I performed a test with reference implementation (pjsua app) and it had handled this situation without any problems. So it is clear that the problem is in my code. I'm gonna try all the same with 1.4 version. P.S. I wanted to thank you guys for such a nice library! Well done! =) Cheers, Robert. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20091005/9f5b450d/attachment.html>