int linphone_core_add_to_conference(LinphoneCore *lc, LinphoneCall *call);
int linphone_core_remove_from_conference(LinphoneCore *lc, LinphoneCall *call);
-int linphone_core_pause_conference(LinphoneCore *lc);
-int linphone_core_resume_conference(LinphoneCore *lc);
+bool_t linphone_core_is_in_conference(const LinphoneCore *lc);
+int linphone_core_enter_conference(LinphoneCore *lc);
+int linphone_core_leave_conference(LinphoneCore *lc);
#ifdef __cplusplus