--- main/channel.c-ORIG	2018-08-06 16:19:13.000000000 +0200
+++ main/channel.c	2018-08-06 16:28:57.000000000 +0200
@@ -4145,7 +4145,10 @@
 			if (ast_channel_writetrans(chan)) {
 				ast_translate(ast_channel_writetrans(chan), f, 0);
 			}
-			break;
+			// daktela change: ringing signal immediately
+            ast_frfree(f);
+            f = &ast_null_frame;
+			// break;
 		default:
 			/* Just pass it on! */
 			break;