Dear Pjsip support team, ??????? I found sometimes the "Contact Header" was different from "From Header" in Invite package via internet. It will cause sending ACK to incorrect caller ipaddr when response. How could I modify response caller's ip address in global variable "pjsua_var" after receive a invite package? Best regards, ??????? KennyChen -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20131212/0948a422/attachment-0001.html>