I am getting this message in log. warning rtp.c: Unable to set TOS to 184 While researching with google I came across this http://www.freepbx.org/trac/ticket/2770 It seems that asterisk needs to be recompiled to fix this. I also need to recompile with recent source that fixes a DTMF issue. http://bugs.digium.com/view.php?id=13209 While I am doing that how about getting iLBC in the mix too? Are there any problems in recomipliing asterisk in elastix? Can somebody please point out specific instructions for recompiling asterisk in Elastix distribution? I am running latest stable elastix 1.3.