[asterisk-users] Echo...

[Matt]

Funny thing is.... now that I've been involved with VoIP for a while..
I hear echo on the regular PSTN :P   There are a few numbers I call
regularly that are out in podunk, PA.. and I can hear the echo on the
line.. hehe.

On 1/12/07, Andrew Kohlsmith <akohlsmith-asterisk at benshaw.com> wrote:
> On Friday 12 January 2007 1:42 pm, Ken Williams wrote:
> > Thanks for the tips, any ideas why either the power split or the card
> > slot would keep add echo, or at least make it so my echo settings
> > weren't taking?  As soon as I modified the hardware the echo was vastly
> > improved, then the minor modifications mentioned above wrapped it up.
>
> The power split would not have affected it in any way whatsoever; it's
> supplying power to the ringer circuitry only.
>
> The card slot could have moved the card to another IRQ which, depending on
> what else is in there, could have been causing enough of a delay in servicing
> the wctdm interrupt that it could have pushed the echo out beyond what the
> software echo canceller can handle.
>
> -A.
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