fio_channel_get_sig_status_t 709 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 495 src/include/private/ftdm_core.h fio_channel_get_sig_status_t get_channel_sig_status;