Index: main/channel.c
===================================================================
--- main/channel.c	(revisión: 322543)
+++ main/channel.c	(copia de trabajo)
@@ -7103,7 +7103,7 @@
 		config->nexteventts = ast_tvadd(config->start_time, ast_samp2tv(config->timelimit, 1000));
 		if ((caller_warning || callee_warning) && config->play_warning) {
 			long next_warn = config->play_warning;
-			if (time_left_ms < config->play_warning) {
+			if (time_left_ms < config->play_warning && config->warning_freq > 0) {
 				/* At least one warning was played, which means we are returning after feature */
 				long warns_passed = (config->play_warning - time_left_ms) / config->warning_freq;
 				/* It is 'warns_passed * warning_freq' NOT '(warns_passed + 1) * warning_freq',