Invention of the Telephone.

Lecture 51 The Telephone System. Lecture 52 The Telephone System The modern telephone system draws from these Electrical Engineering subdisciplines: Signal.

The Telephone Instrument

1 1.POTS= Plain Old Telephone Service 2.PSTN=Public Switched Telephone Network 3.Each pair of communications wires consist of a tip and ring 4.Tip is positive,

1 © 2005 Cisco Systems, Inc. All rights reserved. Cisco Public IP Telephony Introduction to Packet Voice Technologies Cisco Networking Academy Program.

The Telephone and Telephone Line Chapter 2 Overview of a Telephone System Telephone set’s major parts Transmitter Converting sound wave to electrical.

Data Communications Circuit Switching. Switching Networks Long distance transmission is typically done over a network of switched nodes Nodes not concerned.

1 Pertemuan 4 Networking Fundamentals Matakuliah: M0284/Teknologi & Infrastruktur E-Business Tahun: 2005 Versi: >

Business Data Communications, Fourth Edition Chapter 2: Fundamentals of Data Communications Here, you’ll insert a graphic from the cover. This will come.

Revolutionization of Computers and Wireless Technology By: Vincent Mays.

M3903 Enhanced Telephone The M3903 Enhanced Telephone is a multi-line digital phone supporting up to four lines and/or features. The productivity- enhancing.

A Probe into Basic Telephony and Telecommunications Jon F. Johnson Extension Area Specialist Virginia Cooperative Extension.

1 Introduction to Telephony and POTS lines Introduction to Telephony and POTS lines BASIC TELECOMMUNICATIONS.

1 The pulse rate in the U.S. is 10 PPS. The break/make ratio is 60/40 DTMF = Dual Tone Multi Frequency Pulse refers to rotary phones Each digit on a telephone.

1.1.2 Product Evolution April 17th, 2012.

Office of Emergency Communications Gateway Training Workshop Module Three Hands-on Configuration Incident Commanders Radio Interface (ICR)

Onfer III TM COMMUNICATIONS INTERNATIONAL Private Branch Exchange (PBX) or Central Office (CO) Your Phone analog 2-wire line Call setup phase: 1.Your phone.

TDC 461: Basic Telecommunications DePaul University 9 April, 2001 LoriLee M. Sadler.

DUE Telephone /VoIP Learning Activity 4 Learning Outcomes 1 and 5.

Chapter 7 Networking: Computer Connections. Networks n Network - a computer system that uses communications equipment to connect two or more computers.

TSG-S Feature Definition for Wireless Local Loop Rick L. Willis CDG WLL Technical Team CDMA Development Group.

DUE Convergence Technology MODULE 2 - LEARNING OUTCOME 5 Describe signaling and its importance to telecommunications.

Principles of Voice & Data Lesson 1: Telephony Essentials Bellevue Community College Bob Young, Instructor.

Signaling. The use of signals for controlling communications  E.g., call setup, connection, connection teardown, and billing Early signaling  Signaling.

Introduction to Packet Voice Technologies Cisco Networking Academy Program.

Modem A Presentation Department of Computer Engineering,

Voice Over Internet Protocol (VoIP) Copyright © 2006 Heathkit Company, Inc. All Rights Reserved Presentation 2 – VoIP Versus PSTN.

Telecommunication II.

TELEPHONE NETWORK Telephone networks use circuit switching. The telephone network had its beginnings in the late 1800s. The entire network, which is referred.

GS3055-I Installation Process

PSTN SERVICES. Lecture Overview POTS Integrated Services Digital Network Business Services Service Provider services.

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

Telecommunication II.

EEC4113 Data Communication & Multimedia System Chapter 7: Network Layer by Muhazam Mustapha, October 2011.

INTRUSION ALARM TECHNOLOGY

Telecommunications Systems  Midterm Results Hi = 90Lo = 42 Average = Stan. Deviation = A > 85B > 67 C > 55D > 45.

Electrical Engineering Department EE-430 IP Telephony Presented by Adeeb Al-Harbi ID#

ECEN5553 Telecom Systems Week #9 [19a] "IT Helps Passengers, Crew Navigate Gigantic Oasis of the Seas Cruise Ship" [19b] "Open source IP PBX saves serious.

