Hi, I'm trying to use pjsip presence to manage IM conference chat rooms. The problem is that when the SUBSCRIBE is sent it automaticaly contains Accept: application/pidf+xml, application/xpidf+xml. and I need to send 'conference-info+xml' in the NOTIFY. Every time a NOTIFY is sent containing conference-info+xml, pjsip responds with a 488 Not acceptable here. Is there a way to allow pjsip accept other content-types? such as the application/conference-info+xml that i MUST use? thanks Andr? Teixeira