diff --git a/src/shared/bass.c b/src/shared/bass.c
index ce13f2c24..636eb24fd 100644
--- a/src/shared/bass.c
+++ b/src/shared/bass.c
@@ -14,13 +14,9 @@
 #include <stdbool.h>
 #include <unistd.h>
 #include <errno.h>
-#include <poll.h>
 
 #include "lib/bluetooth.h"
 #include "lib/uuid.h"
-#include "lib/iso.h"
-
-#include "btio/btio.h"
 
 #include "src/shared/queue.h"
 #include "src/shared/util.h"
@@ -29,8 +25,6 @@
 #include "src/shared/gatt-client.h"
 #include "src/shared/bass.h"
 
-#define MAX_BIS_BITMASK_IDX		31
-
 #define DBG(_bass, fmt, arg...) \
 	bass_debug(_bass, "%s:%s() " fmt, __FILE__, __func__, ## arg)
 
@@ -119,35 +113,6 @@ static struct queue *bass_db;
 static struct queue *bass_cbs;
 static struct queue *sessions;
 
-#define DEFAULT_IO_QOS \
-{ \
-	.interval	= 10000, \
-	.latency	= 10, \
-	.sdu		= 40, \
-	.phy		= 0x02, \
-	.rtn		= 2, \
-}
-
-static struct bt_iso_qos default_qos = {
-	.bcast = {
-		.big			= BT_ISO_QOS_BIG_UNSET,
-		.bis			= BT_ISO_QOS_BIS_UNSET,
-		.sync_factor		= 0x07,
-		.packing		= 0x00,
-		.framing		= 0x00,
-		.in			= DEFAULT_IO_QOS,
-		.out			= DEFAULT_IO_QOS,
-		.encryption		= 0x00,
-		.bcode			= {0x00},
-		.options		= 0x00,
-		.skip			= 0x0000,
-		.sync_timeout		= BT_ISO_SYNC_TIMEOUT,
-		.sync_cte_type		= 0x00,
-		.mse			= 0x00,
-		.timeout		= BT_ISO_SYNC_TIMEOUT,
-	}
-};
-
 struct bt_bass_src_changed {
 	unsigned int id;
 	bt_bass_src_func_t cb;
@@ -643,115 +608,6 @@ static bool bass_src_attr_match(const void *data, const void *match_data)
 	return (bcast_src->attr == attr);
 }
 
-static gboolean check_io_err(GIOChannel *io)
-{
-	struct pollfd fds;
-
-	memset(&fds, 0, sizeof(fds));
-	fds.fd = g_io_channel_unix_get_fd(io);
-	fds.events = POLLERR;
-
-	if (poll(&fds, 1, 0) > 0 && (fds.revents & POLLERR))
-		return TRUE;
-
-	return FALSE;
-}
-
-static void bass_bis_unref(void *data)
-{
-	GIOChannel *io = data;
-
-	g_io_channel_unref(io);
-}
-
-static void connect_cb(GIOChannel *io, GError *gerr,
-				gpointer user_data)
-{
-	struct bt_bcast_src *bcast_src = user_data;
-	struct iovec *notif;
-	int bis_idx;
-	int i;
-
-	/* Keep io reference */
-	g_io_channel_ref(io);
-	queue_push_tail(bcast_src->bises, io);
-
-	for (i = 0; i < bcast_src->num_subgroups; i++) {
-		struct bt_bass_subgroup_data *data =
-				&bcast_src->subgroup_data[i];
-
-		for (bis_idx = 0; bis_idx < MAX_BIS_BITMASK_IDX; bis_idx++) {
-			if (data->pending_bis_sync & (1 << bis_idx)) {
-				data->bis_sync |= (1 << bis_idx);
-				data->pending_bis_sync &= ~(1 << bis_idx);
-				break;
-			}
-		}
-
-		if (bis_idx < MAX_BIS_BITMASK_IDX)
-			break;
-	}
-
-	for (i = 0; i < bcast_src->num_subgroups; i++) {
-		if (bcast_src->subgroup_data[i].pending_bis_sync)
-			break;
-	}
-
-	/* If there are still pending bises, wait for their
-	 * notifications also before sending notification to
-	 * client
-	 */
-	if (i != bcast_src->num_subgroups)
-		return;
-
-	/* All connections have been notified */
-	if (check_io_err(io)) {
-		DBG(bcast_src->bass, "BIG sync failed");
-
-		/* Close all connected bises */
-		queue_destroy(bcast_src->bises, bass_bis_unref);
-		bcast_src->bises = NULL;
-
-		/* Close listen io */
-		g_io_channel_shutdown(bcast_src->listen_io, TRUE, NULL);
-		g_io_channel_unref(bcast_src->listen_io);
-		bcast_src->listen_io = NULL;
-
-		/* Close pa sync io */
-		if (bcast_src->pa_sync_io) {
-			g_io_channel_shutdown(bcast_src->pa_sync_io,
-					TRUE, NULL);
-			g_io_channel_unref(bcast_src->pa_sync_io);
-			bcast_src->pa_sync_io = NULL;
-		}
-
-		for (i = 0; i < bcast_src->num_subgroups; i++)
-			bcast_src->subgroup_data[i].bis_sync =
-				BT_BASS_BIG_SYNC_FAILED_BITMASK;
-
-		/* If BIG sync failed because of an incorrect broadcast code,
-		 * inform client
-		 */
-		if (bcast_src->enc == BT_BASS_BIG_ENC_STATE_BCODE_REQ)
-			bcast_src->enc = BT_BASS_BIG_ENC_STATE_BAD_CODE;
-	} else {
-		if (bcast_src->enc == BT_BASS_BIG_ENC_STATE_BCODE_REQ)
-			bcast_src->enc = BT_BASS_BIG_ENC_STATE_DEC;
-	}
-
-	/* Send notification to client */
-	notif = bass_parse_bcast_src(bcast_src);
-	if (!notif)
-		return;
-
-	gatt_db_attribute_notify(bcast_src->attr,
-					notif->iov_base, notif->iov_len,
-					bt_bass_get_att(bcast_src->bass));
-
-	free(notif->iov_base);
-	free(notif);
-}
-
 static bool bass_trigger_big_sync(struct bt_bcast_src *bcast_src)
 {
 	for (int i = 0; i < bcast_src->num_subgroups; i++) {
@@ -766,73 +622,6 @@ static bool bass_trigger_big_sync(struct bt_bcast_src *bcast_src)
 	return false;
 }
 
