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Introduction to Data Communications

The Introduction to Data Communications training course is an instructor led presentation course that provides a fundamental overview of the hardware, protocols and techniques used in the modern datacommunications environment.

This technical training course will familiarise delegates with the way that data is transported, how data networks operate and the protocols, so that delegates will gain awareness of datacomms concepts and the vocabulary in use.

The technical skills and knowledge gained through the theory and practical training sessions can be used as a starter course before moving on to other more advanced data communications training courses.

Target Audience:

This is a foundation level course, ideal for anybody with an interest in Data Communications, as such no special prerequisites are necessary other than the desire to learn!

The course is generic in nature and is aimed at both technical and non-technical professionals new to the data environment.


Learning Objectives

At the end of this course you will be able to understand:

  • The various techniques used in data communications
  • The standards and protocols in use in Data networks
  • The fundamental concepts of telephone networks
  • Analogue to digital to analogue conversion
  • Internet connectivity
  • Mobile Data networks
  • Convergence

Course Content

Chapter 01 - Introduction


  • Describe Data Communication
  • Explain Binary codes
  • Define connection types
  • Describe VPN's


  • Data Communication Overview
  • Binary
  • Binary Codes
  • Serial Transmission
  • Communications
  • Different Types of Connection
  • Communication Modes
  • Why Data Communications
  • Available Connections
  • Protocol
  • What is a Private Network?
  • What is a Virtual Private Network?

Chapter 02 - Standards


  • Explain Data rates terminology
  • Describe the difference between a DTE & DCE
  • Describe Flow control
  • Explain Synchronous and Asynchronous protocols


  • Standards
  • Communication between Devices
  • Standards for Data Transfer
  • Physical Interfaces
  • Electrical Interfaces
  • Functional Interfaces
  • Universal Serial Bus
  • Software Flow Control
  • Hardware Flow Control
  • OSI Concepts
  • The Layers of the OSI

Chapter 03 - Local and Wide Area Networks


  • Define network types
  • Describe LAN Addressing
  • Describe Ethernet
  • Explain LAN hardware types


  • LAN Definition
  • LAN Standards
  • LAN Topologies
  • Ethernet
  • Token Passing
  • Token Ring
  • FDDI
  • LAN Addressing
  • LAN Frames
  • Typical Connectivity
  • LAN cabling
  • Hubs
  • Bridges
  • Switches
  • WANs - Extending Beyond LANs
  • Wide Area Networks

Chapter 04 - Introduction to TCP/IP


  • Explain Internet Protocol
  • State the governing bodies
  • Explain Routing
  • Explain TCP concepts


  • Packet Switched Networks
  • WAN Architecture
  • Internet Protocol
  • Internet Protocol Addressing
  • Routers
  • Routers and Routing
  • Static Routing
  • Dynamic Routing
  • Dynamic Routing Protocols
  • Transport Protocols
  • TCP Concepts
  • User Datagram Protocol (UDP)
  • Domain Name Service

Chapter 05 - Analogue & Digital Voice


  • Explain voice basics
  • Describe telephone networks
  • Explain modulation
  • Explain compression techniques


  • Telephone Beginnings
  • Overview of the PSTN
  • Circuit Switched Networks
  • End-to-End Connection
  • The Local Loop
  • Voice Basics
  • Bandwidth
  • Analogue to Digital
  • Pulse Code Modulation (PCM)
  • Digital to Analogue
  • The Modem
  • Quadrature Amplitude Modulation(QAM)
  • Data Compression
  • Baseband and Broadband

Chapter 06 - Remote Access


  • Describe access techniques
  • Describe ISDN
  • Explain ISDN signalling
  • Explain the advantages of ISDN


  • Access via the PSTN
  • Integrated Service Digital Networks
  • ISDN Types
  • Basic Rate Interface (BRI)
  • Primary Rate Interface (PRI)
  • Signaling
  • Direct Dialing In (DDI)
  • ISDN Applications
  • Benefits of ISDN
  • Advantages of ISDN

