On 8/17/05, Michael Blood <[EMAIL PROTECTED]> wrote: > Agreed, this should be on the Users List. > My experience has been that PRIs have much less trouble. > The echo typcially comes from the analog to digital conversion.
No, it happens because of the impedence difference between 2 and 4 wire analogue lines which causes a reflection point - this is not possible on Digital lines. The only instance you'll get classis 'echo' is when calling from you ISDN to an analogue line on the far end. > I personally believe the reason for this is that the Analog to Digital > conversion that happens at the telco is done with much higher quality > equipment with much higher quality echo cancellation than if it is done on > your asterisk box. > > Here is an interesting read > http://www.voip-info.org/wiki-Asterisk+echo+cancellation > > Google Search: > site:voip-info.com echo cancellation > > Michael Regards Rob _______________________________________________ Asterisk-Biz mailing list [email protected] http://lists.digium.com/mailman/listinfo/asterisk-biz