-
-static void confirm_cb(GIOChannel *io, gpointer user_data)
-{
-	struct bt_bcast_src *bcast_src = user_data;
-	int sk, err;
-	socklen_t len;
-	struct bt_iso_qos qos;
-	struct iovec *notif;
-	GError *gerr = NULL;
-
-	if (check_io_err(io)) {
-		DBG(bcast_src->bass, "PA sync failed");
-
-		/* Mark PA sync as failed and notify client */
-		bcast_src->sync_state = BT_BASS_FAILED_TO_SYNCHRONIZE_TO_PA;
-		goto notify;
-	}
-
-	bcast_src->sync_state = BT_BASS_SYNCHRONIZED_TO_PA;
-	bcast_src->pa_sync_io = io;
-	g_io_channel_ref(bcast_src->pa_sync_io);
-
-	len = sizeof(qos);
-	memset(&qos, 0, len);
-
-	sk = g_io_channel_unix_get_fd(io);
-
-	err = getsockopt(sk, SOL_BLUETOOTH, BT_ISO_QOS, &qos, &len);
-	if (err < 0) {
-		DBG(bcast_src->bass, "Failed to get iso qos");
-		return;
-	}
-
-	if (!qos.bcast.encryption) {
-		/* BIG is not encrypted. Try to synchronize */
-		bcast_src->enc = BT_BASS_BIG_ENC_STATE_NO_ENC;
-
-		if (bass_trigger_big_sync(bcast_src)) {
-			if (!bt_io_bcast_accept(bcast_src->pa_sync_io,
-				connect_cb, bcast_src, NULL, &gerr,
-				BT_IO_OPT_INVALID)) {
-				DBG(bcast_src->bass, "bt_io_bcast_accept: %s",
-				gerr->message);
-				g_error_free(gerr);
-			}
-			return;
-		}
-
-		goto notify;
-	}
-
-	/* BIG is encrypted. Wait for Client to provide the Broadcast_Code */
-	bcast_src->enc = BT_BASS_BIG_ENC_STATE_BCODE_REQ;
-
-notify:
-	notif = bass_parse_bcast_src(bcast_src);
-	if (!notif)
-		return;
-
-	gatt_db_attribute_notify(bcast_src->attr,
-					notif->iov_base, notif->iov_len,
-					bt_bass_get_att(bcast_src->bass));
-
-	free(notif->iov_base);
-	free(notif);
-}
-
 static struct bt_bass *bass_get_session(struct bt_att *att, struct gatt_db *db,
 		const bdaddr_t *adapter_bdaddr)
 {
@@ -919,13 +708,7 @@ static void bass_handle_add_src_op(struct bt_bass *bass,
 	uint8_t src_id = 0;
 	struct gatt_db_attribute *attr;
 	uint8_t pa_sync;
-	GIOChannel *io;
-	GError *err = NULL;
-	struct bt_iso_qos iso_qos = default_qos;
-	uint8_t num_bis = 0;
-	uint8_t bis[ISO_MAX_NUM_BIS];
 	struct iovec *notif;
-	uint8_t addr_type;
 
 	gatt_db_attribute_write_result(attrib, id, 0x00);
 
@@ -942,8 +725,6 @@ static void bass_handle_add_src_op(struct bt_bass *bass,
 
 	queue_push_tail(bass->ldb->bcast_srcs, bcast_src);
 
-	memset(bis, 0, ISO_MAX_NUM_BIS);
-
 	bcast_src->bass = bass;
 
 	/* Map the source to a Broadcast Receive State characteristic */
@@ -1025,18 +806,6 @@ static void bass_handle_add_src_op(struct bt_bass *bass,
 
 		util_iov_pull_le32(iov, &data->pending_bis_sync);
 
