Hi, Matt and Asterisk gurus I encountered the same problem in my asterisk meetme. Whenever the 3rd person joins the meeting, it creates echo in the meeting, while 2 person meeting is fine. I am wondering if you can give me more hint on how to configure the mixer to have echo cancelled. We are using analog phones connected to asterisk TDM cards. Thanks a lot. Michael =======================================Hi, Oops, my bad. Turns out it was just mixer settings, feeding back through the soundcard. Sorry for the noise. Message: 14 Date: Wed, 03 Dec 2003 17:43:16 -0500 From: Matt Lawson <matt@1control.com> To: asterisk-users@lists.digium.com Subject: [Asterisk-Users] Echo cancel in MeetMe? Reply-To: asterisk-users@lists.digium.com I'm trying to put multiple Linphones and Snom 200's into a Meetme room. With two devices, echo is quite noticeable. With 3 or more it degenerates into white noise. Which part of the software is responsible for echo cancellation in a MeetMe room? Is it a setting on the phones themselves, or within Asterisk? And is this related to echo cancellation on the POTS lines?