diff --git a/CHANGELOG.md b/CHANGELOG.md
index 428a1d0e..f4337a8b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 * Add user access to the `smtc_modem_factory_reset` function.
 * Add support for 2.4 Ghz multicast class C session frequency setting.
 
+### Changed
+
+* Starting join bank can be set over SMTC modem API for regions that support this (AU915, US915)
+* Subsequent join attempts cycle through all banks for regions that support this (AU915, US915)
+
 ## [v4.8.0] 2024-12-20
 
 This version is based on feature branch v4.5.0 of the LoRa Basics Modem.
diff --git a/lbm_lib/smtc_modem_api/smtc_modem_api.h b/lbm_lib/smtc_modem_api/smtc_modem_api.h
index bd131915..b016f5cf 100755
--- a/lbm_lib/smtc_modem_api/smtc_modem_api.h
+++ b/lbm_lib/smtc_modem_api/smtc_modem_api.h
@@ -1289,6 +1289,31 @@ smtc_modem_return_code_t smtc_modem_set_adr_ack_limit_delay( uint8_t stack_id, u
 smtc_modem_return_code_t smtc_modem_get_adr_ack_limit_delay( uint8_t stack_id, uint8_t* adr_ack_limit,
                                                              uint8_t* adr_ack_delay );
 
+/**
+ * @brief Set the starting bank for join channel cycling
+ *
+ * @remark Join attempts cycle through banks sequentially,
+ *         picking one random channel per bank on each attempt. This
+ *         setting controls which bank the cycle starts from or join failure
+ *         reset occurs. It also sets number of banks supported for used
+ *         region. Only applicable to regions that use channel banks to
+ *         choose next channel for join request (AU915, US915).
+ *         Returns SMTC_MODEM_RC_INVALID for other regions or invalid bank.
+ *         Default is 0 (LoRaWAN spec default).
+ *
+ * @param [in] stack_id   Stack identifier
+ * @param [in] start_bank Starting bank index
+ * @param [in] p_bank_count Pointer to set value of number of banks supported
+ *
+ * @return Modem return code as defined in @ref smtc_modem_return_code_t
+ * @retval SMTC_MODEM_RC_OK                Command executed without errors
+ * @retval SMTC_MODEM_RC_INVALID           Invalid bank or unsupported region
+ * @retval SMTC_MODEM_RC_BUSY              Modem is currently in test mode
+ * @retval SMTC_MODEM_RC_INVALID_STACK_ID  Invalid \p stack_id
+ */
+smtc_modem_return_code_t smtc_modem_set_join_start_bank( uint8_t stack_id,
+                                                         uint8_t start_bank,
+                                                         uint8_t* p_bank_count);
 /*
  * -----------------------------------------------------------------------------
  * ----------- BOARD MANAGEMENT MODEM FUNCTIONS --------------------------------
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.c b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.c
index 648b05f1..a2b9c02c 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.c
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.c
@@ -166,7 +166,7 @@ void region_au_915_init( smtc_real_t* real )
     memset( &unwrapped_channel_mask[0], 0xFF, BANK_MAX_AU915 );
     memset( &snapshot_channel_tx_mask[0], 0xFF, BANK_MAX_AU915 );
 
-    snapshot_bank_tx_mask = 0;
+    snapshot_bank_tx_mask = real_ctx.join_start_bank_tx_mask;
 }
 
 void region_au_915_config( smtc_real_t* real )
@@ -453,7 +453,12 @@ void region_au_915_set_channel_mask( smtc_real_t* real )
 void region_au_915_init_join_snapshot_channel_mask( smtc_real_t* real )
 {
     memset( snapshot_channel_tx_mask, 0xFF, BANK_MAX_AU915 );
-    snapshot_bank_tx_mask = 0;
+    snapshot_bank_tx_mask = real_ctx.join_start_bank_tx_mask;
+}
+
+void region_au_915_init_join_snapshot_bank_tx_mask( smtc_real_t* real )
+{
+    snapshot_bank_tx_mask = real_ctx.join_start_bank_tx_mask;
 }
 
 void region_au_915_init_after_join_snapshot_channel_mask( smtc_real_t* real, uint8_t tx_data_rate,
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.h b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.h
index 4b68f02b..7646b1c5 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.h
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_au_915.h
@@ -122,6 +122,13 @@ void region_au_915_set_channel_mask( smtc_real_t* real );
  * \param [OUT] return
  */
 void region_au_915_init_join_snapshot_channel_mask( smtc_real_t* real );
+/**
+ * \brief
+ * \remark
+ * \param [IN]  none
+ * \param [OUT] return
+ */
+void region_au_915_init_join_snapshot_bank_tx_mask( smtc_real_t* real );
 /**
  * \brief
  * \remark
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.c b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.c
index 8d1bfb4d..87112f83 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.c
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.c
@@ -164,7 +164,7 @@ void region_us_915_init( smtc_real_t* real )
     memset( &unwrapped_channel_mask[0], 0xFF, BANK_MAX_US915 );
     memset( &snapshot_channel_tx_mask[0], 0xFF, BANK_MAX_US915 );
 
