Hello, I try to develop a stereo back to back "user" agent conference server where simultaneously not only mono but also stereo clients can connect. B2BUA to be as much standard conform as possible (it's just an idea). Stereo clients means that the client sends mono to the server but gets a stereo signal back (upmixed by some tricks; see HRTF). I already found an blog article<http://blog.pjsip.org/2008/03/31/doing-it-in-stereo/>and a stereo.c<http://svn.pjsip.org/repos/pjproject/trunk/third_party/speex/libspeex/stereo.c>file telling me that this should be possible but as I already tried to develop this idea at freeswitch which seems not be be possible, I want to know from some pjsip expters if this project is really possible with the effort of a Bachelor Thesis (I want to program my own, of course). Thansk a lot MatzeMuc86 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20110224/40d04e9b/attachment.html>