File list (Check if you may need any files):
dtmf_src\####.wav
........\0.wav
........\10000ms.pk
........\10000ms.wav
........\13917529923.wav
........\18201998495.wav
........\18201998498.wav
........\182p.wav
........\189#.wav
........\1ms.wav
........\5.wav
........\500ms.wav
........\5555.wav
........\678.wav
........\77777.pk
........\77777.wav
........\8.wav
........\a.out
........\A.wav
........\Dtmf.c
........\Dtmf.c.bak
........\dtmf1.wav
........\dtmf_c
........\p.wav
........\s.wav
dtmf_src