[Asterisk-Users] Echo Cancelation on TE110P

Sean Cook scook at kinex.net
Fri Mar 3 08:16:24 MST 2006


In theory I would say I agree how ever in practice... I have a PBX
(Merlin Legend) that I am connected to via PRI (10 foot pre-fab'ed
cable) and I get intermittent echo on the voip side.   There is nothing
in between * and the PBX...

sean

On Fri, 2006-03-03 at 13:42 -0600, Michael Sampson wrote:
> It is my understanding that when you hear echo the problem is on the
> other end. So if a caller complains they hear echo that is something
> you should be dealing with, but if you hear echo that is the phone
> companies fault. Now with a normal phone, the phone company will only
> echo cancel long distance calls. For local calls the latency is not
> high enough to matter. But with VOIP the added latency creates echo
> even for local calls. I think the reason you hear it on some numbers
> and not others is that the phone companies are doing echo cancel on
> some of those calls and not on others.
> Michael Sampson
> Information Systems Manager
> Customer Contact Services
> msampson at yourccsteam.com
> 952-936-4000
> 
> 
> Kerry Garrison wrote: 
> > On a 55 station install onto a Cox PRI with a TE110P (Polycom 501
> > phones) a few users are complaiining about echo. According to the
> > users, the echo seems to be phone number dependant. They claim that
> > certain phone numbers have echo while others dont. Are there any
> > tuning parametes like there is for a TDM400 card? 
> >  
> > Kerry Garrison
> > Director of Technical Services
> > Tech Data Pros - Orange County's Mobile IT Service Provider
> > (949) 502-7819 x200 - kerryg at techdatapros.com
> > http://www.techdatapros.com 
> >  
> > 
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