[Asterisk-Users] more cpu intensive echo cancellers ?

[Gerard Saraber]

Thanks for the quick reply :)
It happens when we call a lot of different people, and obviously doesn't
happen with our old analog phone system, so even if its caused by
someone else, *we* still have to fix it.
we're kind of weighing our options, I'm hoping to take care of this with
some fancy software, but if not we'll be going the hardware canceller
route.

Thanks,
Gerard Saraber
gsaraber at rarcoa.com

On Wed, 2006-02-08 at 11:45 -0800, Michael Collins wrote:
> Gerard,
> 
> I'll bet your side is working great for echo cancellation.  It sounds
> like the equipment at the other end of the call might need some help.
> You know the old rule if you and I are talking on the phone: If I hear
> echo, you've got a problem; if you hear echo, I've got a problem.  If
> only all echo problems were so easy to diagnose!  In any case, is it
> possible that some of the echo you're hearing is being caused by poor
> echo handling on the other end of the line?
> 
> Just a thought.
> 
> -MC
> 
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Gerard
> Saraber
> Sent: Wednesday, February 08, 2006 11:03 AM
> To: Asterisk Users Mailing List
> Subject: [Asterisk-Users] more cpu intensive echo cancellers ?
> 
> Hi,
> I've had some decent luck with the mark3 echo canceller from the zaptel
> driver, echos on about 20% of the calls, people I've called say I sound
> great now, but our side hears echos.
> I was wondering if there was any way to tweak the current software
> cancelers into using more CPU (and hopefully doing a better job, close
> to a hardware canceler), I only have 10 lines, and a single call takes
> 0.5% cpu, I would have no problem if it went up to 5-10% if they would
> work better.
> Or should I just give up now and buy the channel bank, tellabs hardware
> echo canceler and a T1 pci card? (hope TDM400P cards have decent resale
> value ;)
> 
-- 
Regards,
Gerard Saraber
Network Admin, Rarcoa, Inc.
(630) 654-2580 x11
gsaraber at rarcoa.com