diff --git a/spa/plugins/bluez5/a2dp-codec-aac.c b/spa/plugins/bluez5/a2dp-codec-aac.c
index a82efe983..f4cbecd9b 100644
--- a/spa/plugins/bluez5/a2dp-codec-aac.c
+++ b/spa/plugins/bluez5/a2dp-codec-aac.c
@@ -286,7 +286,7 @@ static void *codec_init_props(const struct media_codec *codec, uint32_t flags, c
 		return NULL;
 
 	if (settings == NULL || (str = spa_dict_lookup(settings, "bluez5.a2dp.aac.bitratemode")) == NULL)
-		str = "0";
+		str = "5";
 
 	p->bitratemode = SPA_CLAMP(atoi(str), 0, 5);
 	return p;
@@ -380,8 +380,12 @@ static void *codec_init(const struct media_codec *codec, uint32_t flags,
 	// Fragmentation is not implemented yet,
 	// so make sure every encoded AAC frame fits in (mtu - header)
 	this->max_bitrate = ((this->mtu - sizeof(struct rtp_header)) * 8 * this->rate) / 1024;
-	this->max_bitrate = SPA_MIN(this->max_bitrate, get_valid_aac_bitrate(conf));
-	this->cur_bitrate = this->max_bitrate;
+	this->cur_bitrate = SPA_MIN(this->max_bitrate, get_valid_aac_bitrate(conf));
+	spa_log_debug(log, "AAC: max (peak) bitrate: %d, cur bitrate: %d, mode: %d (vbr: %d)",
+			this->max_bitrate,
+			this->cur_bitrate,
+			bitratemode,
+			conf->vbr);
 
 	res = aacEncoder_SetParam(this->aacenc, AACENC_BITRATE, this->cur_bitrate);
 	if (res != AACENC_OK)
@@ -391,6 +395,15 @@ static void *codec_init(const struct media_codec *codec, uint32_t flags,
 	if (res != AACENC_OK)
 		goto error;
 
+	// Assume >110 kbit/s as a "high bitrate" CBR and increase the
+	// band pass cutout up to 19.3 kHz (as in mode 5 VBR).
+	if (!conf->vbr && this->cur_bitrate > 110000)  {
+		res = aacEncoder_SetParam(this->aacenc, AACENC_BANDWIDTH,
+				19293);
+		if (res != AACENC_OK)
+			goto error;
+	}
+
 	res = aacEncoder_SetParam(this->aacenc, AACENC_TRANSMUX, TT_MP4_LATM_MCP1);
 	if (res != AACENC_OK)
 		goto error;
diff --git a/spa/plugins/bluez5/backend-native.c b/spa/plugins/bluez5/backend-native.c
index 64a4c25c1..1cb2235ff 100644
--- a/spa/plugins/bluez5/backend-native.c
+++ b/spa/plugins/bluez5/backend-native.c
@@ -904,7 +904,7 @@ static bool device_supports_codec(struct impl *backend, struct spa_bt_device *de
 {
 	int res;
 	bool alt6_ok = true, alt1_ok = true;
-	bool msbc_alt6_ok = true, msbc_alt1_ok = true;
+	bool msbc_alt6_ok = true, msbc_alt1_ok = true, lc3_a127_ok = true;
 	uint32_t bt_features;
 
 	if (device->adapter == NULL)
@@ -913,6 +913,7 @@ static bool device_supports_codec(struct impl *backend, struct spa_bt_device *de
 	if (backend->quirks && spa_bt_quirks_get_features(backend->quirks, device->adapter, device, &bt_features) == 0) {
 		msbc_alt1_ok = (bt_features & (SPA_BT_FEATURE_MSBC_ALT1 | SPA_BT_FEATURE_MSBC_ALT1_RTL));
 		msbc_alt6_ok = (bt_features & SPA_BT_FEATURE_MSBC);
+		lc3_a127_ok = (bt_features & SPA_BT_FEATURE_LC3_A127);
 	}
 
 	switch (codec) {
@@ -922,6 +923,10 @@ static bool device_supports_codec(struct impl *backend, struct spa_bt_device *de
 		alt1_ok = msbc_alt1_ok;
 		alt6_ok = msbc_alt6_ok;
 		break;
+	case SPA_BLUETOOTH_AUDIO_CODEC_LC3_A127:
+		alt1_ok = false;
+		alt6_ok = lc3_a127_ok;
+		break;
 	case SPA_BLUETOOTH_AUDIO_CODEC_LC3_SWB:
 	default:
 		/* LC3-SWB has same transport requirements as msbc.
@@ -986,8 +991,11 @@ static void make_available_codec_list(struct impl *backend, struct spa_bt_device
 
