fio_channel_get_sig_status_t 490 src/include/freetdm.h typedef ftdm_status_t (*fio_channel_get_sig_status_t) FIO_CHANNEL_GET_SIG_STATUS_ARGS; fio_channel_get_sig_status_t 467 src/include/private/ftdm_core.h fio_channel_get_sig_status_t get_channel_sig_status;