[Asterisk-Users] Interface card for Euro-ISDN (BRI)

[Armin Schindler]

On Tue, 31 Jan 2006, Chris Stenton wrote:
> Can someone tell me the advantage in using an active card such as the AVM-B1
> do they have echo cancelling built in?
> Just that I've got three pots lines and keep thinking I should convert over to
> ISDN but I don't want to get echo issues.

The active cards do the ISDN protocol stuff on board, so the host CPU/driver 
does not need to do that -> better performance, less interrupts.
The AVM cards do not have such DSPs on board, so no echo-cancel.
But the Eicon DIVA Server cards do. They do analog Fax/Modem, echo-cancel,
DTMF-detection, voice codec, line interconnect/mixing even to other cards, 
... with the on boards DSP. chan_capi-cm is supporting most of the features
and will do more soon.

Armin

> Chris
> 
> ----- Original Message ----- From: "Armin Schindler" <armin at melware.de>
> To: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> Sent: Tuesday, January 31, 2006 11:35 AM
> Subject: RE: [Asterisk-Users] Interface card for Euro-ISDN (BRI)
> 
> 
> > On Tue, 31 Jan 2006, Mimmus wrote:
> > > Can anyone explain me differences among:
> > > - chan_capi (and chan_capi-cm)
> > 
> > If your card and its driver support a CAPI 2.0 interface,
> > you should use chan_capi-cm.
> > Eicon DIVA Server, AVM and some other which I don't know.
> > 
> > > - bristuff
> > 
> > I'm not the expert here, but AFAIK this is for HFC based cards only.
> > 
> > > - mISDN
> > 
> > This is for almost all passive cards (formaly HiSax driver). But there
> > are
> > others who know more here.
> > 
> > Armin
> > 
> > > ?
> > > 
> > > Thanks
> > > Mimmus
> > > 
> > > 
> > > > -----Original Message-----
> > > > From: asterisk-users-bounces at lists.digium.com
> > > > [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of
> > > > Kib Eki
> > > > Sent: Tuesday, January 31, 2006 11:12 AM
> > > > 
> > > > we are using the beronet cards together with mISDN, works stable
> > > > 
> > > > on system with digium and beronet we use bristuff
> > > > 
> > > > John Jensen wrote:
> > > > > Hi,
> > > > > I'm looking for an interface card for termination of
> > > > Euro-ISDN2 (BRI)
> > > > > lines.
> > > > > That is ISDN lines from the telco into my Asterisk box.
> > > > > 
> > > > > Any recommendations, good/bad expiriences ?
> > > > > 
> > > > > At present I'm looking at cards from BeroNet and Junghanns.
> > > > > 
> > > > > 
> > > > > Cheers,
> > > > > 
> > > > > John
> > > > > Faroese Telecom
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