I have installed pjsua_wince on different Windows Mobile 6.x devices and and it works fine. The new EC is basically better as the previous version. But i allready have the problem that the client still uses the external loudspeaker of the device ( as handsfree profile) The bulit-in voip client of M$ does the same. But other Voip client like http://www.o-fone.com/ can use the internal speeker ! I have tried with differnt playback_dev id in media lib but no success ! Are there other alternatives to fix it ? thanks -- GMX Kostenlose Spiele: Einfach online spielen und Spa? haben mit Pastry Passion! http://games.entertainment.gmx.net/de/entertainment/games/free/puzzle/6169196