[Asterisk-Users] chan_capi: advice needed on isdn card

[Jeff Noxon]

Within the Eicon range, only the expensive Diva Server cards support
CAPI, and only the newer models (i.e. Diva Server BRI-2M PCI 2.0)
support echo cancellation.  Check the data sheet before you buy.

CAPI has plenty of latency, so you really do need echo cancellation.
The echo cancellation on my Eicon works wonderfully.

Regards,

Jeff

On Fri, Mar 14, 2003 at 10:20:07PM +0100, Chris Wetemans wrote:
> Since chan_capi now supports echo_cancellation on (some) eicon cards, i'm
> considering buying another isdn-card.
> 
> On the moment I'm using an old Teles card with isdn4linux, but i get a
> terrible echo when calling analog counterparts, and the delay is also quite
> heafty.
> 
> 1. If I get a (cheap) AVM-card (Fritz), and use CAPI, would the delay
> (latency) be so small that an echo isn't noticeable anymore?
> 
> 2. If the echo would still be noticeable would an EICON-card with echo
> cancellation on board help a lot?
> 
> 3. Which EICON-cards have echo cancellation and linux CAPI-support, the
> cheaper client cards( DIVA Pro, DIVA+CT,...) or the expensive Server cards
> (BRI-server, BRI-server voice, ....)
> 
> 
> Thanks, Chris
> 
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