ok-ok :-) I understand you. And I thank you for your "special" method setHD(); But only ONE more question: Where may I put this method in PJSUA project and there should I call your "special" method setHD()? Thank you for reply :-) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20120330/1b784c65/attachment.html>