Asterisk Help: Solving Common Echo Problems
Editor's Note: This was sent in from one of our readers Kerry Garrison with Tech Data Pros. It's a interesting read. Please subimit any questions or comments about this article.
Excerpt: You've played around with Asterisk and set yourself up a test system and everything works but you go into production with a TDM card connected to the phone lines and now the users are complaining about echo. There wasn't any echo on the old phone system or hooking up an analog phone, and your SIP trunks sound fine, so what is the problem?
The actual number of things that can cause echo and how to resolve them all could almost fill a book, instead we are going to look at the most basic echo canceling using the Zaptel drivers. This will solve "most" echo problems but will not work in every case, regardless it is the first tier approach to solving to problem. The procedures outlined in this article will work with Digium TDM analog or TE PRI cards.
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Written by Dal on August 21st, 2006 with
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