[Asterisk-Users] Echo Cancellation

[Martin Joseph]

On Mar 14, 2006, at 9:04 AM, Keith Schmidt wrote:

> I have 3 POTS lines that I want to use with Asterisk, I am looking at 
> prices for FXO cards and the cards with echo cancellation are really 
> pricey... is echo cancellation really worth it for a 3 or 4 line 
> system?  Will I notice a difference without the echo cancellation?

This depends greatly on the quality of your PSTN line and the distance 
from the CO (central office).  In my case,  with a two wire loop over 
15000 feet,  I definitely had echo issues that made cheapo FXO 
unusable.

Although with a Digium card, you also have the option of using software 
based echo cancellation.  I have no experience with that.

Good echo cancellation is worth it in my opinion.
Marty