1 files changed, 1 insertions, 0 deletions
diff --git a/include/asterisk/dsp.h b/include/asterisk/dsp.h
index ca6ab7da8..d335b18bf 100755
--- a/include/asterisk/dsp.h
+++ b/include/asterisk/dsp.h
@@ -41,6 +41,7 @@
 #define DSP_TONE_STATE_SPECIAL1	5
 #define DSP_TONE_STATE_SPECIAL2 6
 #define DSP_TONE_STATE_SPECIAL3 7
+#define DSP_TONE_STATE_HUNGUP 	8
 
 struct ast_dsp;