Hi all I am new in pjsip, and I have some pb with the subscription, and I am using pjsip 1.0 Sequence : - I send subscription to server - I receive 200 Ok from server - I receive notification from server - My stack pjsip send 481 to server instead 200ok. And I didn't implement the callback on_rx_notify, because the default behavior is to send a 200 ok Other think that I don't understand ,when I implement the callback on_rx_notify , this callback is never triggered by the stack when receiving the notify Thanks in advance for your help. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100603/8f805592/attachment.html>