diff --git a/daemon/call.c b/daemon/call.c
index d8532f827..69267e1ae 100644
--- a/daemon/call.c
+++ b/daemon/call.c
@@ -3444,6 +3444,7 @@ void call_media_free(struct call_media **mdp) {
 	mutex_destroy(&md->dtmf_lock);
 	g_slice_free1(sizeof(*md), md);
 	g_queue_clear_full(&md->dtmf_recv, dtmf_event_free);
+	g_queue_clear_full(&md->dtmf_send, dtmf_event_free);
 	mutex_destroy(&md->dtmf_lock);
 	*mdp = NULL;
 }
diff --git a/daemon/codec.c b/daemon/codec.c
index 99d0abfd1..5aeab5cbb 100644
--- a/daemon/codec.c
+++ b/daemon/codec.c
@@ -2511,44 +2511,54 @@ static void delay_frame_manipulate(struct delay_frame *dframe) {
 
 	AVFrame *frame = dframe->frame;
 
-	if (is_in_dtmf_event(&media->dtmf_recv, dframe->ts, frame->sample_rate, media->buffer_delay,
-				media->buffer_delay))
-	{
-		struct call_monologue *ml = media->monologue;
-		enum block_dtmf_mode mode = dtmf_get_block_mode(dframe->mp.call, ml);
+	struct call_monologue *ml = media->monologue;
+	enum block_dtmf_mode mode = dtmf_get_block_mode(dframe->mp.call, ml);
 
-		switch (mode) {
-			case BLOCK_DTMF_SILENCE:
+	if (mode == BLOCK_DTMF_OFF)
+		return;
+
+	mutex_lock(&media->dtmf_lock);
+	struct dtmf_event *dtmf_recv = is_in_dtmf_event(&media->dtmf_recv, dframe->ts, frame->sample_rate,
+			media->buffer_delay, media->buffer_delay);
+	struct dtmf_event *dtmf_send = is_in_dtmf_event(&media->dtmf_send, dframe->ts, frame->sample_rate,
+			media->buffer_delay, media->buffer_delay);
+	mutex_unlock(&media->dtmf_lock);
+
+	if (!dtmf_send) {
+		if (!dtmf_recv)
+			return;
+		mode = BLOCK_DTMF_SILENCE;
+	}
+
+	switch (mode) {
+		case BLOCK_DTMF_SILENCE:
+			memset(frame->extended_data[0], 0, frame->linesize[0]);
+			break;
+		case BLOCK_DTMF_TONE:
+			frame_fill_tone_samples(frame->format, frame->extended_data[0], dframe->ts,
+					frame->nb_samples, ml->tone_freq ? : 400,
+					ml->tone_vol ? : 10, frame->sample_rate, frame->channels);
+			break;
+		case BLOCK_DTMF_ZERO:
+		case BLOCK_DTMF_DTMF:
+			// if we have DTMF output, use silence, otherwise use a DTMF zero
+			if (dframe->ch->handler->dtmf_payload_type != -1)
 				memset(frame->extended_data[0], 0, frame->linesize[0]);
-				break;
-			case BLOCK_DTMF_TONE:
-				frame_fill_tone_samples(frame->format, frame->extended_data[0], dframe->ts,
-						frame->nb_samples, ml->tone_freq ? : 400,
-						ml->tone_vol ? : 10, frame->sample_rate, frame->channels);
-				break;
-			case BLOCK_DTMF_ZERO:
-			case BLOCK_DTMF_DTMF:
-				// if we have DTMF output, use silence, otherwise use a DTMF zero
-				if (dframe->ch->handler->dtmf_payload_type != -1)
-					memset(frame->extended_data[0], 0, frame->linesize[0]);
-				else
-					frame_fill_dtmf_samples(frame->format, frame->extended_data[0],
-							dframe->ts,
-							frame->nb_samples, dtmf_code_from_char(ml->dtmf_digit),
-							ml->tone_vol ? : 10, frame->sample_rate,
-							frame->channels);
-				break;
-			case BLOCK_DTMF_RANDOM:
-				if (!media->dtmf_event_state)
-					media->dtmf_event_state = '0' + (ssl_random() % 10);
-				frame_fill_dtmf_samples(frame->format, frame->extended_data[0], dframe->ts,
-						frame->nb_samples, media->dtmf_event_state - '0',
-						10, frame->sample_rate,
+			else
+				frame_fill_dtmf_samples(frame->format, frame->extended_data[0],
+						dframe->ts,
+						frame->nb_samples, dtmf_code_from_char(ml->dtmf_digit),
+						ml->tone_vol ? : 10, frame->sample_rate,
 						frame->channels);
-				break;
-			default:
-				break;
-		}
+			break;
+		case BLOCK_DTMF_RANDOM:
+			frame_fill_dtmf_samples(frame->format, frame->extended_data[0], dframe->ts,
+					frame->nb_samples, dtmf_send->rand_code - '0',
+					10, frame->sample_rate,
+					frame->channels);
+			break;
+		default:
+			break;
 	}
 }
 static void delay_packet_manipulate(struct delay_frame *dframe) {
diff --git a/daemon/dtmf.c b/daemon/dtmf.c
index c2faab05a..0d82272cc 100644
--- a/daemon/dtmf.c
+++ b/daemon/dtmf.c
@@ -136,6 +136,10 @@ static void dtmf_end_event(struct call_media *media, unsigned int event, unsigne
 	*ev = (struct dtmf_event) { .code = 0, .ts = ts, .volume = 0 };
 	g_queue_push_tail(&media->dtmf_recv, ev);
 
