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

[Klaus-Peter Junghanns]

Morning Chris,

1. it's not predictable if you will get echo with the passive AVMs
(and probably also not predictable with the actives).

2. yes.

3. the passive Eicons (those without the word "server" in the name)
have no echo cancelation and not even a capi driver (so you're stuck
with i4l). but not all active Eicons support echo cancelation!
Bicster: can you shed some light on this? :-)

regards
kapejod

-- 
Klaus-Peter Junghanns

CEO,CTO
Junghanns.NET GmbH
Breite Strasse 13 - 12167 Berlin - Germany
fon:    +49 30 79705390
fax:    +49 30 79705391
iaxtel:	1-700-157-8753
email:  kpj at junghanns.net


Am Fre, 2003-03-14 um 22.20 schrieb Chris Wetemans:
> 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
>