[asterisk-users] ECHO Cancellation in SIP Calls

[Conrad Wood]

> > I use SNOM 360, sometimes there is no echo (for example if i call myself 
> > via SIP->Asterisk->SIPProvider->TELEKOM->ISDN)
> > but if i call other people there occures Echo many times. The Routing is 
> > always the same :
> > SIP (SNOM) -> Asterisk -> VoIPProvider -> ISDN/POTS
> > 
> > Can i control the cancellation with the zapata.conf ?
> 
> Sure, but only for Zaptel channels. Not for mISDN channels. If you use
> ZapBRI, this would be the place to configure echo cancelling.
> 


The important bit is:
"I use SNOM 360, sometimes there is no echo (for example if i call
myself via SIP->Asterisk->SIPProvider->TELEKOM->ISDN) but if i call
other people[...]"

If *he* calls other people he's not going to use zap or misdn, as far as
he is concerned it is SIP all the way. (the voip provider puts it into
pots)

Conrad