diff --git a/channels/chan_misdn.c b/channels/chan_misdn.c
index 9c9720c214..710bb8b1c8 100644
--- a/channels/chan_misdn.c
+++ b/channels/chan_misdn.c
@@ -3825,7 +3825,9 @@ cb_events(enum event_e event, struct misdn_bchannel *bc, void *user_data)
 			case MISDN_CALLING:
 			case MISDN_DIALING:
 			case MISDN_PROGRESS:
-				
+			case MISDN_ALERTING:
+			case MISDN_PROCEEDING:
+			case MISDN_CALLING_ACKNOWLEDGE:
 				if (bc->nt) {
 					bc->progress_indicator=8;
 					tone_indicate(ch, TONE_BUSY);