diff --git a/data/default.json b/data/default.json
index b64a85d..f1e78f1 100644
--- a/data/default.json
+++ b/data/default.json
@@ -59,6 +59,11 @@
           "type"       : "Sound",
           "effect"     : "phone-failure"
         },
+        {
+          "event-name" : "phone-outgoing-busy",
+          "type"       : "Sound",
+          "effect"     : "phone-outgoing-busy"
+        },
         {
           "event-name" : "timeout-completed",
           "type"       : "Sound",