Hi! Now my app, that use pjsip, is in the app store. When I installed it, I did found that pjsua could not initialize and stalls on pjsua_init. And I can't to debug distribution version. But other versions, include AdHoc works fine. Does anyone found similar problem? The code, I am using to initialize: pj_status_t status; /* Create pjsua first! */ status = pjsua_create(); if (status != PJ_SUCCESS) { NSLog(@"Error in pjsua_create()"); return; } /* Init pjsua */ pjsua_config cfg; pjsua_logging_config log_cfg; pjsua_config_default(&cfg); cfg.cb.on_incoming_call = &on_incoming_call; cfg.cb.on_call_media_state = &on_call_media_state; cfg.cb.on_call_state = &on_call_state; cfg.cb.on_reg_state = &on_reg_state; cfg.user_agent = pj_str("AppName"); cfg.thread_cnt=5; /* log config */ pjsua_logging_config_default(&log_cfg); log_cfg.console_level = 0; log_cfg.level = 5; log_cfg.msg_logging = PJ_TRUE; log_cfg.log_filename = pj_str("logfilename"); /* media config */ pjsua_media_config mediacfg; pjsua_media_config_default(&mediacfg); mediacfg.enable_ice = PJ_FALSE; status = pjsua_init(&cfg, &log_cfg, &mediacfg); Thank you all!