-		if (data->pending_bis_sync != BIS_SYNC_NO_PREF)
-			/* Iterate through the bis sync bitmask written
-			 * by the client and store the bis indexes that
-			 * the BASS server will try to synchronize to
-			 */
-			for (int bis_idx = 0; bis_idx < 31; bis_idx++) {
-				if (data->pending_bis_sync & (1 << bis_idx)) {
-					bis[num_bis] = bis_idx + 1;
-					num_bis++;
-				}
-			}
-
 		data->meta_len = *(uint8_t *)util_iov_pull_mem(iov,
 						sizeof(data->meta_len));
 		if (!data->meta_len)
@@ -1051,38 +820,7 @@ static void bass_handle_add_src_op(struct bt_bass *bass,
 	}
 
 	if (pa_sync != PA_SYNC_NO_SYNC) {
-		/* Convert to three-value type */
-		if (bcast_src->addr_type)
-			addr_type = BDADDR_LE_RANDOM;
-		else
-			addr_type = BDADDR_LE_PUBLIC;
-
-		/* If requested by client, try to synchronize to the source */
-		io = bt_io_listen(NULL, confirm_cb, bcast_src, NULL, &err,
-					BT_IO_OPT_SOURCE_BDADDR,
-					&bass->ldb->adapter_bdaddr,
-					BT_IO_OPT_DEST_BDADDR,
-					&bcast_src->addr,
-					BT_IO_OPT_DEST_TYPE,
-					addr_type,
-					BT_IO_OPT_MODE, BT_IO_MODE_ISO,
-					BT_IO_OPT_QOS, &iso_qos,
-					BT_IO_OPT_ISO_BC_SID, bcast_src->sid,
-					BT_IO_OPT_ISO_BC_NUM_BIS, num_bis,
-					BT_IO_OPT_ISO_BC_BIS, bis,
-					BT_IO_OPT_INVALID);
-
-		if (!io) {
-			DBG(bass, "%s", err->message);
-			g_error_free(err);
-			goto err;
-		}
-
-		bcast_src->listen_io = io;
-		g_io_channel_ref(bcast_src->listen_io);
-
-		if (num_bis > 0 && !bcast_src->bises)
-			bcast_src->bises = queue_new();
+		/* TODO: call BASS plugin callback to establish PA/BIG sync */
 	} else {
 		for (int i = 0; i < bcast_src->num_subgroups; i++)
 			bcast_src->subgroup_data[i].bis_sync =
@@ -1122,10 +860,6 @@ static void bass_handle_set_bcast_code_op(struct bt_bass *bass,
 {
 	struct bt_bass_set_bcast_code_params *params;
 	struct bt_bcast_src *bcast_src;
-	int sk, err;
-	socklen_t len;
-	struct bt_iso_qos qos;
-	GError *gerr = NULL;
 	struct iovec *notif;
 
 	/* Get Set Broadcast Code command parameters */
@@ -1161,37 +895,7 @@ static void bass_handle_set_bcast_code_op(struct bt_bass *bass,
 		return;
 	}
 
-	/* Try to sync to the source using the
-	 * received broadcast code
-	 */
-	len = sizeof(qos);
-	memset(&qos, 0, len);
-
-	if (!bcast_src->pa_sync_io)
-		return;
-
-	sk = g_io_channel_unix_get_fd(bcast_src->pa_sync_io);
-
-	err = getsockopt(sk, SOL_BLUETOOTH, BT_ISO_QOS, &qos, &len);
-	if (err < 0) {
-		DBG(bcast_src->bass, "Failed to get iso qos");
-		return;
-	}
-
-	/* Update socket QoS with Broadcast Code */
-	memcpy(qos.bcast.bcode, params->bcast_code, BT_BASS_BCAST_CODE_SIZE);
-
-	if (setsockopt(sk, SOL_BLUETOOTH, BT_ISO_QOS, &qos,
-				sizeof(qos)) < 0) {
-		DBG(bcast_src->bass, "Failed to set iso qos");
-		return;
-	}
-
-	if (!bt_io_bcast_accept(bcast_src->pa_sync_io, connect_cb,
-		bcast_src, NULL, &gerr,  BT_IO_OPT_INVALID)) {
-		DBG(bcast_src->bass, "bt_io_bcast_accept: %s", gerr->message);
-		g_error_free(gerr);
-	}
+	/* TODO: Call BASS plugin callback to sync with required BIS */
 }
 
 #define BASS_OP(_str, _op, _size, _func) \
@@ -1375,18 +1079,6 @@ static void bass_bcast_src_free(void *data)
 
 	free(bcast_src->subgroup_data);
 
-	if (bcast_src->listen_io) {
-		g_io_channel_shutdown(bcast_src->listen_io, TRUE, NULL);
-		g_io_channel_unref(bcast_src->listen_io);
-	}
-
-	if (bcast_src->pa_sync_io) {
-		g_io_channel_shutdown(bcast_src->pa_sync_io, TRUE, NULL);
-		g_io_channel_unref(bcast_src->pa_sync_io);
-	}
-
-	queue_destroy(bcast_src->bises, bass_bis_unref);
-
 	free(bcast_src);
 }
 
