ring_state 339 src/ftmod/ftmod_wanpipe/wanpipe_tdm_api_iface.h int (*wp_ring_detect_event)(sng_fd_t fd, unsigned char ring_state); ring_state 340 src/ftmod/ftmod_wanpipe/wanpipe_tdm_api_iface.h int (*wp_ring_trip_detect_event)(sng_fd_t fd, unsigned char ring_state);