+	ev = g_slice_alloc0(sizeof(*ev));
+	*ev = (struct dtmf_event) { .code = 0, .ts = ts, .volume = 0 };
+	g_queue_push_tail(&media->dtmf_send, ev);
+
 	if (!dtmf_do_logging())
 		return;
 
@@ -275,16 +279,20 @@ static void dtmf_code_event(struct call_media *media, char event, uint64_t ts, i
 	// check trigger before setting new dtmf_start
 	dtmf_check_trigger(media, event, ts, clockrate);
 
-	media->dtmf_event_state = 0;
 	ev = g_slice_alloc0(sizeof(*ev));
 	*ev = (struct dtmf_event) { .code = event, .ts = ts, .volume = volume };
 	g_queue_push_tail(&media->dtmf_recv, ev);
 
+	ev = g_slice_alloc0(sizeof(*ev));
+	*ev = (struct dtmf_event) { .code = event, .ts = ts, .volume = volume,
+		.rand_code = '0' + (ssl_random() % 10) };
+	g_queue_push_tail(&media->dtmf_send, ev);
+
 	mutex_unlock(&media->dtmf_lock);
 }
 
 
-bool is_in_dtmf_event(GQueue *events, uint32_t ts, int clockrate, unsigned int head,
+struct dtmf_event *is_in_dtmf_event(GQueue *events, uint32_t ts, int clockrate, unsigned int head,
 		unsigned int trail)
 {
 	if (!clockrate)
@@ -308,7 +316,7 @@ bool is_in_dtmf_event(GQueue *events, uint32_t ts, int clockrate, unsigned int h
 				continue;
 			// diff >= 0 and less than 10 seconds? that's a match.
 			if (start_diff <= cutoff)
-				return true;
+				return ev;
 			// anything else is a bad/outdated TS. stop.
 			break;
 		}
@@ -320,12 +328,12 @@ bool is_in_dtmf_event(GQueue *events, uint32_t ts, int clockrate, unsigned int h
 			if (end_diff == 0) // for end events, we wait until after the end
 				continue;
 			if (end_diff <= cutoff)
-				return false;
+				return NULL;
 			break;
 		}
 	}
 
-	return false;
+	return NULL;
 }
 
 
diff --git a/include/call.h b/include/call.h
index f79bc42a2..d7eca02cf 100644
--- a/include/call.h
+++ b/include/call.h
@@ -407,7 +407,7 @@ struct call_media {
 	unsigned long		dtmf_ts; // TS of last processed end event
 	// lists are append-only
 	GQueue			dtmf_recv;
-	unsigned int		dtmf_event_state;
+	GQueue			dtmf_send;
 
 #ifdef WITH_TRANSCODING
 	union {
diff --git a/include/dtmf.h b/include/dtmf.h
index 8f8b6c95c..2bf1c1587 100644
--- a/include/dtmf.h
+++ b/include/dtmf.h
@@ -19,6 +19,7 @@ struct dtmf_event {
 	int code; // char for start, zero for end
 	int volume;
 	uint64_t ts;
+	int rand_code; // state for random replace mode
 };
 
 void dtmf_init(void);
@@ -35,6 +36,6 @@ void dtmf_dsp_event(const struct dtmf_event *new_event, struct dtmf_event *cur_e
 enum block_dtmf_mode dtmf_get_block_mode(struct call *call, struct call_monologue *ml);
 bool is_pcm_dtmf_block_mode(enum block_dtmf_mode mode);
 bool is_dtmf_replace_mode(enum block_dtmf_mode mode);
-bool is_in_dtmf_event(GQueue *, uint32_t ts, int clockrate, unsigned int head, unsigned int trail);
+struct dtmf_event *is_in_dtmf_event(GQueue *, uint32_t ts, int clockrate, unsigned int head, unsigned int trail);
 
 #endif