+----------------------+
|     Application      |
+----------------------+
           ^
           |(6) ADUs
           |
+----------------------+                           +----------------+
|    FEC Framework     |                           |   FEC Scheme   |
|                      |<--------------------------|                |
|(2)Extract FEC Payload|(5) ADUs                   |(4) FEC Decoding|
|   IDs and pass IDs & |-------------------------->|                |
|   payloads to FEC    |(3) Explicit Source FEC    +----------------+
|   scheme             |            Payload IDs
+----------------------+    Repair FEC Payload IDs
           ^                Source payloads       
           |                Repair payloads
           |(1) FEC Source
           |    and Repair Packets
+----------------------+ 
|  Transport Protocol  |
+----------------------+