Training Course

VoIP Transmission, QoS, MPLS

  • 326
  • £995 +VAT
  • 1 day
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Why this VoIP course?

This Fast-Track VoIP Overview seminar provides an introduction to many of the concepts, the standards and terminology used in Voice over IP systems.

  • Get a Fast-Track overview of VoIP systems and technologies.
  • Understand the roles of SIP, H.323 and H.248/Megaco.
  • Understand voice coding, media coding and call signalling.
  • See VoIP systems in action – live in the classroom.
  • Understand IP Quality of Service issues when running a VoIP system.

VoIP Training Course Objectives

On completing this course, you will be able to:

  • On completing this VoIP course, attendees will also meet the pre-requisites for attending course 329: SIP Fundamentals.

Who should attend this VoIP course

  • Both Technical and Semi-Technical IT/Networking professionals wanting to understand the essential concepts begind Voice oevr IP (VoIP).

This course also provides the pre-requisite VoIP training for people wanting to understand VoIP using SIP (Session Initiation Protocol).

VoIP Course Pre-requisites

Delegates should have a good understanding of the TCP/IP protocol suite and IP addressing prior to attending this course

Lifetime Post-Course Support

After completing this VoIP training course, delegates receive lifetime post-training support from LEVER Technology Group, to help them apply the technologies and skills they have learned with us, to provide career-long support, and to ensure they are better equipped for their future roles in IT and networking.

VoIP Training Course Content

Overview of VoIP

  • Voice and data convergence
  • Components of a VoIP system
  • Standards employed in current VoIP solutions
  • The role of Voice Processing
  • The speech encoding process
  • Sampling, Quantisation, Coding, Framing
  • Silence suppression
  • Voice coding and compression standards
  • Adaptive encoding techniques
  • Coding fax signals
  • Voice codecs: G.711, G.722, G.721, G.723, G.726, G.723
  • Assessing voice quality
  • Mean Opinion Scores (MOS)
  • Detecting flaws in transmitted voice
  • Employing MOS ratings for codecs and real networks
  • Assessing Voice Quality
  • Measurable components
  • What to test and measure
  • P.800 / P.861 recommendations
  • PESQ

Operating Voice over IP

  • The issues when operating Voice over IP
  • Delay, Talker overlap, Echo
  • Jitter, Packet loss
  • Out of Order Delivery
  • The role of Voice Processing and DSP
  • Real-time Transport Protocol (RTP)
  • The role of RTP
  • RTP header in detail
  • RTP payload types
  • Real-time Transport Control Protocol (RTCP)
  • Conclusions

Introduction to Voice over IP signalling

  • Overview of signalling in PSTN networks
  • Overview of private network signalling
  • The major architectures and standards for Voice over IP
  • ITU H.323
  • IETF SIP
  • MGCP and Megaco/H.248
  • Cisco SCCP (Skinny)
  • VOIP in the enterprise
  • VOIP in PSTN Emulation Service (PES)

ITU / IETF Megaco / H.248

  • MGCP and Megaco
  • The Media Gateway Reference Architecture
  • End-to-End call setup
  • IETF Megaco
  • Megaco Terminations and Contexts
  • Megaco Commands
  • Megaco Packages
  • Megaco IP phone Media Gateway

Overview of IP QoS

  • Classifying IP traffic
  • Review of the IPv4 Datagram format
  • IPv4 Service (TOS) field
  • Precedence bits
  • DTR(C) bits
  • Characteristics of RTP media flows
  • Classifying packets in IPv6 networks
  • The need for QoS
  • IP Differentiated Services (Diff-Serv)
  • Queuing and Scheduling mechanisms
  • First-In First-Out (FIFO), Strict priority scheduling, Fair Queuing, Weighted-Fair Queuing (WFQ), Class-Based Queuing, Hierarchical Class Based Queuing (CBQ)
  • Coping with packet loss
  • Controlling admission
  • Employing Random Early Detection
  • Employing traffic shaping
  • IEEE 802.1p/Q
  • Operating IP over ATM networks
  • Overview of MPLS
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