Echo Cancellation
- From: Martin Joseph <ast (at) stillnewt.org>
- Date: Tue, 14 Mar 2006 09:56:24 -0800
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
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