-    snapshot_bank_tx_mask = 0;
+    snapshot_bank_tx_mask = real_ctx.join_start_bank_tx_mask;
 }
 
 void region_us_915_config( smtc_real_t* real )
@@ -450,7 +450,12 @@ void region_us_915_set_channel_mask( smtc_real_t* real )
 void region_us_915_init_join_snapshot_channel_mask( smtc_real_t* real )
 {
     memset( snapshot_channel_tx_mask, 0xFF, BANK_MAX_US915 );
-    snapshot_bank_tx_mask = 0;
+    snapshot_bank_tx_mask = real_ctx.join_start_bank_tx_mask;
+}
+
+void region_us_915_init_join_snapshot_bank_tx_mask( smtc_real_t* real )
+{
+    snapshot_bank_tx_mask = real_ctx.join_start_bank_tx_mask;
 }
 
 void region_us_915_init_after_join_snapshot_channel_mask( smtc_real_t* real, uint8_t tx_data_rate,
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.h b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.h
index ab7fe0fc..04af8aef 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.h
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/region_us_915.h
@@ -122,6 +122,13 @@ void region_us_915_set_channel_mask( smtc_real_t* real );
  * \param [OUT] return
  */
 void region_us_915_init_join_snapshot_channel_mask( smtc_real_t* real );
+/**
+ * \brief
+ * \remark
+ * \param [IN]  none
+ * \param [OUT] return
+ */
+void region_us_915_init_join_snapshot_bank_tx_mask( smtc_real_t* real );
 /**
  * \brief
  * \remark
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.c b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.c
index f2fbe59d..b8075f0a 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.c
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.c
@@ -98,6 +98,7 @@
 #define custom_dr_distribution_init_ctx real_ctx.custom_dr_distribution_init_ctx
 #define uplink_dwell_time_ctx real_ctx.uplink_dwell_time_ctx
 #define downlink_dwell_time_ctx real_ctx.downlink_dwell_time_ctx
+#define join_start_bank_tx_mask real_ctx.join_start_bank_tx_mask
 
 smtc_real_status_t smtc_real_is_supported_region( smtc_real_region_types_t region_type )
 {
@@ -206,6 +207,7 @@ void smtc_real_init( smtc_real_t* real, smtc_real_region_types_t region_type )
     }
 
     real_ctx.sync_word_ctx = real_const.const_sync_word_public;
+    join_start_bank_tx_mask = 0;
 }
 
 void smtc_real_config( smtc_real_t* real )
@@ -1020,6 +1022,65 @@ void smtc_real_init_join_snapshot_channel_mask( smtc_real_t* real )
     }
 }
 
+void smtc_real_init_join_snapshot_bank_tx_mask( smtc_real_t* real )
+{
+    switch( real->region_type )
+    {
+#if defined( REGION_WW2G4 )
+    case SMTC_REAL_REGION_WW2G4:
+#endif
+#if defined( REGION_EU_868 )
+    case SMTC_REAL_REGION_EU_868:
+#endif
+#if defined( REGION_AS_923 )
+    case SMTC_REAL_REGION_AS_923:
+    case SMTC_REAL_REGION_AS_923_GRP2:
+    case SMTC_REAL_REGION_AS_923_GRP3:
+#if defined( RP2_103 )
+    case SMTC_REAL_REGION_AS_923_GRP4:
+#endif
+#endif
+#if defined( REGION_CN_470 )
+    case SMTC_REAL_REGION_CN_470:
+#endif
+#if defined( REGION_CN_470_RP_1_0 )
+    case SMTC_REAL_REGION_CN_470_RP_1_0:
+#endif
+#if defined( REGION_IN_865 )
+    case SMTC_REAL_REGION_IN_865:
+#endif
+#if defined( REGION_KR_920 )
+    case SMTC_REAL_REGION_KR_920:
+#endif
+#if defined( REGION_RU_864 )
+    case SMTC_REAL_REGION_RU_864:
+#endif
+#if defined( REGION_WW2G4 ) || defined( REGION_EU_868 ) || defined( REGION_AS_923 ) || defined( REGION_CN_470 ) || \
+    defined( REGION_CN_470_RP_1_0 ) || defined( REGION_IN_865 ) || defined( REGION_KR_920 ) ||                     \
+    defined( REGION_RU_864 )
+    {
+        // Not used for these regions
+        break;
+    }
+#endif
+#if defined( REGION_US_915 )
+    case SMTC_REAL_REGION_US_915: {
+        region_us_915_init_join_snapshot_bank_tx_mask( real );
+        break;
+    }
+#endif
+#if defined( REGION_AU_915 )
+    case SMTC_REAL_REGION_AU_915: {
+        region_au_915_init_join_snapshot_bank_tx_mask( real );
+        break;
+    }
+#endif
+    default:
+        SMTC_MODEM_HAL_PANIC( );
+        break;
+    }
+}
+
 void smtc_real_init_after_join_snapshot_channel_mask( smtc_real_t* real, uint8_t tx_data_rate, uint32_t tx_frequency )
 {
     switch( real->region_type )
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.h b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.h
index 829ce013..ef49bf0d 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.h
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real.h
@@ -231,6 +231,14 @@ void smtc_real_init_channel_mask( smtc_real_t* real );
  */
 void smtc_real_init_join_snapshot_channel_mask( smtc_real_t* real );
 
