[Asterisk-Users] some EICON Diva 4BRI questions

[Armin Schindler]

On Fri, 21 Apr 2006, Klaus Darilion wrote:
> On Fri, April 21, 2006 12:33, David Waugh said:
> > Hello Klaus,
> ...
> > I haven't tried spandsp and a V-Series card as the card was not designed
> > for fax applications. As a result it has never been tested. If you want
> > to fax with the card then we would recommend a normal Diva Server card.
> >
> > It would probably work in a pass through scenario as just audio is being
> > relayed by the card. However, I have not tested this and could not
> > comment if this will work with a V-BRI card.
> >
> > Bascially if you are looking to do pure voice, then use a V-Series card.
> > If you want to do anything more than voice, then use a normal Diva
> > Server card.
> 
> Hi David!
> 
> You never know which kind of voice (human, modem, fax) will pass through
> the B channel. I guess handling pass-trough modem calls should work, if
> they card will disable the echo canceller on detection of the "special
> tones" used in modem conversations. Do they?

The echo-chanceler can do that, but chan-capi disables echo-cancel on bridge 
anyway. So on bridge no data is modified.

Also the automatic disable of echocancel on e.g. a fax-tone when using a 
software fax can be configured as option in capi.conf of chan-capi.

Armin