echo cancellation / suppression in chan_capi & isdn4bsd by HPS

[Michael Iedema]

On 11/9/07, Oliver von Bueren <ovb at ovb.ch> wrote:
> Hi Michael
>
> Michael Iedema wrote:
> > - echosquelch - activates some "light" echo cancellation in the
> > chan_capi code itself
> >
> I have set this to yes in capi.conf (and only this, all others don't
> work for me at all)
>
> Next thing I did to improve the echo situation on calls from IP phones
> to ISDN is to change a default value in i4b_global.h from 9 to 10:
> #define I4B_ECHO_CANCEL_P_COMPLEX  (10)
> Without that, it was pretty bad and my wife complained!
>

That's interesting. I haven't had any echo on my lines so far but now
I have another "tool" in case I start to experience some.

-Michael