On Sunday 30 October 2005 16:45, Dave Grey wrote: > Is there any echo cancelation that I can enable or add for pure > IP<>IP calls?
No. There is no need because IP<-->IP calls are what is known as "four wire circuits" -- there is no mixing of the received audio and the send audio, and thus zero need for an echo canceller. You only need echo cancellation when you go from a 4-wire circuit to a two-wire circuit. > I frequently get bad echo on IAX2/ulaw connections between my CVS > HEAD and a friend's 1.2 Beta, using analog phones connected through > IAXys on both ends. Neither PBX has a zap interface. We understand You want echo cancellation on the IAXys then, and they do have some limited echo cancellation. > that this is primarily a problem with the acoustic/electric > properties of the telephones we are using, exacerbated in conditions > of higher latency, but is there a software canceler that I can apply > to the problem? Replacing the devices is not really an option. Unfortunately I don't know of anything at this point. You may be able to hack an echo canceller into chan_iax2 but I don' t know of any already-done solution. -A. _______________________________________________ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users