IP Telephony Bootcamp

Course Date & Venue
 
04 August - 08 August 2008 (Mon - Fri)
5-day Instructor-Led training, 0900 - 1700
Singapore, Singapore

Course Objectives

Course Overview
 
After years of research, development and implementation of several approaches, the Internet is becoming the only network providing universal connectivity and offering all kind of services. Among the newest services that users are expecting from the Internet we can find all multimedia-based applications, mainly IP Telephony. New protocols are being purposed by both, the ITU-T and the IETF organizations in order to transport signaling and voice over IP. However other issues such as quality of service, management and security are also as important and are being defined to get a full integration with legacy telephone networks. In this seminar you will learn the basics on Voice over IP, as well as the main protocol to transport media and different alternatives to signal an IP telephony call. Other topics, such as quality of service, and management are also covered. You will get an understanding of the architecture, components and services on an IP telephony system realizing advantages and difficulties of such a network.

Key Benefits
 

Course Pre-Requisites
Attendees must have a good understanding of IP and related protocols and a basic knowledge on telephony networks.

Who Should Attend?
  • Network Engineers, Network Operators, Network Managers or Network Designers who are responsible for designing, maintaining and operating IP services on public or private IP networks
  • Managers evaluating telecommunications related investments and the implementation of an IP telephony system in their organization
  • Pre- and post sales and support engineers in vendor organizations

Course Syllabus

1 Introduction

  • PSTN vs. IP Networks
  • What is VoIP, what is IP Telephony
  • Voice over IP evolution
  • Benefits and applications
  • Standardization
    • Main organizations: ITU-T, IETF, others
    • Main standards, H.323, H.248, RTP, SIP, MGCP, others

2 Real Time Transport Protocol

  • Motivation for a new protocol
  • Architecture
  • Header format
  • Payload types
  • RTCP: a control protocol
    • Control Packets: SR–RR–SDES–BYE
  • Compressed RTP

3 H.323 Recommendation

  • Defining H.323
  • Architecture and components
    • Endpoints
    • Gateways
    • Gatekeepers and zone management
    • MCUs: Multipoint control units
  • System operation
  • Protocols H.225, H.245, RAS
  • Call signaling
  • H.323 and IP networks
  • Basic call establishment
  • Conference establishment
  • H.323 versions

4 SIP Architecture

  • Definition
  • SIP Components: UAC, UAS, Servers (Proxy, Registrar, Redirect, Location service)
  • SDP
    • Protocol overview
    • Syntax and message structure
  • SIP basic methods
    • SIP methods
    • SIP messages and headers
    • SIP status and responses
    • SIP URI
  • SIP basic call flows
    • Call establishment
    • Call teardown
    • Registration

  • SIP new methods and services
    • SUBSCRIBE, NOTIFY, REFER
    • Presence and Instant Messaging
    • Other Supplementary services
    • Call Transfer using REFER
  • SIP conferences
  • QoS and SIP
  • Security and SIP
  • SIP Mobility

5 Signaling through media gateway control systems

  • Media and call control
  • Functions separation
  • Media gateway control requirements
  • Media gateway control protocols
  • MGCP
    • Definition
    • MGCP Model: endpoints, calls, and connections
    • Verbs, parameters and Responses
    • Packages
    • Basic call flows
  • H.248/Megaco
    • Definition
    • Connection Model: Terminations and contexts
    • Commands, responses, descriptors
    • Packages
    • Call establishment flow
  • MGCP and H.248 comparison

6 Interworking and Signaling Transport

  • Signaling basics
    • SS7 basic concepts
    • Q.931 basic concepts
  • Sigtran
    • Definition
    • System elements: MGU, MGCU, SGU
    • Architecture and topologies
    • Functional requirements
    • SCTP Protocol: Packet format and data transfer
    • Adaptation Modules
  • SIP-T
  • Basics on TRIP
  • Basics en ENUM

7 QoS on IP Networks

  • Defining QOS
  • QOS Requirements
  • Traffic control
  • Integrated services model
    • RSVP protocol
    • RSVP messages
    • RSVP styles
  • Differentiated services model
    • TOS
    • Diffserv
    • MPLS
    • IP over MPLS
    • QOS on MPLS
  • COPS
  • Congestion and recovery mechanisms