WP_API_FEATURE_DTMF_EVENTS  653 src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c #ifdef WP_API_FEATURE_DTMF_EVENTS
WP_API_FEATURE_DTMF_EVENTS  668 src/ftmod/ftmod_wanpipe/ftmod_wanpipe.c #ifdef WP_API_FEATURE_DTMF_EVENTS