[Freeswitch-users] Removing echo.

[covici at ccs.covici.com]

I think its the atas peopel are using -- vonage, etc. have specific ones
which apparently work and they have the settings locked down on both
sides.

Sean Devoy <sdevoy at bizfocused.com> wrote:

> I feel your pain.  The number one complaint from my customers switching to
> VOIP is the frequent presence of echo.  Many times the echo is quite quiet
> and is easily ignored.  Other times it is neither soft nor a short delay
> increasing the annoyance level.  (The number 2 complaint is delay in
> connecting to the number being called).
> 
>  
> 
> I have read LOTS of articles and blogs and wikis on the subject.  The
> prevailing wisdom seems to be:
> 
> 1.   The echo is always caused by the phone or equipment on the far end of
> your call!  Presumably the phone or device on the far end of the call does
> not have good echo cancellation.  My question is "If so, why is it ALMOST
> exclusively a VOIP problem?"  Also, for FS developers, "Why is it so much
> more prevalent than when I was on Vonage for years?"
> 
> 
> 
> 2.   VOIP is clearer than analog.  The times when nobody is speaking on VOIP
> can even cause "Are you still there?" questions.  That exacerbates the echo
> problem.  When the quite levels are SO quiet, a little echo goes a long way.
> 
> 
> 
> 
> 3.   A significant number people have just adopted the idea that "Echo is
> part of life, get used to it.  Also, tell the person you are talking to they
> need a phone upgrade."  I will attest to having had my business partner
> switch from speaker to handset to headphone and noticed a perceivable
> difference in echo levels.
> 
>  
> 
> So, Anthony et. al. is this something that COULD be addressed if we put a
> ransom on it or is it just beyond the scope of what can be done in FS?
> Analog providers and Vonage have addressed the issue to the point that
> people are content.  My customers are far from content.  I THINK we could
> raise some real money if this is fixable - I would start the pot with a
> couple of hundred bucks. On the other hand, I am ignorant of the underlying
> issues and those other folks may have very expensive hardware addressing the
> issue. Please educate me.
> 
>  
> 
> As a follow up question, does my VOIP topology affect this issue?  I use a
> fairly large, fast, dedicated server collocated at my primary VOIP provider
> for fastest connect speeds.  ALL of my users (and I) are remote connects.  I
> get varying levels of echo calling from my Cisco SPA504G in Baltimore to my
> partner on his Cisco504G in Milwaukee on the same FS box. Granted it is
> usually quite low levels in that scenario, but it is sporadically quite
> annoying.  The worst part is having NO ANSWER for (new) customers.
> 
>  
> 
> Sean
> 
>  
> 
> -----Original Message-----
> From: freeswitch-users-bounces at lists.freeswitch.org
> [mailto:freeswitch-users-bounces at lists.freeswitch.org] On Behalf Of Mimiko
> Sent: Sunday, March 17, 2013 8:49 AM
> To: FreeSWITCH Users Help
> Subject: Re: [Freeswitch-users] Removing echo.
> 
>  
> 
> Some one. Some thought about this?
> 
>  
> 
> --
> 
> Mimiko desu.
> 
>  
> 
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-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici at ccs.covici.com