Hi, I am wrking on a iOS Voip app using pjsip, Am stuck on how to use echo cancellation, any help is appreciated. Regards -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130926/4c7e2856/attachment-0001.html>