diff --git a/libs/openzap/conf/tones.conf b/libs/openzap/conf/tones.conf
index d7825b767e..e24ccccfcd 100644
--- a/libs/openzap/conf/tones.conf
+++ b/libs/openzap/conf/tones.conf
@@ -1,6 +1,18 @@
 [us]
-; tone_name => <tone script>:<tone detect freq>
-dial => %(1000,0,350,440):350,440
-ring => %(2000,4000,440,480):440:480
-busy => %(500,500,480,620):480:620
-attn => %(100,100,1400,2060,2450,2600):1400,2060,2450,2600
+generate-dial => %(1000,0,350,440)
+detect-dial => 350,440
+
+generate-ring => %(2000,4000,440,480)
+detect-ring => 440,480
+
+generate-busy => %(500,500,480,620)
+detect-busy => 480,620
+
+generate-attn => %(100,100,1400,2060,2450,2600)
+detect-attn => 1400,2060,2450,2600
+
+detect-fail1 => 913.8
+detect-fail2 => 1370.6
+detect-fail3 => 776.7
+
+