[Asterisk-Users] Echo in CAPI channels

[Robert Rozman]

Please keep us posted on progress. There are more users watching you :-).

Regards,

Robert.

----- Original Message ----- 
From: "Derek Conniffe" <derek at rivertower.ie>
To: "Asterisk Users Mailing List - Non-Commercial Discussion"
<asterisk-users at lists.digium.com>
Sent: Friday, October 29, 2004 5:08 PM
Subject: Re: [Asterisk-Users] Echo in CAPI channels


> Hi Peter,
>
> Ah yes - I get you now - sorry for misunderstanding and I think you've
> hit the nail on the head.
>
> I have a couple of budgetones and a Cisco 7940.  I do have a few FXS
> cards so I'll have to put one in the * server and see if there is no
> echo when I talk to someone on a remote POTS line - I'd say the "echo"
> will be gone.  For sure the echo I get is quick (and it could easily be
> 1/10th of a second which is about the time that you are suggesting).
> I'll also have to play with the capi.conf echo options and see if I can
> remove the echo that way.
>
> Thanks,
>
> Derek
>
> Peter Svensson wrote:
>
> >What do you have in your end was what I meant. What do you talk in? An
> >isdn phone? A pots phone? Those are really the only two options where you
> >do not have an added delay (actually, the zaptel cards add 1ms delay if
> >the call is cross-connected between cards). If you use a voip technology
> >phone such as a softphone or a hard ip phone you will have at an absolute
> >minimum an additional 40ms round trip time, but more realisitcally twice
> >that at least. That moves the echo from the sidetone to actually being
> >perceived as an echo.
> >
> >Peter
> >
> >
>
>
>
> Derek Conniffe
> Rivertower Ltd
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