Hi, What method does pjsip use to send OPTIONS packet to keep alive ? I see that pjsip does not send any OPTIONS packet to keep alive. My server send me OPTIONS packet every 30s. So to keep alive, which should send OPTIONS packet, the client or the SIP server ? -- 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/20130202/89faabed/attachment-0001.html>