 	for (i = 0; backend->codecs[i]; ++i) {
 		const struct media_codec *codec = backend->codecs[i];
+
 		if (codec->kind != MEDIA_CODEC_HFP)
 			continue;
+		if (!spa_bt_get_hfp_codec(backend->monitor, codec->codec_id))
+			continue;
 		if (device_supports_codec(backend, device, codec->id))
 			codec_list_add(codec_list, codec);
 	}
diff --git a/spa/plugins/bluez5/bap-codec-lc3.c b/spa/plugins/bluez5/bap-codec-lc3.c
index b1b12cb78..881af4e14 100644
--- a/spa/plugins/bluez5/bap-codec-lc3.c
+++ b/spa/plugins/bluez5/bap-codec-lc3.c
@@ -1503,6 +1503,10 @@ static int codec_get_bis_config(const struct media_codec *codec, uint8_t *caps,
 	struct ltv_writer writer = LTV_WRITER(caps, *caps_size);
 	const struct bap_qos *preset = NULL;
 
+	uint32_t retransmissions = 0;
+	uint8_t rtn_manual_set = 0;
+	uint32_t max_transport_latency = 0;
+	uint32_t presentation_delay = 0;
 	*caps_size = 0;
 
 	if (settings) {
@@ -1511,6 +1515,14 @@ static int codec_get_bis_config(const struct media_codec *codec, uint8_t *caps,
 				sscanf(settings->items[i].value, "%"PRIu32, &channel_allocation);
 			if (spa_streq(settings->items[i].key, "preset"))
 				preset_name = settings->items[i].value;
+			if (spa_streq(settings->items[i].key, "max_transport_latency"))
+				spa_atou32(settings->items[i].value, &max_transport_latency, 0);
+			if (spa_streq(settings->items[i].key, "presentation_delay"))
+				spa_atou32(settings->items[i].value, &presentation_delay, 0);
+			if (spa_streq(settings->items[i].key, "retransmissions")) {
+				spa_atou32(settings->items[i].value, &retransmissions, 0);
+				rtn_manual_set = 1;
+			}
 		}
 	}
 
@@ -1537,9 +1549,9 @@ static int codec_get_bis_config(const struct media_codec *codec, uint8_t *caps,
 	else
 		qos->framing = 0;
 	qos->sdu = preset->framelen * get_channel_count(channel_allocation);
-	qos->retransmission = preset->retransmission;
-	qos->latency = preset->latency;
-	qos->delay = preset->delay;
+	qos->retransmission = rtn_manual_set ? retransmissions : preset->retransmission;
+	qos->latency = max_transport_latency ? max_transport_latency : preset->latency;
+	qos->delay = presentation_delay ? presentation_delay : preset->delay;
 	qos->phy = 2;
 	qos->interval = (preset->frame_duration == LC3_CONFIG_DURATION_7_5 ? 7500 : 10000);
 
diff --git a/spa/plugins/bluez5/bluez-hardware.conf b/spa/plugins/bluez5/bluez-hardware.conf
index d08ff0bb9..0148a4ee4 100644
--- a/spa/plugins/bluez5/bluez-hardware.conf
+++ b/spa/plugins/bluez5/bluez-hardware.conf
@@ -15,6 +15,7 @@
 #     sbc-xq            "nonstandard" SBC codec setting with better sound quality
 #     faststream        FastStream codec support
 #     a2dp-duplex       A2DP duplex codec support
+#     lc3-a127          HFP LC3-24KHz codec support
 #
 # Features are disabled with the key "no-features" whose value is an
 # array of strings in the match rule.
@@ -83,6 +84,12 @@ bluez5.features.adapter = [
     # Realtek Semiconductor Corp.
     { bus-type = "usb", vendor-id = "usb:0bda" },
 
+    # Mediatek MT7925, #pipewire-5213
+    { bus-type = "usb", vendor-id = "usb:0e8d", product-id = "~(e025)", no-features = [ lc3-a127 ] },
+    { bus-type = "usb", vendor-id = "usb:0489", product-id = "~(e111|e113|e118|e11e|e124|e139|e14e|e14f|e150|e151)", no-features = [ lc3-a127 ] },
+    { bus-type = "usb", vendor-id = "usb:13d3", product-id = "~(3602|3603|3604|3608|3613|3627|3628|3630)", no-features = [ lc3-a127 ] },
+    { bus-type = "usb", vendor-id = "usb:2c7c", product-id = "~(7009)", no-features = [ lc3-a127 ] },
+
     # Generic USB adapters
     { bus-type = "usb", no-features = [ msbc-alt1-rtl ] },
 
diff --git a/spa/plugins/bluez5/bluez5-dbus.c b/spa/plugins/bluez5/bluez5-dbus.c
index f4b384547..22d971c37 100644
--- a/spa/plugins/bluez5/bluez5-dbus.c
+++ b/spa/plugins/bluez5/bluez5-dbus.c
@@ -188,9 +188,16 @@ struct spa_bt_metadata {
 	uint8_t value[METADATA_MAX_LEN - 1];
 };
 
