--- pbx.c	2011-12-23 10:09:16.000000000 +0800
+++ pbxb.c	2012-08-06 16:41:59.504934919 +0800
@@ -9022,6 +9022,8 @@
 					goto outgoing_app_cleanup;
 				}
 			}
+                        if ( *reason == AST_CONTROL_HANGUP )
+                            res = 0; 
 		}
 
 	} else {