COMP 421 /CMPET 401 COMMUNICATIONS and NETWORKING Chapter 3 Data Transmission.

COMT 2201 Local Loop Functions COMT Telephone Network Architecture Customer Central Office, Class 5 Office Tandem Switch Local Loop Trunks “The.

The Telephone Analog vs Digital View the video first: Digital

Figure 2-1 Anatomy of a sine wave One Second One cycle V = Voltage t = time A = Amplitude One cycle per second = one Hertz a a.

 One of the simplest devices we have in our house.  very simple because the telephone connection to our house has not changed in nearly a century. Introduction.

Unit-4 Telephone system

TELEPHONE TRANSMISSION SYSTEMS

Modem. Introduction: A modem [Modulator -Demodulator] is a device. Data communication means transmitting digital information form one computer to other.

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to serve billions of.

INTEGRATED SERVICES DIGITAL NETWORK

ECEN5553 Telecom Systems Week #9 Read [17a] "Rapidly Recovering from the Catastrophic Loss of a Major Telecom Office" [17b] "How IT Leaders Can Best.

Circuit Switching and Telephone Network

Modem A Presentation Department of Computer Engineering,

Lecture 5: TELEPHONE NETWORK

Lecture 5: TELEPHONE NETWORK.

Lecture 3: TELEPHONE NETWORK.

Presentation transcript:

CSE, IT– III SEM Course Name- Digital & Analog Communication Manav Rachna College of Engg.

Telephone Networks The telephone network consists of your phone at home, that is connected by the Local Loop to the Central Office which is connected to a Hierarchical Phone Network. Worldwide there are over 300 million (300,000,000) telephones - 98% of them interconnected.

(a). POTS - Plain Old Telephone Set The POTS or Plain Old Telephone Set consists of 5 sections: Ringer Unit Hook Switch Dialer Unit Hybrid/Speech Network Hand Set

Plain Old Telephone Set The connection to the CO (Central Office) is with only 2 wires: Tip and Ring. This connection is called the Local Loop

Plain Old Telephone Set

The Tip is +ve and coloured green.. The Ring is -ve and coloured Red. If you look at a phone jack in your house, you will see that it is wired for 4 wires: Red, Green, Black and Yellow. Black and Yellow are not normally used. The black and yellow wires can be used for a second telephone line or they can be used for running a Network Physical layer protocol called Phonenet by Farralon. Phonenet uses the Black and Yellow for Network communications. It is for use with Appletalk and is a replacement for Localtalk. It runs at the Localtalk speed of 230 Kbps which is reasonable for small networks

Handset The Handset contains transducers for converting mechanical energy into electrical energy. The microphone converts speech into electrical energy. The diaphragm or speaker converts electrical signals into audible signals. Functions of a Telephone Set: Request use of network from the CO (Central Office). Inform you of the network status: Dial-tone, Ringing, Busy, Fast Busy (Talk Mail) Informs CO of desired number. Informs you when a call is incoming (phone rings). Releases use of network when call is complete (hang-up) Transmit speech on network & receives speech from distant caller. Adjust power levels and compensates for line length

24b. Local Loops The Local Loop is the connection between the Central Office and the home or business. To every home is run 2 wires (1 pair). The pair does not go directly to the Central Office, instead it goes to those big green boxes called "Serving Area Interfaces" (SIA) that you see on the street corners. Then large multi-conductor bundles of wires go from there to the Central Office.

c. Central Office The Central Office provides the following functions: It supplies the battery voltage for the telephone system. The On-hook voltage is 48 Vdc +/- 2V. Off-hook voltage is -6.5 Vdc. It supplies the Ringing Generator - 90 to 120 VAC, 20 Hz, 2 sec on/ 4 sec off It supplies the Busy signal ( Hz, 0.5 sec On/ 0.5 sec Off), Dial Tone ( Hz) and Fast Busy ( Hz, 0.2 sec On/ 0.3 sec Off). It has the digital switching gear that determines if the number is an Interoffice call (local) or an Intraoffice call (Toll - long distance).