On 24 Nov 2009, at 13:05, jefferson alexandre wrote:
> I'm running some asterisks in a small voip provider in Brazil and  
> we're having some problems with a analogic channel bank.
> When I make calls using  analogic extensions,  I have a crystal  
> clear quality, but the receptor have a lot of noise and echo.

Does the channel bank have onboard echo cancellation?

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