pjsua_config pjsua_cfg;

Hi guys, In my application I have used pjsip library without PJSUA, but when I try to send sip registration (register message) with pjsip_regc_send(.) application crash with segmentation fault. The only way to send correctly sip messages is to declare in header file: pjsua_config pjsua_cfg; pjsua_transport_config pjsua_transport_cfg; pjsua_acc_config pjsua_acc_cfg; But pjsua_cfg, pjsua_transport_cfg and pjsua_acc_cfg are never called in the application. Is it possible that this objects set some default parameter for transport or other variables in pjsip library? it's a really weird behaviour. Thanks in advice. Best Regards LL