Vieri wrote: > According to this article: > http://www.audiodesignline.com/howto/206800151;jsessionid=UJRLVDJCJT2QMQSNDLPSKHSCJUNN2JVN?pgno=1 > I (on the Asterisk system) should take care of the remote user's echo issue, > ie. either my BRI card or my Asterisk add-on software should correctly echo > cancel.
No, that is not correct. The echo cancellers used in Zaptel/DAHDI/mISDN/etc. (software or hardware) are used to cancel the echo generated by the far end of the near end party's voice. In your example, any echo of your own voice (input via your SIP phone and sent out over the ISDN network) generated by the remote analog PSTN line would be cancelled so that you would not hear it. It is not possible to cancel echo that the far end party hears, it must be cancelled as near as possible to the device hearing the echo. -- Kevin P. Fleming Director of Software Technologies Digium, Inc. - "The Genuine Asterisk Experience" (TM) _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
