diff --git a/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/ZigBeeNetworkManager.java b/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/ZigBeeNetworkManager.java
index bd6cffe01..e6f90e251 100644
--- a/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/ZigBeeNetworkManager.java
+++ b/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/ZigBeeNetworkManager.java
@@ -597,6 +597,15 @@ public ZigBeeKey getZigBeeNetworkKey() {
         return transport.getZigBeeNetworkKey();
     }
 
+    /**
+     * Gets the {@link ApdDataEntity} in use by the network manager. This allows configuration of the APSDE.
+     *
+     * @return the {@link ApdDataEntity} in use by the network manager.
+     */
+    public ApsDataEntity getApsDataEntity() {
+        return apsDataEntity;
+    }
+
     /**
      * Set the current link key in use by the system.
      * <p>
diff --git a/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/aps/ApsDataEntity.java b/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/aps/ApsDataEntity.java
index 69669523a..c7758c1f7 100644
--- a/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/aps/ApsDataEntity.java
+++ b/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/aps/ApsDataEntity.java
@@ -43,7 +43,7 @@
  *
  */
 public class ApsDataEntity {
-    private static final long DUPLICATE_TIME_WINDOW = 5000;
+    private static final long DUPLICATE_TIME_WINDOW = 15000;
 
     private static final int FRAGMENTATION_LENGTH = 78;
     private static final int FRAGMENTATION_WINDOW = 1;