diff --git a/modules/clan/phonebox/default.nix b/modules/clan/phonebox/default.nix
index 7455c42..704b4ca 100644
--- a/modules/clan/phonebox/default.nix
+++ b/modules/clan/phonebox/default.nix
@@ -266,7 +266,7 @@
                     in
                     ''
                       [from-internal]
-                      exten => 100,1,Answer()
+                      exten => 999,1,Answer()
                       same  =>     n,Playback(hello-world)
                       same  =>     n,Hangup()