Overview

This is an overview of the Voice over Internet Protocol and the move toward data and voice convergence. It includes the protocols used in VoIP including the signalling and bearer systems. It is an instructor led course with practical exercises.

Target Audience:

This is a foundation level course, ideal for anybody with an interest in Convergence.

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Prerequisites

  • No formal prerequisites are necessary other than the desire to learn! The course supports both the Intro to Data, and Tele Communications courses.

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Delegates will learn how to

During this course you will:

  • Gain an understanding of the development of Tele communications
  • Gain an understanding of the development of Data communications
  • Learn about Packet Switched Networks
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Outline

Chapter 1 - Introduction to VoIP

  • Voice networks
  • Data Networks
  • Voice and Data convergence
  • Hybrid networks
  • Voice over IP
  • VoIP implementations

Chapter 2 - Telephony Overview

  • Analogue bandwidth
  • Codecs
  • Pulse Code Modulation
  • Telephone numbering
  • Delay & Echo
  • Circuit Switched Networks
  • Time Division Multiplexing
  • Digital signalling

Chapter 3 - Packet Switching Overview

  • Local Area Networks
  • Ethernet
  • Internet Protocol
  • IP routing
  • TCP
  • TCP connections
  • UDP
  • Port numbering
  • DHCP
  • DNS

Chapter 4 - VoIP Overview

  • Standards & protocols
  • Speech coding & compression
  • Network loading

Chapter 5 - Voice Quality and QoS Issues

  • Delay & jitter
  • Packet loss
  • Echo cancellation
  • Packet size
  • IEEE 802.p/q

Chapter 6 - RTP / RTCP

  • The RTP header
  • RTCP packet types
  • SDES
  • RTSP
  • Mixers and Translators

Chapter 7 - H.323

  • H.323 versions & features
  • The H.323 protocol stack
  • H.323 Architecture
  • Directory services
  • H.323 conferencing
  • Registration, Administration, Status
  • H.323 Call establishment

Chapter 8 - Session Initiation Protocol

  • The SIP protocol stack
  • SIP Architecture
  • SIP Addressing
  • SIP Messages
  • SIP Call establishment
  • Session Description Protocol
  • Comparison between SIP and H.323

Chapter 9 - VoIP Equipment

  • The IPPBX
  • VoIP Softwsitches
  • The VoIP Telephone
  • VoIP Applications
  • Skype & MSN
  • Microsoft Live Communicator
  • Computer based softphones

Chapter 10 - Media Gateway Control Protocol

  • Protocol stack
  • Gateways
  • MGCP Model
  • Call establishment
  • Interworking MGCP and SIP

Chapter 11 - H.248/MEGACO

  • Protocol stack
  • Gateways
  • H.248/MEGACO Model
  • Call establishment
  • Interworking MEGACO and SIP

Chapter 12 - Network Access & Security

  • Authentication
  • Call set-up security
  • Stateful Firewalls
  • NAT
  • Issues with Firewalls & NAT
  • VoIP Firewall & NAT issues
  • STUN & ICE
  • Proxy Servers
  • Securing voice on the LAN
  • VLANs & VPN's
  • IPSec with VoIP

Chapter 13 - Designing VoIP Networks

  • Issues
  • Key points
  • Wireless and VoIP
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