[Asterisk-Users] Echo Canceller question- is there a viable solution?

[Eric Bishop]

I am running CVS HEAD. How can I tell which software echo canceller I am
using?

On 10/28/05, Matthew Fredrickson <creslin at digium.com> wrote:
>
>
> On Oct 27, 2005, at 12:38 AM, gw at adcomcorp.com wrote:
> > My question is, what is the direction in relation to analog boards and
> > such?
>
> Right now, it looks like the current fad of the asterisk group is
> hardware echo
> cancelation. However, there is work that is occurring on the software
> echo
> cans to improve them. In fact, I just committed basically an update to
> KB1
> (which was until now the latest and greatest version of MEC2) that is
> supposed
> to provide somewhat significant improvements.
>
> >
> > Quite a few people tend to have difficulties with echo, and although
> > the
> > WIKI has some very helpful advice, from a business standpoint I would
> > think that it would be an important step to come up with a final
> > solution to the problem.
> >
> > Many companies who make the higher end equipment seem to have tackled
> > the issue on their hardware.
> >
> > Do we know if digium is spending time on solving the issue? For
> > example, having a tool to run on a digium analog or t1 board to analyze
> > the line statistics and come up with the proper gain settings could be
> > extremely helpful.
> >
> > Such a tool would require a firm knowledge of the causes and solutions
> > to echo however, but I would assume that digium should have a grasp on
> > this.
> >
> > It just seems difficult to suggest to companies to use an asterisk
> > based
> > solution (if they do not use pri) when there is the possibility that an
> > installation will have issues with echo.
> >
> > At this point, it feels more like a trial experience to eliminate echo
> > in various environments.
>
> Unfortunately, that's the way it is right now. Getting to the point
> where you have
> enough knowledge to be able to work on these things is not an
> insignificant task.
> It seems like we're slowly getting there, and now that we have some
> more interest
> on improving the software echo cans we might be a little be closer to
> getting to the
> point where it "just works".
>
> >
> > I have used local tone from the CO to help narrow things down, but a
> > tool that would loop dial a line and do an analysis could reduce the
> > implementation time from days to hours.
>
> Well, there isn't anything that does the "whole job" right now.
> There's a bunch
> of pieces that go together, and if you have the necessary knowledge of
> how to
> put the pieces together, you can get pretty close to it "just working".
> It's not that
> bad though, one can also see it as job security as well :-)
>
> Matthew Fredrickson
>
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