Hi Benny; I am trying to integrate Qt and pjsip .. I created QT thread to poll the pjsua handle events... When i catch the call back on_call_state PJSIP_INV_STATE_DISCONNECTED, i am changing the Qt gui .. But unfortunately after a while like 2 or 3 seconds.. pjsip gives error (*inv_state_handler[inv->state])(inv, e); Below is the call stack 2d646f6d() > Qtpjsip.exe!mod_inv_on_tsx_state(pjsip_transaction * tsx=0x02b055d4, pjsip_event * e=0x0342fd54) Line 562 + 0x17 bytes C Qtpjsip.exe!pjsip_dlg_on_tsx_state(pjsip_dialog * dlg=0x02cbb32c, pjsip_transaction * tsx=0x02b055d4, pjsip_event * e=0x0342fd54) Line 1907 + 0x1a bytes C++ Qtpjsip.exe!mod_ua_on_tsx_state(pjsip_transaction * tsx=0x02b055d4, pjsip_event * e=0x0342fd54) Line 179 + 0x11 bytes C Qtpjsip.exe!tsx_set_state(pjsip_transaction * tsx=0x02b055d4, pjsip_tsx_state_e state=PJSIP_TSX_STATE_TERMINATED, pjsip_event_id_e event_src_type=PJSIP_EVENT_TIMER, void * event_src=0x02b056d8) Line 1109 + 0x13 bytes C Qtpjsip.exe!tsx_on_state_completed_uac(pjsip_transaction * tsx=0x02b055d4, pjsip_event * event=0x0342fdac) Line 2936 + 0x14 bytes C Qtpjsip.exe!tsx_timer_callback(pj_timer_heap_t * theap=0x02aafe20, pj_timer_entry * entry=0x02b056d8) Line 1056 + 0x10 bytes C Qtpjsip.exe!pj_timer_heap_poll(pj_timer_heap_t * ht=0x02aafe20, pj_time_val * next_delay=0x0342fe0c) Line 518 + 0x10 bytes C Qtpjsip.exe!pjsip_endpt_handle_events2(pjsip_endpoint * endpt=0x02aafc7c, const pj_time_val * max_timeout=0x0342fe38, unsigned int * p_count=0x0342fe40) Line 690 + 0x10 bytes C++ Qtpjsip.exe!pjsua_handle_events(unsigned int msec_timeout=10) Line 1417 + 0x14 bytes C Qtpjsip.exe!PjsipPollThread::run() Line 29 + 0x7 bytes C++ QtCored4.dll!QThreadPrivate::start(void * arg=0x01689c4c) Line 235 C++ It always gives the address 2d646f6d ... Do you have any idea why this happens? ... Is it QT Pjsip integration issue.. ? Regards Muge -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100219/803832fe/attachment.html>