> conclusion I reached is this: Codec Mis-Implementation. The g729 codec > on the Quintum box is marked as g729ab, which means annex a and b > complient. Now, if you were to lock the g729r8 codec on the Cisco (this > is what most VoIP carriers use), the Quintum will not be able to > negotiate the codec correctly. I've seen this in dozens of cases. If you want them to interoperate, you should enable g729ab on both sides. If the codec is marked as 'ab' it doesn't mean it will support g729, g729a, g729b, g729ab... Andrey. ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ List: Openh323gk-users@lists.sourceforge.net Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/