+-------+            +-------+
               |Fixed  |            |Mobile |
               |Network|            |Network|
               +---+---+            +---+---+     
                   |                    |     Service Providers 
       ............|....................|.......................
                   +---------++---------+     Home Network    
                             ||                   
                          +--++-+ 
                          | CPE | 
                          +-----+ 
                                ... (Internal Network)