+#define RTN_MAX				0x1E
+#define MAX_TRANSPORT_LATENCY_MIN	0x5
+#define MAX_TRANSPORT_LATENCY_MAX	0x0FA0
+
 struct spa_bt_bis {
 	struct spa_list link;
 	char qos_preset[255];
+	int retransmissions;
+	int rtn_manual_set;
+	int max_transport_latency;
 	int channel_allocation;
 	struct spa_list metadata_list;
 };
@@ -6192,8 +6199,11 @@ static void configure_bis(struct spa_bt_monitor *monitor,
 	struct bap_codec_qos qos;
 	struct spa_bt_metadata *metadata_entry;
 	struct spa_dict settings;
-	struct spa_dict_item setting_items[2];
+	struct spa_dict_item setting_items[4];
+	uint32_t n_items = 0;
 	char channel_allocation[64] = {0};
+	char retransmissions[3] = {0};
+	char max_transport_latency[5] = {0};
 
 	int mse = 0;
 	int options = 0;
@@ -6218,12 +6228,27 @@ static void configure_bis(struct spa_bt_monitor *monitor,
 		metadata_size += metadata_entry->length - 1;
 	}
 
+
 	spa_log_debug(monitor->log, "bis->channel_allocation %d", bis->channel_allocation);
-	if (bis->channel_allocation)
+	if (bis->channel_allocation) {
 		spa_scnprintf(channel_allocation, sizeof(channel_allocation), "%"PRIu32, bis->channel_allocation);
-	setting_items[0] = SPA_DICT_ITEM_INIT("channel_allocation", channel_allocation);
-	setting_items[1] = SPA_DICT_ITEM_INIT("preset", bis->qos_preset);
-	settings = SPA_DICT_INIT(setting_items, 2);
+	}
+	spa_log_debug(monitor->log, "bis->rtn_manual_set %d", bis->rtn_manual_set);
+	spa_log_debug(monitor->log, "bis->retransmissions %d", bis->retransmissions);
+	if (bis->rtn_manual_set) {
+		spa_scnprintf(retransmissions, sizeof(retransmissions), "%"PRIu8, bis->retransmissions);
+		setting_items[n_items++] = SPA_DICT_ITEM_INIT("retransmissions", retransmissions);
+	}
+	spa_log_debug(monitor->log, "bis->max_transport_latency %d", bis->max_transport_latency);
+	if (bis->max_transport_latency) {
+		spa_scnprintf(max_transport_latency, sizeof(max_transport_latency), "%"PRIu32, bis->max_transport_latency);
+		setting_items[n_items++] = SPA_DICT_ITEM_INIT("max_transport_latency", max_transport_latency);
+	}
+
+	setting_items[n_items++] = SPA_DICT_ITEM_INIT("preset", bis->qos_preset);
+	setting_items[n_items++] = SPA_DICT_ITEM_INIT("channel_allocation", channel_allocation);
+
+	settings = SPA_DICT_INIT(setting_items, n_items);
 
