Hi all, What is UPDATE request? I see that when A call B, the INVITE 200 OK from B indicates that A is the refresher. And A send UPDATE request every 50 seconds. Is UPDATE request related to Session timer (RFC 4028) ? -- Khoa Pham HCMC University of Science Faculty of Information Technology -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130227/79a33278/attachment-0001.html>