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Introduction To Telecom: Voice, Data and Video

Who Should Attend

Individuals new to the telecommunications industry, new to a position, or in non-technical positions who wish to develop a basic understanding of the “how and why” of voice and data communications systems, networks and terminology; those who need to understand current networking alternatives and the impact of emerging technologies on business decisions and opportunities. While an introductory course, this seminar discusses many technical concepts involved in both data and voice networking.

What You Will Learn

  • Understand the communications industry structure, how it is evolving, and how it affects competition, pricing and new services.
  • Comprehend the fundamentals of voice, data and video communications technology, including industry buzzwords, from a vendor-independent perspective.
  • Learn the differences between analog and digital transmission, and the migration to a converged digital/optical networks for voice, data and video.
  • Study the components of voice networks, such as carrier switches, Routing, PBXs, T1 trunks, switched versus dedicated circuits, packet and wireless networks.
  • Study the components of data networks such as modems, virtual circuits, hubs, switches and routers.
  • Evaluate the differences between all the various access methods including DSL, cable MODEMs, wireless (cellular, WiMax, Wi-Fi), T1 and Carrier Ethernet.
  • Investigate private voice network design alternatives using tie-lines, Centrex, virtual private networks (VPN) and hosted services.
  • Understand PBX and IP-PBX features and voice traffic engineering
  • Master the basics of local, metropolitan and wide area networks (LANs, MANs and WANs), including the differences between network bridging/switching and routing.
  • Review the structure and capabilities of the public Internet and private Intranets.
  • Demystify technologies such as Frame Relay, ATM, MLPS, Ethernet and TCP/IP and determine each technologies impact on network design, communication capabilities and Quality of Service (QOS).
  • Study the benefits, drawbacks and technology behind Voice over IP (VOIP) using IP PBXs, IP phones and Internet Telephony Service Providers (ITSP) and IPTV.
  • Obtain a working knowledge of communications protocols and standards with an emphasis on their importance in network engineering and network operation.
  • Explore voice, data and video convergence with “triple play” and “quad play”.

Course Details

A. Brief History and Evolution of the Industry

  • Current and Future Structure of the Public Network (including Next Generation Networks)
  • Current Industry Trends (VOIP, Wireless services, Private Networks)

B. Network Components, Terms and Concepts

  • Transmission Fundamentals: The Electromagnetic Spectrum, Frequencies, Modulation, Bandwidth vs. Capacity
  • Types of Network Components and Circuits
  • Nodes: switches, LAN hubs, routers
  • Customer Premises Equipment (CPE)
  • Digital Cross-connect Systems (DCS)
  • Circuit Switched Networks, Packet Switched Networks and Dedicated Connections

C. Basic Voice Telephony

  • Basic Voice Characteristics (Pitch Volume) 
  • Analog transmission concepts (bandwidth, modulation) 
  • Digital Voice Transmission
  • Digital transmission concepts (capacity, bits-per-second)
  • Converting sound to digital signals (PCM, CODECS)
  • Compensating for Transmission Impairments (Attenuation, Noise, Delay, Jitter)
  • Voice over IP (VOIP)
  • D. Backbone and Access Circuits
  • Circuit Types
  • Media : Unshielded Twisted Pair (UTP) & Shielded Twisted Pair (STP)—Up to “Cat 7”
  • Media: Coaxial cable (coax)
  • Media: Radio (satellite, microwave, cellular) and Infrared
  • Media: Fiber optics: multi-mode fiber (MMF) & single-mode fiber (SMF)
  • Time Division Multiplexing (TDM) for Voice Connections: DS-1/T1
  • The North American Digital Hierarchy (DS-0, DS-1/T1, DS-3/T3)
  • The International Digital Hierarchy (E1, E3)
  • Optical-based Digital Circuit Standards
  • Synchronous Optical Network (SONET)
  • The International Synchronous digital Hierarchy (SDH)
  • Wave Division Multiplexing (WDM) 
  • Access: Analog subscriber lines
  • Access: ISDN: Integrated Services Digital Network (BRI,PRI)
  • Access: High Speed Digital access lines: T1/E1, T3/E3 and SONET
  • Access: Wireless services (Cellular, Wi-Fi, Wi-Max)
  • E. The Public Switched Telephone (PSTN)
  • Evolution of the Public Network
  • Effect of the various Telecommunications Acts and Regulations
  • Equal access procedures
  • Call Processing including Signal System 7 (SS7) and SIP
  • Migration from current PSTN network to IP based networks
  • F. Private Voice Networks
  • Private Network Topologies
  • Virtual Private Networks (VPN)
  • PBXs (Analog, Digital, IP and Hybrid)
  • Networked, distributed and wireless PBXs
  • Centrex (CO-Centrex, IP-Centrex)
  • PBX and Centrex Features
  • Automatic route selection (ARS)
  • Interactive voice response (IVR)
  • Voice recognition systems
  • Automated Call Distributors (ACD) and Contact Centers
  • Principles of Voice Traffic Engineering including Grade of Service (GoS)
  • G. Introduction to Data Networking
  • Voice, data and video communications requirements
  • Standards and Protocols: The OSI 7-layer Reference Model
  • Detecting and Correcting Bit Errors
  • Data Communications Using the PSTN
  • Analog subscriber lines and modems
  • ISDN data access
  • Wireless data access
  • H. Virtual Circuit-based Wide Area Networks
  • Contrast “Real” vs. “Virtual” Circuits
  • The virtual circuit concept
  • Advantages in network design, cost and management
  • Modern Virtual Circuit-based Networks
  • Standards and Protocols: IP, Frame Relay and ATM
  • Adding Quality of Service (QOS) with MPLS and VPNs
  • I. Local Area Networks (LAN)
  • Introduce Basic LAN Concepts and Terminology
  • Distance Limitations
  • Connectionless communications
  • LAN equipment: CPE, hubs, Network Interface card (NIC)
  • Ethernet LAN Fundamentals: Ethernet frame format, MAC address and the CSMA/CD access standard
  • Shared media vs. switched hubs, broadcast vs. multicast
  • Available bit rates of: 10M, 100M, 1G and 10G Ethernet
  • Other LAN Topologies and Protocols: Wireless Ethernet, Metro Ethernet, Token ring and FDDI
  • J. The Internet - Connectionless WANs/Routers
  • Routers and WAN Connectionless Networking
  • TCP/IP Protocol Stack
  • Address Resolution Protocol (ARP)
  • IP-based Networks (Internets, Intranets)
  • The Public Internet
  • Internet Service Providers (ISPs)
  • Network Access Points (NAPs)
  • Access alternatives (PSTN, DSL, cable, Enterprise Intranets)
  • Developments in High-speed Internet Access
  • Asymmetrical Digital Subscribe Lines (ADSL)
  • Symmetrical Digital Subscriber Lines (SDSL)
  • Cable modems
  • Introduction to Network Security
  • K. Network Convergence: The future of Voice, Data and Video
  • Voice Compression Technology—“Packet Voice”
  • Packet Voice Issues
  • Subscriber Line Access Convergence
  • Voice over cable
  • All wireless technologies (2.5G and 3G Cellular, Wi-Fi, Wi-Max and nitch wireless technologies.
  • Voice over IP (VOIP)
  • IP-enabled PBXs, IP PBXs, IP phones and media access gateways
  • IP voice quality of service (QOS) issues (delay, jitter, packet loss)
  • Multiprotocol Label Switching (MPLS)—an IP “virtual circuit”
  • Internet Telephony Service Provider (ITSP)

Course Leader: Zachary Cohen

 

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