+/**
+ * \brief
+ * \remark
+ * \param [IN]  none
+ * \param [OUT] return
+ */
+void smtc_real_init_join_snapshot_bank_tx_mask( smtc_real_t* real );
+
 /**
  * \brief
  * \remark
diff --git a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real_defs.h b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real_defs.h
index 5f497975..2be1630e 100644
--- a/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real_defs.h
+++ b/lbm_lib/smtc_modem_core/lr1mac/src/smtc_real/src/smtc_real_defs.h
@@ -236,6 +236,7 @@ typedef struct smtc_real_ctx_s
     uint8_t   sync_word_ctx;
     bool      uplink_dwell_time_ctx;
     bool      downlink_dwell_time_ctx;
+    uint8_t   join_start_bank_tx_mask;
 } smtc_real_ctx_t;
 
 typedef struct smtc_real_const_s
diff --git a/lbm_lib/smtc_modem_core/smtc_modem.c b/lbm_lib/smtc_modem_core/smtc_modem.c
index fac6a25e..3d8bfdc8 100644
--- a/lbm_lib/smtc_modem_core/smtc_modem.c
+++ b/lbm_lib/smtc_modem_core/smtc_modem.c
@@ -1404,6 +1404,45 @@ smtc_modem_return_code_t smtc_modem_get_adr_ack_limit_delay( uint8_t stack_id, u
     return SMTC_MODEM_RC_OK;
 }
 
+smtc_modem_return_code_t smtc_modem_set_join_start_bank( uint8_t stack_id,
+                                                         uint8_t start_bank,
+                                                         uint8_t* p_bank_count)
+{
+    RETURN_BUSY_IF_TEST_MODE( );
+
+    lr1_stack_mac_t* stack_mac = lorawan_api_stack_mac_get( stack_id );
+    if( stack_mac == NULL )
+    {
+        return SMTC_MODEM_RC_INVALID_STACK_ID;
+    }
+
+    /* Only regions with channel banks support this setting */
+    if( (stack_mac->real->region_type != SMTC_REAL_REGION_AU_915) &&
+        (stack_mac->real->region_type != SMTC_REAL_REGION_US_915) )
+    {
+        SMTC_MODEM_HAL_TRACE_WARNING(
+            "smtc_modem_set_join_start_bank: region does not support "
+            "channel bank cycling\n" );
+        return SMTC_MODEM_RC_INVALID;
+    }
+
+    /* Validate bank index against region's bank count */
+    if( start_bank >= stack_mac->real->real_const.const_number_of_channel_bank )
+    {
+        SMTC_MODEM_HAL_TRACE_WARNING(
+            "smtc_modem_set_join_start_bank: invalid bank %d for region, "
+            "max is %d\n", start_bank,
+            stack_mac->real->real_const.const_number_of_channel_bank - 1);
+        return SMTC_MODEM_RC_INVALID;
+    }
+
+    *p_bank_count = stack_mac->real->real_const.const_number_of_channel_bank;
+    stack_mac->real->real_ctx.join_start_bank_tx_mask = start_bank;
+    smtc_real_init_join_snapshot_bank_tx_mask(stack_mac->real);
+
+    return SMTC_MODEM_RC_OK;
+}
+
 /*
  * -----------------------------------------------------------------------------
  * ----------- BOARD MANAGEMENT MODEM FUNCTIONS --------------------------------