Index: asterisk-13.7.2/main/features.c
===================================================================
--- asterisk-13.7.2.orig/main/features.c
+++ asterisk-13.7.2/main/features.c
@@ -646,6 +646,14 @@ int ast_bridge_call_with_flags(struct as
 
 	ast_bridge_basic_set_flags(bridge, flags);
 
+	ast_channel_lock_both(chan, peer);
+	if (!ast_channel_tech(chan)->send_digit_begin && !ast_channel_tech(peer)->send_digit_begin) {
+		ast_set_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
+		ast_set_flag(ast_channel_flags(peer), AST_FLAG_END_DTMF_ONLY);
+	}
+	ast_channel_unlock(chan);
+	ast_channel_unlock(peer);
+
 	/* Put peer into the bridge */
 	if (ast_bridge_impart(bridge, peer, NULL, peer_features,
 		AST_BRIDGE_IMPART_CHAN_INDEPENDENT | AST_BRIDGE_IMPART_INHIBIT_JOIN_COLP)) {
@@ -670,6 +678,8 @@ int ast_bridge_call_with_flags(struct as
 	if (ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_ASYNCGOTO) {
 		res = 0;
 	}
+
+	ast_clear_flag(ast_channel_flags(chan), AST_FLAG_END_DTMF_ONLY);
 	ast_channel_unlock(chan);
 
 	ast_bridge_features_cleanup(&chan_features);