Hi all , I have read the pjsip_dev_guide.pdf, it is really good reference. The document mentioned about the detail process of the subscribe and notify . I am new to sip so I wonder to know Is there any examples for event framework (subscribe and notify ) of the pjsip lib ? Thanks in advance. Best regards, Kevin Liu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20091230/a8a5a485/attachment.html>