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Definitive H.323 for engineers

A 2 day
training course

H.323 training course description

A hands on course covering IP telephony with H.323. The course starts with a brief review of knowledge students should already possess including RTP and RTCP. The main focus is on H.323 protocols though, progressing from what H.323 is through signalling, call processing and architectures, moving onto more advanced issues including security, multimedia, conferencing, and interoperability. Hands on practicals follow each major theory session.

Key outcomes from this course

By the end of the course delegates will be able to:
  • Explain how H.323 works.
  • Analyse H.323 packets.
  • Deploy H.323 IP telephony solutions.
  • Integrate H.323 with other telephony solutions.

H.323 training course details

Who will benefit:
Technical staff working with H.323
Voice Over IP
2 days

Training approach

This structured training course seeks to build upon workbook learning through the use of group exercises, dynamic discussion and individual tasks in order to deliver an engaging and interactive module that will ensure all candidates are able to transfer their new skills into the workplace.

Overall rating:

Customer review

"Hard concepts were explained very simply."
J. S. Framestore CFC
"Excellent presentation - very good course structure."
B. M. London Internet Exchange

H.323 training course contents

VoIP review
Brief review of VoIP, IP, telephones and voice. RTP, RTCP, mixers and translators.

What is H.323?
The framework, Why H.323, history, H.323 standards and the ITU, H.323 versions 1,2,3,4, and 5, Annexes and Appendices, capabilities, services, How H.323 works, a basic call.

H.323 protocol stack
The overall framework, Audio codecs (H.7xx), Video codecs (H.26x), T.120 data conferencing.

H.323 Architecture
Endpoints: Terminals, MCUs, gateways. Gatekeepers, border and peer elements, design issues, signalling with and without gatekeepers.

Packet format, ASN.1, Information elements, Call setup, Call control.

Gatekeeper features, admissions, address translation, bandwidth management, call routing, zones, administrative domains, gatekeeper discovery, call establishment, fast connect. RAS packet formats, RAS signalling. Alternate gatekeepers.

Purpose, call control channel, relationship with H.225, message format, tunnelling.

H.323 Supplementary services
Conferencing: point to point, multipoint, hybrid, broadcast, H.332. H.450.x. Call transfer, diversion, hold and waiting. Remote device control (H.282, H.283). Capability exchange, Video.

H.235. Authentication, privacy, transport layer level security.

Gateways, Inter working with PSTN, SIP and H323. H.246.

Annexes and Appendices
An overview

Why Choose Us

SNT trainers score an average of over 90% on the three main areas of:
  • Ability to teach
  • Technical knowledge
  • Answering questions
“Excellently presented by a very knowledgeable and enthusiastic trainer.” P.D. General Dynamics

We limit our maximum class size to 8 delegates; often we have less than this. This ensures optimal interactivity between delegates and instructor.
"Excellent course. The small class size was a great benefit…" M.B. IBM

We write our own courses; courseware does not just consist of slides and our slides are diagrams not bullet point text. A typical chapter provides clearly defined objectives with a chapter overview, slides with text underneath, a quiz at the end to check the learning of the students. Hands on exercises are at the end and are used to reinforce the theory.

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