 	caps_size = sizeof(caps);
 	ret = codec->get_bis_config(codec, caps, &caps_size, &settings, &qos);
@@ -7126,6 +7151,20 @@ static void parse_broadcast_source_config(struct spa_bt_monitor *monitor, const
 							if (spa_json_get_string(&it[1], bis_entry->qos_preset, sizeof(bis_entry->qos_preset)) <= 0)
 								goto parse_failed;
 							spa_log_debug(monitor->log, "bis_entry->qos_preset %s", bis_entry->qos_preset);
+						} else if (spa_streq(bis_key, "retransmissions")) {
+							if (spa_json_get_int(&it[2], &bis_entry->retransmissions) <= 0)
+								goto parse_failed;
+							if (bis_entry->retransmissions > RTN_MAX)
+								goto parse_failed;
+							bis_entry->rtn_manual_set = 1;
+							spa_log_debug(monitor->log, "bis_entry->retransmissions %d", bis_entry->retransmissions);
+						} else if (spa_streq(bis_key, "max_transport_latency")) {
+							if (spa_json_get_int(&it[2], &bis_entry->max_transport_latency) <= 0)
+								goto parse_failed;
+							if (bis_entry->max_transport_latency < MAX_TRANSPORT_LATENCY_MIN &&
+								bis_entry->max_transport_latency > MAX_TRANSPORT_LATENCY_MAX)
+								goto parse_failed;
+							spa_log_debug(monitor->log, "bis_entry->max_transport_latency %d", bis_entry->max_transport_latency);
 						} else if (spa_streq(bis_key, "audio_channel_allocation")) {
 							if (spa_json_get_int(&it[1], &bis_entry->channel_allocation) <= 0)
 								goto parse_failed;
diff --git a/spa/plugins/bluez5/defs.h b/spa/plugins/bluez5/defs.h
index 24a85a5c9..5e69bb757 100644
--- a/spa/plugins/bluez5/defs.h
+++ b/spa/plugins/bluez5/defs.h
@@ -811,6 +811,7 @@ enum spa_bt_feature {
 	SPA_BT_FEATURE_SBC_XQ		= (1 << 5),
 	SPA_BT_FEATURE_FASTSTREAM	= (1 << 6),
 	SPA_BT_FEATURE_A2DP_DUPLEX	= (1 << 7),
+	SPA_BT_FEATURE_LC3_A127		= (1 << 8),
 };
 
 struct spa_bt_quirks;
diff --git a/spa/plugins/bluez5/iso-io.c b/spa/plugins/bluez5/iso-io.c
index 2cc65a2bf..ce1fd7d0c 100644
--- a/spa/plugins/bluez5/iso-io.c
+++ b/spa/plugins/bluez5/iso-io.c
@@ -411,7 +411,7 @@ static void group_on_timeout(struct spa_source *source)
 	/* Ensure controller fill level */
 	fill_count = UINT_MAX;
 	spa_list_for_each(stream, &group->streams, link) {
-		if (!stream->sink || !group->started)
+		if (!stream->sink || !group->started || !stream->tx_latency.enabled)
 			continue;
 		if (stream->tx_latency.queue < MIN_FILL)
 			fill_count = SPA_MIN(fill_count, MIN_FILL - stream->tx_latency.queue);
diff --git a/spa/plugins/bluez5/quirks.c b/spa/plugins/bluez5/quirks.c
index c4b293e68..23bcec0d4 100644
--- a/spa/plugins/bluez5/quirks.c
+++ b/spa/plugins/bluez5/quirks.c
@@ -52,6 +52,7 @@ struct spa_bt_quirks {
 	int force_sbc_xq;
 	int force_faststream;
 	int force_a2dp_duplex;
+	int force_lc3_a127;
 
 	char *device_rules;
 	char *adapter_rules;
@@ -69,6 +70,7 @@ static enum spa_bt_feature parse_feature(const char *str)
 		{ "sbc-xq", SPA_BT_FEATURE_SBC_XQ },
 		{ "faststream", SPA_BT_FEATURE_FASTSTREAM },
 		{ "a2dp-duplex", SPA_BT_FEATURE_A2DP_DUPLEX },
+		{ "lc3-a127", SPA_BT_FEATURE_LC3_A127 },
 	};
 	SPA_FOR_EACH_ELEMENT_VAR(feature_keys, f) {
 		if (spa_streq(str, f->key))
@@ -228,6 +230,7 @@ struct spa_bt_quirks *spa_bt_quirks_create(const struct spa_dict *info, struct s
 	this->force_hw_volume = parse_force_flag(info, "bluez5.enable-hw-volume");
 	this->force_faststream = parse_force_flag(info, "bluez5.enable-faststream");
 	this->force_a2dp_duplex = parse_force_flag(info, "bluez5.enable-a2dp-duplex");
+	this->force_lc3_a127 = parse_force_flag(info, "bluez5.enable-lc3-a127");
 
 	if ((str = spa_dict_lookup(info, "bluez5.hardware-database")) != NULL) {
 		spa_log_debug(this->log, "loading session manager provided data");
@@ -385,6 +388,9 @@ static int get_features(const struct spa_bt_quirks *this,
 	if (this->force_a2dp_duplex != -1)
 		SPA_FLAG_UPDATE(*features, SPA_BT_FEATURE_A2DP_DUPLEX, this->force_a2dp_duplex);
 
+	if (this->force_lc3_a127 != -1)
+		SPA_FLAG_UPDATE(*features, SPA_BT_FEATURE_LC3_A127, this->force_lc3_a127);
+
 	return 0;
 }