fio_span_get_sig_status_t 711 src/include/freetdm.h typedef ftdm_status_t (*fio_span_get_sig_status_t) FIO_SPAN_GET_SIG_STATUS_ARGS; fio_span_get_sig_status_t 497 src/include/private/ftdm_core.h fio_span_get_sig_status_t get_span_sig_status;