[Asterisk-Dev] Re: Echo cancel on PRI

[imran ahmed]

I guess I now understand,
Every response has a common point that PRIs by themselves are never a
source of echo(this isnt about t1 lines to channel banks). But the
other end of telco might go into echo sources such as hybrids or If
there is voip involed then poorly designed phones might themselves be
source of echo.
What ever the situation may be, it always makes sense to have echo
cancelers and use them where appropriate.

Thanks for all the suggestions.
Imran

On 11/22/05, Doug Meredith <doug.meredith at skyridge.com> wrote:
> imran ahmed <codentest at gmail.com> wrote:
>
> >Hi,
> >
> >The following link
> >http://www.digium.com/index.php?menu=faq#Echo_1
> >says that there is no echo on PRI.
>
> Well that is true, depending on how you look at it.  There is no echo
> *caused* by the PRI interface.  There very well may be an echo caused
> elsewhere on the PSTN.  Most likely at the far end in an analog
> connection, or due to acoustic coupling.
>
> Doug
> --
> Doug Meredith (doug.meredith at systemguard.com)
> SystemGuard - Oracle remote support
> 877-974-8273 (87-SYSGUARD)
> 506-854-7997
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>
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