Network
   Resource          CPE Router      Access Network      __________
+-------------+   +--------------+   +-------------+    /          \
|             |   |              |   |             |    | Internet |
| DOTS Client +---+ DOTS Gateway +---+ DOTS Server +----+          |
|             |   |              |   |             |    |          |
+-------------+   +--------------+   +-------------+    \__________/