void linphone_core_set_sound_source(LinphoneCore *lc, char source);
void linphone_core_set_ring(LinphoneCore *lc, const char *path);
const char *linphone_core_get_ring(const LinphoneCore *lc);
+void linphone_core_set_root_ca(LinphoneCore *lc, const char *path);
void linphone_core_set_ringback(LinphoneCore *lc, const char *path);
const char * linphone_core_get_ringback(const LinphoneCore *lc);