Voice over IP

2 Day Course

This course has been retired. Please view currently available Voice over IP VOIP Training Courses.


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Introduction to VoIP (5 topics)

  • Voice and Data convergence, VoIP implementations
  • Telephony Overview
  • Analogue bandwidth, Codecs, Telephone numbering, Delay & Echo, Circuit Switched Networks, Time Division Multiplexing, Digital signalling
  • Packet Switching Overview
  • Local Area Networks, Ethernet, Internet Protocol, IP routing, TCP, UDP, Ports

VoIP Overview (7 topics)

  • Standards & protocols, Speech coding & compression, Network loading
  • Voice Quality & Qos Issues
  • Delay & jitter, Packet loss, Echo cancellation, Packet size, IEEE 802.p/q, IP precedence
  • The RTP header, RTCP packet types, SDES, RTSP, Mixers and Translators
  • H.323
  • H.323 versions & features, The H.323 protocol stack, H.323 Architecture, Terminals, Gateways, Gatekeepers, MCU's, Directory services, H.323 conferencing, Registration, Administration, Status, H.323 Call establishment

Session Initiation Protocol (5 topics)

  • The SIP protocol stack, SIP Architecture, User Agents, Proxy Servers, Registrar Servers, Gateways, SIP Addressing, SIP Messages, SIP Call establishment, Session Description Protocol, SIP-T, ENUM, Comparison between SIP and H.323
  • MGCP
  • The Protocol stack, Gateways, Endpoints and Connections, Call establishment, Interworking between MGCP and SIP
  • H.248/MEGACO
  • The Protocol stack, Gateways, Terminations and Contexts, Call establishment, Interworking between H.248/MEGACO and SIP

VoIP Security (1 topic)

  • Security issues, DOS attacks , eavesdropping, spoofing, Firewalls


Network Planners, Designers and Engineers requiring an understanding of Voice over IP. Those requiring a comprehensive overview of how voice may be integrated into IP networks An understanding of TCP/IP would be an advantage but is not essential as basic TCP/IP is discussed

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

Solutions Engineer, Akamai

Excellent course, very clear and well organised. Course content delivery was very good.”

Assistant Engineer, Dhiraagu

Very informative and appropriate.”

Network Support Technician, BT

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