--- pbx.c.orig  2007-03-23 17:54:21.231321320 +0100
+++ pbx.c       2007-03-23 17:54:48.975103624 +0100
@@ -5580,7 +5580,9 @@ static int pbx_builtin_setamaflags(struc
 static int pbx_builtin_hangup(struct ast_channel *chan, void *data)
 {
        /* Just return non-zero and it will hang up */
-       if (!chan->hangupcause)
+       if (data)
+               chan->hangupcause = atoi(data);
+       else if (!chan->hangupcause)
                chan->hangupcause = AST_CAUSE_NORMAL_CLEARING;
        return -1;
 }