Voice over IP course

This course provides a detailed treatment of the principles and operation of telephony services that operate over Internet Protocol (IP) networks - Voice over IP (VoIP).

Prerequisites:

An understanding of the operation and use of the Internet protocols. It is recommended that TransNet course F - "IP networks" is studied before attempting this course. It is also suggested that the learntelecoms course TransNet course G - "Advanced IP networks", which discusses quality of service issues relating to VoIP, is also studied before attempting this course.

Summary of topics covered:

Advantages of a Voice over IP (VoIP) service.

Basic principles of carrying voice samples in IP packets.

Effects of network impairments such as delay and jitter on a VoIP service and review of techniques that reduce transmission delays.

Voice encoding and processing inc. echo cancellation, compression and silence suppression, characteristics of encoder types and bandwidth requirements of a VoIP service.

Introduction to VoIP systems inc. introduction to the signalling protocols SIP and H.323, functions of call servers and gateways;

Review of VoIP service parameters inc grade of service, availability and post-dial delay.

Detailed treatment of VoIP systems that employ SIP.

Detailed treatment of VoIP systems that use the H.323 suite of protocols.


Number of chapters: 5   Study time: 5 hours

Download and view the MediaNet course summary in Adobe PDF format