Index: main/channel.c
===================================================================
--- main/channel.c	(revision 296306)
+++ main/channel.c	(working copy)
@@ -9057,6 +9057,12 @@
 	ast_queue_control_data(chan, AST_CONTROL_REDIRECTING, data, datalen);
 }
 
+static int is_boolean_var_set(struct ast_channel *chan, const char *varname)
+{
+	char * val = pbx_builtin_getvar_helper(chan, varname);
+	return (val && ast_true(val));
+}
+
 int ast_channel_connected_line_macro(struct ast_channel *autoservice_chan, struct ast_channel *macro_chan, const void *connected_info, int is_caller, int is_frame)
 {
 	const char *macro;
@@ -9064,6 +9070,18 @@
 	int retval;
 
 	ast_channel_lock(macro_chan);
+
+	/*
+	 * If CONNECTED_LINE_*_BLOCK is set, don't update the connected line
+	 * and tell the caller it doesn't need to, either.
+	 */
+	if (is_boolean_var_set(macro_chan, is_caller
+		? "CONNECTED_LINE_CALLER_BLOCK" : "CONNECTED_LINE_CALLEE_BLOCK"))
+	{
+		ast_channel_unlock(macro_chan);
+		return 0;
+	}
+
 	macro = pbx_builtin_getvar_helper(macro_chan, is_caller
 		? "CONNECTED_LINE_CALLER_SEND_MACRO" : "CONNECTED_LINE_CALLEE_SEND_MACRO");
 	macro = ast_strdupa(S_OR(macro, ""));
@@ -9103,6 +9121,18 @@
 	int retval;
 
 	ast_channel_lock(macro_chan);
+
+	/*
+	 * If REDIRECTING_*_BLOCK is set, don't update the redirecting status
+	 * and tell the caller it doesn't need to, either.
+	 */
+	if (is_boolean_var_set(macro_chan, is_caller
+		? "REDIRECTING_CALLER_BLOCK" : "REDIRECTING_CALLEE_BLOCK"))
+	{
+		ast_channel_unlock(macro_chan);
+		return 0;
+	}
+
 	macro = pbx_builtin_getvar_helper(macro_chan, is_caller
 		? "REDIRECTING_CALLER_SEND_MACRO" : "REDIRECTING_CALLEE_SEND_MACRO");
 	macro = ast_strdupa(S_OR(macro, ""));