+------------+        +--------------+
               | Delay calc |        | Conditional  |
            +--| for packet >--->>---| Delay Buffer >--+
            |  +------------+        +--------------+  |  
            |                                          |        
     +------^--------+                                 |
->>--| POF selector  >---------------------------------+-->>----  
     | (Flow ident.) |
     +---------------+

->>- packet flow