Telephone Networks & Technologies

Course Properties

Course date: 29-10-2017
Course End Date: 02-11-2017
Location Sharm El-Sheikh

Course Objectives:
            At the end of the program, participants will be acquainted with:
                • Basic telephony
                • Bases of networks configurations
                • Local networks
                • Switching in an analog environment
                • Network transmission
                • Voice-over IP concept
                • The set & the central office telephone electronics
                • Exchange principles and telephone networks
                • Plan and design PABX networks
                • Traffic planning and forecasting
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Course Contents:

            First Week:
                • BASIC TELEPHONY:
                                  THE SIMPLE TELEPHONE CONNECTION
                                  SOURCES AND SINKS
                                  TELEPHONE NETWORKS: INTRODUCTORY TERMINOLOGY
                                  ESSENTIALS OF TRAFFIC ENGINEERING
                                  Measurement of Telephone Traffic
                                  Blockage, Lost Calls, and Grade of Service
                                  Availability
                                  ‘Handling’’ of Lost Calls
                                  Infinite and Finite Sources
                                  Probability-Distribution Curves
                                  Smooth, Rough, and Random Traffic
                                  ERLANG AND POISSON TRAFFIC FORMULAS
                                  Alternative Traffic Formula Conventions
                                  WAITING SYSTEMS (QUEUEING)
                                  Server-Pool Traffic
                                  DIMENSIONING AND EFFICIENCY
                                  Alternative Routing
                                  Efficiency versus Circuit Group Size

                • BASES OF NETWORK CONFIGURATIONS:
                                  Introductory Concepts
                                  Higher-Order Star Network
                                  VARIATIONS IN TRAFFIC FLOW
                                  ONE-WAY AND BOTH-WAY (TWO-WAY) CIRCUITS
                                  QUALITY OF SERVICE

                • LOCAL NETWORKS:
                                  INTRODUCTION
                                  SUBSCRIBER LOOP DESIGN
                                  Quality of a Telephone Speech Connection
                                  Subscriber Loop Design Techniques
                                  CURRENT LOOP DESIGN TECHNIQUES
                                  SIZE OF AN EXCHANGE AREA BASED ON NUMBER
                                  OF SUBSCRIBERS SERVED
                                  SHAPE OF A SERVING AREA
                                  EXCHANGE LOCATION
                                  DESIGN OF LOCAL AREA ANALOG TRUNKS (JUNCTIONS)
                                  VOICE-FREQUENCY REPEATERS
                                  TANDEM ROUTING
                                  DIMENSIONING OF TRUNKS
                                  COMMUNITY OF INTEREST

                • SWITCHING IN AN ANALOG ENVIRONMENT:
                                  Switching in the Telephone Network
                                  NUMBERING, ONE BASIS OF SWITCHING
                                  CONCENTRATION AND EXPANSION
                                  BASIC SWITCHING FUNCTIONS
                                  INTRODUCTORY SWITCHING CONCEPTS
                                  ELECTROMECHANICAL SWITCHING
                                  MULTIPLES AND LINKS
                                  DEFINITIONS: DEGENERATION, AVAILABILITY, AND GRADING
                                  THE CROSSBAR SWITCH
                                  SYSTEM CONTROL
                                  PABX and STORED-PROGRAM CONTROL
                                  CONCENTRATORS, OUTSIDE PLANT MODULES, REMOTE SWITCHING,

                                      AND SATELLITES
                                  TRANSMISSION FACTORS IN SWITCHING
                                  ZERO TEST LEVEL POINT
                                  NUMBERING CONCEPTS FOR TELEPHONY
                                  TELEPHONE TRAFFIC MEASUREMENT
                                  DIAL-SERVICE OBSERVATION

           Second Week:
                 • NETWORK TRANSMISSION:
                                  Why Digital Transmission?
                                  Digital Channel Banks
                                  Multiplexers
                                  Line Coding
                                  Pulse and Timing Restoration
                                  More Line Codes

                • VOICE-OVER IP:
                                  DATA TRANSMISSION VERSUS CONVENTIONAL TELEPHONY
                                  DRAWBACKS AND CHALLENGES FOR TRANSMITTING VOICE ON

                                      DATA PACKETS
                                  VOIP, INTRODUCTORY TECHNICAL DESCRIPTION
                                  VoIP Gateway
                                  An IP Packet as Used for VoIP
                                  The Delay Trade-off
                                  Lost Packet Rate
                                  Concealment of Lost Packets
                                  Echo and Echo Control
                                  MEDIA GATEWAY CONTROLLER AND ITS PROTOCOLS
                                  Overview of the ITU-T Rec. H.323 Standard
                                  Session Initiation Protocol (SIP)
                                  Media Gateway Control Protocol (MGCP)
                                  Megaco or ITU-T Rec. H.248


                • ELECTRONICS: THE SET & THE CENTRAL OFFICE:
                                  The Conventional Telephone Set
                                  Switchhook
                                  Pulse Dialing
                                  Anti-Tinkle and Speech Muting
                                  Tone Dialing
                                  Transmitter
                                  Receiver
                                  Electromechanical Ringer
                                  The Hybrid Function
                                  The Electronic Telephone
                                  DC Requirements for the Local Loop
                                  Two-Way Speech Block Diagram
                                  Protection Circuits
                                  Speech Circuit
                                  DC Line Interface
                                  Transmitter and Receiver Sections
                                  Line Balancing
                                  Telephone Set Volume Compensation
                                  The Local Loop
                                  Conventional Central Office Interfaces
                                  Lineside Interface
                                  Trunkside Interface
                                  Combined Codec and Filter IC
                                  Electronic Crosspoint Switching
                                  Subscriber Loop Systems
                                  Digital Multiplexing Equipment