Table of Contents:

Definition and Overview

1. History of Echo Cancellation

2. Types of Echo

3. Causes of Echo

4. The Combined Problem on Digital Cellular Networks

5. The Process of Echo Cancellation

6. Controlling Acoustic Echo

7. Controlling Complex Echo in a Wireless Digital Network

8. Room for Improvement in the Handset

9. The Future of Echo-Cancellation Technology

Self-Test

Glossary

PDF of this tutorial

New digital cellular networks and network scenarios reflect a significant change taking place in the operation of echo cancellers. Instead of being a means of simple echo control, echo cancellers have now become highly sophisticated transmission equipment at the center of highly complex networks. Network operators and telcos implementing echo cancellation across their networks will hold the key to improved call quality, directly impacting their ability to provide enhanced network performance, maintain customer loyalty, increase talk time revenues, and reduce subscriber churn.