--- main/channel.c-orig	2007-04-27 13:09:42.000000000 -0300
+++ main/channel.c	2007-04-27 13:10:43.000000000 -0300
@@ -2612,6 +2612,10 @@
 			if (option_debug)
 				ast_log(LOG_DEBUG, "Unable to generate DTMF tone '%c' for '%s'\n", digit, chan->name);
 		}
+		ast_safe_sleep(chan, 100); /* XXX 100ms ... probably should be configurable */
+		if (chan->generator)
+			ast_playtones_stop(chan);
+
 	}
 
 	return 0;