Thanks guys I made the changes you suggested and i get no errors. I also want to ask, if an SIP application that somebody develops in official sdk will be executed in ipod. Be more specific if you overcome the problem that ipod doesn't have micro, and that you need to add an ipodsound.c file instead of iphonesound.c as described here <http://code.google.com/p/siphon/wiki/CompilationForiPhoneOS2_X> http://code.google.com/p/siphon/wiki/CompilationForiPhoneOS2_X what other problems would somebody face? thanks in advance George -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20081203/9ec4188a/attachment.html>