Chapter 07 - UK Private Circuits


  • Describe PCM
  • Explain multiplexing
  • Describe PDH
  • Describe SDH


  • Pulse Code Modulation
  • 64kbits/s Leased Lines
  • Basic Time Division Multiplexing
  • N x 64k
  • Statistical Time Division Multiplexing
  • Multiplexer Summary
  • 30 Channel PCM Frame
  • E1 Leased Lines
  • Typical Connectors
  • Transmission Technologies
  • The PDH Multiplexer Mountain
  • PDH - Limitations
  • Synchronous Digital Hierarchy
  • SDH Operation
  • SDH Bus Structured System
  • SDH Advantages

Chapter 08 - Virtual Private Networks


  • Describe what a VPN is
  • Describe different VPN types
  • Explain the various technologies in use


  • Virtual Private Networks (VPNs)
  • Benefits of a VPN
  • VPN Features
  • VPN components
  • VPN security components
  • Point to Point Protocol
  • Point to Point Tunnelling Protocol
  • Layer 2 Tunnelling Protocol
  • IPSec

Chapter 09 - Frame Relay


  • Describe Frame Relay networks
  • Describe the Frame Relay structure
  • Explain traffic management


  • Frame Relay Access
  • PVCs and SVCs
  • The Frame Relay Frame structure
  • Link Layer Address structure (DLCI)
  • Congestion Indicators (FECN and BECN)
  • Discard Eligibility (DE)
  • Traffic contracts and parameters
  • CIR Management
  • Voice over Frame Relay (VoFR)
  • Video over Frame Relay

Chapter 10 - Asynchronous Transfer Mode


  • Describe ATM networks
  • Describe ATM cells
  • Explain ATM virtual connections


  • Introduction to ATM
  • The Cell
  • The ATM layer
  • The Physical layer
  • The ATM Adaptation Layer (AAL)
  • ATM Service Categories and Traffic Management
  • Virtual Paths and Channels
  • ATM Connections
  • Benefits and Features of ATM

Chapter 11 - Broadband Technologies


  • Explain the basic concepts DSL
  • Describe the local loop
  • Explain DSL standards
  • Describe other broadband techniques


  • Local loop technology
  • Local Loop Restrictions
  • Frequency Allocation
  • Asymmetric Digital Subscriber Line
  • How Does ADSL Work?
  • The DSLAM
  • ADSL Standards
  • G.lite G.DMT
  • BT IPStream Network Model
  • Symetric Digital Subscriber Line
  • Fibre to the node/curb/home
  • Broadband cable modems
  • Very High Bit Rate DSL

Chapter 12 - IP VPNs


  • Describe VPN's
  • Explain MPLS
  • Describe MPLS switching
  • Content
  • IP VPN
  • What is MPLS?
  • MPLS IP Voice
  • MPLS
  • Any-to-Any Solution
  • Labels
  • Label Substitution
  • MPLS Operation
  • Label Substitution

Chapter 13 - Mobile & Wireless


  • Describe mobile access systems
  • Explain mobile standards
  • Explain wireless networks


  • Wireless Access
  • Mobile Network Generations
  • Data through GSM
  • The Short Message Service
  • Wireless Application Protocol
  • General Packet Radio Service
  • UMTS (3G)
  • Bluetooth
  • WiFi
  • WiFi Standards
  • Considerations
  • Wi-Max
  • Wireless Networks Comparison

Chapter 14 - The Convergence Story


  • Describe Next Generation Networks
  • Explain NGN hardware
  • Explain VoIP


  • The Big Picture
  • Simplified Networks
  • Converged Solutions
  • NGN - Simplified Network
  • Multi-Service Access Nodes
  • Metro Node
  • NGN - The Core
  • Voice over IP (VoIP)
  • Voice over IP Protocols

Further Study

  • Introduction to Networking
  • Introduction to TCPIP
  • Advanced TCPIP
  • Advanced Ethernet (Layer 2) Networking
  • Introduction to Tele Communications
  • Voice Over Internet Protocol And Convergence

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