Hi, who does this echo canceling if you use ordinary ISDN phone (you hear no echo) ?
Regards, robert. ----- Original Message ----- From: <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <[EMAIL PROTECTED]> Sent: Friday, October 29, 2004 1:12 PM Subject: Re: [Asterisk-Users] Echo in CAPI channels > > > On Fri, 29 Oct 2004, Derek Conniffe wrote: > > > I also get echo also but whats interesting is that I only get an echo if > > the person at the far end (via. the telephone company) is using an > > analogue phone line. If they are on ISDN or a cell phone there is no echo. > > > > I'm only using basic ISDN (not primary rate) connections with chan_capi > > and AVM Fritz PCI cards. I'd love to hear how to fix this. > > > > Derek > > > Hi Derek, > > Your practical experience exactly matches the theory. > > "Electrical echo" can be introduced when digital or 4-wire connections are > converted to two wire. > > ISDN and cell-phone is all digital. > > As for fixing it with chan_capi - not so easy. The latest chan_capi > (0.3.5) has only a very basic echo cancellation - configured using > "echosquelch" or "echocancel" in capi.conf. You could try adjusting > those and see if it helps. > > Steve > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
