--- channel.h	2004-05-18 16:27:22.000000000 -0400
+++ channel.h.merged	2004-05-18 16:34:39.000000000 -0400
@@ -232,6 +232,8 @@
 	/*! For easy linking */
 	struct ast_channel *next;
 
+        /* flag to avoid hangup during dual xfer */
+        int used_by_dual_xfer;
 };
 
 #define AST_FLAG_DIGITAL	1	/* if the call is a digital ISDN call */