Hi, My callback connected to config.cb.on_call_state (config of type pjsua_config), never catches a 402 Payment Required which is sent by the SIP server (as my colleague assures me). I only get a call_info.status PJSIP_INV_STATE_NULL (0), call_info.last_status is also PJSIP_INV_STATE_NULL, and that's it. How do I catch 402 and other errors, instead of just a PJSIP_INV_STATE_NULL. Thanks for listening! Cornelis = -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20101109/7a30d115/attachment-0001.html>