asterisk users - May 2003 - Reduce echo?

Hi,

Just installed Asterisk+samples from yesterday's cvs with an ISDN card
(passive, Cologne HFC chipset, HiSax driver). When I leave a voicemail
for extension 1234 the echo is horrible. Is there a way to reduce the
echo in this setup? 

Probably buying a decent card like an Eicon Diva PCI and use chan_capi
drivers with echo_cancellation=on would improve things but I do not have
that card right now :)

Thanks,
Patrick

There's nothing you can do with that setup to reduce echo.

Some of the Eicon Diva Server cards do support echo cancellation.
There will still be echo on these cards for a few moments while the
echo cancellation sets up.  Because CAPI is a high-latency interface,
this is unavoidable.

On Thu, May 01, 2003 at 09:58:14PM +0200, Patrick wrote:
> Just installed Asterisk+samples from yesterday's cvs with an ISDN card
> (passive, Cologne HFC chipset, HiSax driver). When I leave a voicemail
> for extension 1234 the echo is horrible. Is there a way to reduce the
> echo in this setup? 
> 
> Probably buying a decent card like an Eicon Diva PCI and use chan_capi
> drivers with echo_cancellation=on would improve things but I do not have
> that card right now :)