diff --git a/src/classic/hfp_hf.c b/src/classic/hfp_hf.c
index 10e4aa3ee..e8150248d 100644
--- a/src/classic/hfp_hf.c
+++ b/src/classic/hfp_hf.c
@@ -1679,3 +1679,11 @@ void hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, i
     }
 }
 
+int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){
+    hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle);
+    if (!hfp_connection) {
+        log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle);
+        return 0;
+    }
+    return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE);
+}
diff --git a/src/classic/hfp_hf.h b/src/classic/hfp_hf.h
index 7ad2076c1..7dc39cb16 100644
--- a/src/classic/hfp_hf.h
+++ b/src/classic/hfp_hf.h
@@ -416,10 +416,16 @@ void hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle);
  */
 void hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value);
 
+/*
+ * @brief Tests if in-band ringtone is active on AG (requires SLC)
+ * @aram acl_handler of the AG
+ */
+int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle);
+
 /* API_END */
 
 #if defined __cplusplus
 }
 #endif
 
-#endif // __BTSTACK_HFP_HF_H
\ No newline at end of file
+#endif // __BTSTACK_HFP_HF_H