Hi, I don't know where I got this function *nat_addr_changed*, (seems in version 1.12 but I am not sure). But it seems that it is not used anymore, right ? If so, how do we handle nat address changed ? Thanks! Qiulang -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130323/88d688ba/attachment-0001.html>